XPRSprob

java.lang.Object
- com.dashoptimization.XPRSobject
- - com.dashoptimization.XPRSprob

All Implemented Interfaces:

java.lang.AutoCloseable
```
public class XPRSprob
extends XPRSobject
```
Represents a problem and an optimizer instance.

Nested Class Summary

Modifier and Type	Class and Description
`static class`	`XPRSprob.AttributeInfo` Attribute descriptor for `getAttribInfo(String)`.
`class`	`XPRSprob.Attributes` Class to access attributes.
`static class`	`XPRSprob.BasisValue` Return value for `getBasisVal(int, int)`.
`static class`	`XPRSprob.ControlInfo` Control descriptor for `getControlInfo(String)`.
`class`	`XPRSprob.Controls` Class to access controls.
`static class`	`XPRSprob.GeneralConstraintInfo` Return value for `getGenCons(int, int)`.
`static class`	`XPRSprob.GlobalInfo` Return value for `getGlobal()`, `getGlobalEntities()`, `getGlobalSets()`.
`static class`	`XPRSprob.IISData` Return value for `getIISData(int)`;
`static class`	`XPRSprob.IISInfo` Return value for `getiis()`.
`static class`	`XPRSprob.IISStatusInfo` Return value for `IISStatus()`.
`static class`	`XPRSprob.InfeasInfo` Return value for `getInfeas()` and `getScaledInfeas()`.
`static class`	`XPRSprob.MatrixInfo` Return value for `getCols(int, int)`, `getRows(int, int)`, `getMQObj(int, int)`.
`static class`	`XPRSprob.MatrixTriplets` Matrix specified by a list of triplets.
`static class`	`XPRSprob.PWLInfo` Return value for `getPwlCons(int, int)`.
`static class`	`XPRSprob.RowInfo` Sparse row information.
`static class`	`XPRSprob.Solution` Solution data.
`static class`	`XPRSprob.SolVal` Return value for `getLpSolVal(int, int)`, `getMipSolVal(int, int)`.
`static class`	`XPRSprob.StatusSolution` Solution information that also contains a status value.

Constructor Summary

Constructor and Description

XPRSprob()
Creates a new, empty problem.

Method Summary

Modifier and Type	Method and Description
`void`	`addBarIterationListener(XPRSbarIterationListener listener)` Add a listener for the BarIteration callback.
`void`	`addBarIterationListener(XPRSbarIterationListener listener, int priority)` Add a listener for the BarIteration callback.
`void`	`addBarIterationListener(XPRSbarIterationListener listener, java.lang.Object data)` Add a listener for the BarIteration callback.
`void`	`addBarIterationListener(XPRSbarIterationListener listener, java.lang.Object data, int priority)` Add a listener for the BarIteration callback.
`void`	`addBarLogListener(XPRSbarLogListener listener)` Add a listener for the BarLog callback.
`void`	`addBarLogListener(XPRSbarLogListener listener, int priority)` Add a listener for the BarLog callback.
`void`	`addBarLogListener(XPRSbarLogListener listener, java.lang.Object data)` Add a listener for the BarLog callback.
`void`	`addBarLogListener(XPRSbarLogListener listener, java.lang.Object data, int priority)` Add a listener for the BarLog callback.
`void`	`addBeforeSolveListener(XPRSbeforeSolveListener listener)` Add a listener for the BeforeSolve callback.
`void`	`addBeforeSolveListener(XPRSbeforeSolveListener listener, int priority)` Add a listener for the BeforeSolve callback.
`void`	`addBeforeSolveListener(XPRSbeforeSolveListener listener, java.lang.Object data)` Add a listener for the BeforeSolve callback.
`void`	`addBeforeSolveListener(XPRSbeforeSolveListener listener, java.lang.Object data, int priority)` Add a listener for the BeforeSolve callback.
`void`	`addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener)` Add a listener for the ChangeBranchObject callback.
`void`	`addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener, int priority)` Add a listener for the ChangeBranchObject callback.
`void`	`addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener, java.lang.Object data)` Add a listener for the ChangeBranchObject callback.
`void`	`addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener, java.lang.Object data, int priority)` Add a listener for the ChangeBranchObject callback.
`void`	`addCheckTimeListener(XPRScheckTimeListener listener)` Add a listener for the CheckTime callback.
`void`	`addCheckTimeListener(XPRScheckTimeListener listener, int priority)` Add a listener for the CheckTime callback.
`void`	`addCheckTimeListener(XPRScheckTimeListener listener, java.lang.Object data)` Add a listener for the CheckTime callback.
`void`	`addCheckTimeListener(XPRScheckTimeListener listener, java.lang.Object data, int priority)` Add a listener for the CheckTime callback.
`void`	`addChgBranchListener(XPRSchgBranchListener listener)` Add a listener for the ChgBranch callback.
`void`	`addChgBranchListener(XPRSchgBranchListener listener, int priority)` Add a listener for the ChgBranch callback.
`void`	`addChgBranchListener(XPRSchgBranchListener listener, java.lang.Object data)` Add a listener for the ChgBranch callback.
`void`	`addChgBranchListener(XPRSchgBranchListener listener, java.lang.Object data, int priority)` Add a listener for the ChgBranch callback.
`void`	`addChgNodeListener(XPRSchgNodeListener listener)` Add a listener for the ChgNode callback.
`void`	`addChgNodeListener(XPRSchgNodeListener listener, int priority)` Add a listener for the ChgNode callback.
`void`	`addChgNodeListener(XPRSchgNodeListener listener, java.lang.Object data)` Add a listener for the ChgNode callback.
`void`	`addChgNodeListener(XPRSchgNodeListener listener, java.lang.Object data, int priority)` Add a listener for the ChgNode callback.
`int`	`addCol(double obj, double lb, double ub)` Add a single column to this problem.
`int`	`addCol(double obj, double lb, double ub, char type)` Add a single column to this problem.
`int`	`addCol(double obj, double lb, double ub, char type, int[] rowind, double[] rowval)` Add a single column to this problem.
`int`	`addCol(double obj, double lb, double ub, char type, int[] rowind, double[] rowval, java.lang.String name)` Add a single column to the model.
`int`	`addCol(double obj, double lb, double ub, char type, java.lang.String name)` Add a single column to this problem.
`int`	`addCol(double obj, double lb, double ub, java.lang.String name)` Add a single column to this problem.
`void`	`addCols(int ncols, int ncoefs, double[] objcoef, int[] start, int[] rowind, double[] rowcoef, double[] lb, double[] ub)` Allows columns to be added to the matrix after passing it to the Optimizer using the input routines.
`void`	`addCols(int ncols, long ncoefs, double[] objcoef, long[] start, int[] rowind, double[] rowcoef, double[] lb, double[] ub)` Allows columns to be added to the matrix after passing it to the Optimizer using the input routines.
`void`	`addComputeRestartListener(XPRScomputeRestartListener listener)` Add a listener for the ComputeRestart callback.
`void`	`addComputeRestartListener(XPRScomputeRestartListener listener, int priority)` Add a listener for the ComputeRestart callback.
`void`	`addComputeRestartListener(XPRScomputeRestartListener listener, java.lang.Object data)` Add a listener for the ComputeRestart callback.
`void`	`addComputeRestartListener(XPRScomputeRestartListener listener, java.lang.Object data, int priority)` Add a listener for the ComputeRestart callback.
`void`	`addCut(int cuttype, int[] colind, double[] colval, char rowtype, double rhs)` Add a single cut to the problem.
`void`	`addCut(int cuttype, XPRSprob.RowInfo cut)` Add a single cut to the problem.
`void`	`addCutLogListener(XPRScutLogListener listener)` Add a listener for the CutLog callback.
`void`	`addCutLogListener(XPRScutLogListener listener, int priority)` Add a listener for the CutLog callback.
`void`	`addCutLogListener(XPRScutLogListener listener, java.lang.Object data)` Add a listener for the CutLog callback.
`void`	`addCutLogListener(XPRScutLogListener listener, java.lang.Object data, int priority)` Add a listener for the CutLog callback.
`void`	`addCutMgrListener(XPRScutMgrListener listener)` Add a listener for the CutMgr callback.
`void`	`addCutMgrListener(XPRScutMgrListener listener, int priority)` Add a listener for the CutMgr callback.
`void`	`addCutMgrListener(XPRScutMgrListener listener, java.lang.Object data)` Add a listener for the CutMgr callback.
`void`	`addCutMgrListener(XPRScutMgrListener listener, java.lang.Object data, int priority)` Add a listener for the CutMgr callback.
`void`	`addCuts(int ncuts, int[] cuttype, byte[] rowtype, double[] rhs, int[] start, int[] colind, double[] cutcoef)` Adds cuts directly to the matrix at the current node.
`void`	`addCuts(int ncuts, int[] cuttype, byte[] rowtype, double[] rhs, long[] start, int[] colind, double[] cutcoef)` Adds cuts directly to the matrix at the current node.
`void`	`addDestroyMTListener(XPRSdestroyMTListener listener)` Add a listener for the DestroyMT callback.
`void`	`addDestroyMTListener(XPRSdestroyMTListener listener, int priority)` Add a listener for the DestroyMT callback.
`void`	`addDestroyMTListener(XPRSdestroyMTListener listener, java.lang.Object data)` Add a listener for the DestroyMT callback.
`void`	`addDestroyMTListener(XPRSdestroyMTListener listener, java.lang.Object data, int priority)` Add a listener for the DestroyMT callback.
`void`	`addEstimateListener(XPRSestimateListener listener)` Add a listener for the Estimate callback.
`void`	`addEstimateListener(XPRSestimateListener listener, int priority)` Add a listener for the Estimate callback.
`void`	`addEstimateListener(XPRSestimateListener listener, java.lang.Object data)` Add a listener for the Estimate callback.
`void`	`addEstimateListener(XPRSestimateListener listener, java.lang.Object data, int priority)` Add a listener for the Estimate callback.
`void`	`addGapNotifyListener(XPRSgapNotifyListener listener)` Add a listener for the GapNotify callback.
`void`	`addGapNotifyListener(XPRSgapNotifyListener listener, int priority)` Add a listener for the GapNotify callback.
`void`	`addGapNotifyListener(XPRSgapNotifyListener listener, java.lang.Object data)` Add a listener for the GapNotify callback.
`void`	`addGapNotifyListener(XPRSgapNotifyListener listener, java.lang.Object data, int priority)` Add a listener for the GapNotify callback.
`void`	`addGenCons(int ncons, int ncols, int nvals, XPRSenumerations.GenConsType[] contype, int[] resultant, int[] colstart, int[] colind, int[] valstart, double[] val)` Adds one or more general constraints to the problem.
`void`	`addGenCons(int ncons, long ncols, long nvals, XPRSenumerations.GenConsType[] contype, int[] resultant, long[] colstart, int[] colind, long[] valstart, double[] val)` Adds one or more general constraints to the problem.
`void`	`addGlobalLogListener(XPRSglobalLogListener listener)` Add a listener for the GlobalLog callback.
`void`	`addGlobalLogListener(XPRSglobalLogListener listener, int priority)` Add a listener for the GlobalLog callback.
`void`	`addGlobalLogListener(XPRSglobalLogListener listener, java.lang.Object data)` Add a listener for the GlobalLog callback.
`void`	`addGlobalLogListener(XPRSglobalLogListener listener, java.lang.Object data, int priority)` Add a listener for the GlobalLog callback.
`void`	`addInfNodeListener(XPRSinfNodeListener listener)` Add a listener for the InfNode callback.
`void`	`addInfNodeListener(XPRSinfNodeListener listener, int priority)` Add a listener for the InfNode callback.
`void`	`addInfNodeListener(XPRSinfNodeListener listener, java.lang.Object data)` Add a listener for the InfNode callback.
`void`	`addInfNodeListener(XPRSinfNodeListener listener, java.lang.Object data, int priority)` Add a listener for the InfNode callback.
`void`	`addIntSolListener(XPRSintSolListener listener)` Add a listener for the IntSol callback.
`void`	`addIntSolListener(XPRSintSolListener listener, int priority)` Add a listener for the IntSol callback.
`void`	`addIntSolListener(XPRSintSolListener listener, java.lang.Object data)` Add a listener for the IntSol callback.
`void`	`addIntSolListener(XPRSintSolListener listener, java.lang.Object data, int priority)` Add a listener for the IntSol callback.
`void`	`addLpLogListener(XPRSlpLogListener listener)` Add a listener for the LpLog callback.
`void`	`addLpLogListener(XPRSlpLogListener listener, int priority)` Add a listener for the LpLog callback.
`void`	`addLpLogListener(XPRSlpLogListener listener, java.lang.Object data)` Add a listener for the LpLog callback.
`void`	`addLpLogListener(XPRSlpLogListener listener, java.lang.Object data, int priority)` Add a listener for the LpLog callback.
`void`	`addMessageListener(XPRSmessageListener listener)` Add a listener for the Message callback.
`void`	`addMessageListener(XPRSmessageListener listener, int priority)` Add a listener for the Message callback.
`void`	`addMessageListener(XPRSmessageListener listener, java.lang.Object data)` Add a listener for the Message callback.
`void`	`addMessageListener(XPRSmessageListener listener, java.lang.Object data, int priority)` Add a listener for the Message callback.
`void`	`addMipSol(int length, double[] solval, int[] colind, java.lang.String name)` Adds a new feasible, infeasible or partial MIP solution for the problem to the Optimizer.
`void`	`addMipThreadListener(XPRSmipThreadListener listener)` Add a listener for the MipThread callback.
`void`	`addMipThreadListener(XPRSmipThreadListener listener, int priority)` Add a listener for the MipThread callback.
`void`	`addMipThreadListener(XPRSmipThreadListener listener, java.lang.Object data)` Add a listener for the MipThread callback.
`void`	`addMipThreadListener(XPRSmipThreadListener listener, java.lang.Object data, int priority)` Add a listener for the MipThread callback.
`void`	`addMsgHandlerListener(XPRSmsgHandlerListener listener)` Add a listener for the MsgHandler callback.
`void`	`addMsgHandlerListener(XPRSmsgHandlerListener listener, int priority)` Add a listener for the MsgHandler callback.
`void`	`addMsgHandlerListener(XPRSmsgHandlerListener listener, java.lang.Object data)` Add a listener for the MsgHandler callback.
`void`	`addMsgHandlerListener(XPRSmsgHandlerListener listener, java.lang.Object data, int priority)` Add a listener for the MsgHandler callback.
`void`	`addNames(int type, java.lang.String[] _sname, int first, int last)`
`void`	`addNewnodeListener(XPRSnewnodeListener listener)` Add a listener for the Newnode callback.
`void`	`addNewnodeListener(XPRSnewnodeListener listener, int priority)` Add a listener for the Newnode callback.
`void`	`addNewnodeListener(XPRSnewnodeListener listener, java.lang.Object data)` Add a listener for the Newnode callback.
`void`	`addNewnodeListener(XPRSnewnodeListener listener, java.lang.Object data, int priority)` Add a listener for the Newnode callback.
`void`	`addNodeCutoffListener(XPRSnodeCutoffListener listener)` Add a listener for the NodeCutoff callback.
`void`	`addNodeCutoffListener(XPRSnodeCutoffListener listener, int priority)` Add a listener for the NodeCutoff callback.
`void`	`addNodeCutoffListener(XPRSnodeCutoffListener listener, java.lang.Object data)` Add a listener for the NodeCutoff callback.
`void`	`addNodeCutoffListener(XPRSnodeCutoffListener listener, java.lang.Object data, int priority)` Add a listener for the NodeCutoff callback.
`void`	`addOptNodeListener(XPRSoptNodeListener listener)` Add a listener for the OptNode callback.
`void`	`addOptNodeListener(XPRSoptNodeListener listener, int priority)` Add a listener for the OptNode callback.
`void`	`addOptNodeListener(XPRSoptNodeListener listener, java.lang.Object data)` Add a listener for the OptNode callback.
`void`	`addOptNodeListener(XPRSoptNodeListener listener, java.lang.Object data, int priority)` Add a listener for the OptNode callback.
`void`	`addPreIntsolListener(XPRSpreIntsolListener listener)` Add a listener for the PreIntsol callback.
`void`	`addPreIntsolListener(XPRSpreIntsolListener listener, int priority)` Add a listener for the PreIntsol callback.
`void`	`addPreIntsolListener(XPRSpreIntsolListener listener, java.lang.Object data)` Add a listener for the PreIntsol callback.
`void`	`addPreIntsolListener(XPRSpreIntsolListener listener, java.lang.Object data, int priority)` Add a listener for the PreIntsol callback.
`void`	`addPreNodeListener(XPRSpreNodeListener listener)` Add a listener for the PreNode callback.
`void`	`addPreNodeListener(XPRSpreNodeListener listener, int priority)` Add a listener for the PreNode callback.
`void`	`addPreNodeListener(XPRSpreNodeListener listener, java.lang.Object data)` Add a listener for the PreNode callback.
`void`	`addPreNodeListener(XPRSpreNodeListener listener, java.lang.Object data, int priority)` Add a listener for the PreNode callback.
`void`	`addPresolveListener(XPRSpresolveListener listener)` Add a listener for the Presolve callback.
`void`	`addPresolveListener(XPRSpresolveListener listener, int priority)` Add a listener for the Presolve callback.
`void`	`addPresolveListener(XPRSpresolveListener listener, java.lang.Object data)` Add a listener for the Presolve callback.
`void`	`addPresolveListener(XPRSpresolveListener listener, java.lang.Object data, int priority)` Add a listener for the Presolve callback.
`void`	`addPwlCons(int npwls, int npoints, int[] colind, int[] resultant, int[] start, double[] xval, double[] yval)` Adds one or more piecewise linear constraints to the problem.
`void`	`addPwlCons(int npwls, long npoints, int[] colind, int[] resultant, long[] start, double[] xval, double[] yval)` Adds one or more piecewise linear constraints to the problem.
`void`	`addQMatrix(int row, int ncoefs, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef)` Adds a new quadratic matrix into a row defined by triplets.
`void`	`addQMatrix(int row, long ncoefs, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef)` Adds a new quadratic matrix into a row defined by triplets.
`int`	`addRow(int[] colind, double[] colval, char rowtype, double rhs)` Add a single row to the problem.
`int`	`addRow(int[] colind, double[] colval, char rowtype, java.lang.Double rhs, java.lang.Double rng, java.lang.String name)` Add a single row to the problem.
`int`	`addRow(int[] colind, double[] colval, char rowtype, double rhs, java.lang.String name)` Add a single row to the problem.
`int`	`addRow(XPRSprob.RowInfo row)` Add a single row to the problem.
`int`	`addRow(XPRSprob.RowInfo row, java.lang.String name)` Add a single row to the problem.
`void`	`addRows(int nrows, int ncoefs, byte[] rowtype, double[] rhs, double[] rng, int[] start, int[] colind, double[] rowcoef)` Allows rows to be added to the matrix after passing it to the Optimizer using the input routines.
`void`	`addRows(int nrows, int ncoefs, byte[] rowtype, double[] rhs, int[] start, int[] colind, double[] rowcoef)` Convenience wrapper for `addRows(int, int, byte[], double[], double[], int[], int[], double[])`.
`void`	`addRows(int nrows, long ncoefs, byte[] rowtype, double[] rhs, double[] rng, long[] start, int[] colind, double[] rowcoef)` Allows rows to be added to the matrix after passing it to the Optimizer using the input routines.
`void`	`addRows(int nrows, long ncoefs, byte[] rowtype, double[] rhs, long[] start, int[] colind, double[] rowcoef)` Convenience wrapper for `addRows(int, long, byte[], double[], double[], long[], int[], double[])`.
`void`	`addSepNodeListener(XPRSsepNodeListener listener)` Add a listener for the SepNode callback.
`void`	`addSepNodeListener(XPRSsepNodeListener listener, int priority)` Add a listener for the SepNode callback.
`void`	`addSepNodeListener(XPRSsepNodeListener listener, java.lang.Object data)` Add a listener for the SepNode callback.
`void`	`addSepNodeListener(XPRSsepNodeListener listener, java.lang.Object data, int priority)` Add a listener for the SepNode callback.
`void`	`addSetNames(java.lang.String[] _sname, int first, int last)`
`void`	`addSets(int nsets, int nelems, byte[] settype, int[] start, int[] colind, double[] refval)` Allows sets to be added to the problem after passing it to the Optimizer using the input routines.
`void`	`addSets(int nsets, long nelems, byte[] settype, long[] start, int[] colind, double[] refval)` Allows sets to be added to the problem after passing it to the Optimizer using the input routines.
`void`	`addUserSolNotifyListener(XPRSuserSolNotifyListener listener)` Add a listener for the UserSolNotify callback.
`void`	`addUserSolNotifyListener(XPRSuserSolNotifyListener listener, int priority)` Add a listener for the UserSolNotify callback.
`void`	`addUserSolNotifyListener(XPRSuserSolNotifyListener listener, java.lang.Object data)` Add a listener for the UserSolNotify callback.
`void`	`addUserSolNotifyListener(XPRSuserSolNotifyListener listener, java.lang.Object data, int priority)` Add a listener for the UserSolNotify callback.
`void`	`alter(java.lang.String filename)` Alters or changes matrix elements, right hand sides and constraint senses in the current problem.
`int`	`analyzeRows(int x)` Convenience wrapper for `analyzeRows(int[], int, int)`.
`XPRSprob.Attributes`	`attributes()` Access the attributes of this instance.
`void`	`basisCondition(DoubleHolder p_cond, DoubleHolder p_scaledcond)` Deprecated.
`double`	`basisStability(int type, int norm, boolean ifscaled)` Compute basis stability.
`void`	`basisStability(int type, int norm, int scaled, DoubleHolder p_value)` Calculates various measures for the stability of the current basis, including the basis condition number.
`void`	`bndsa(int ncols, int[] colind, double[] lblower, double[] lbupper, double[] ublower, double[] ubupper)` Returns upper and lower sensitivity ranges for specified variables' lower and upper bounds.
`void`	`btran(double[] vec)` Post-multiplies a (row) vector provided by the user by the inverse of the current basis.
`double`	`calcObjective(double[] solution)` Calculate objective value for a given solution.
`void`	`calcObjective(double[] solution, DoubleHolder p_objval)` Calculates the objective value of a given solution.
`void`	`calcReducedCosts(double[] duals, double[] solution, double[] djs)` Calculates the reduced cost values for a given (row) dual solution.
`void`	`calcSlacks(double[] solution, double[] slacks)` Calculates the row slack values for a given solution.
`double`	`calcSolInfo(double[] solution, double[] dual, int property)` Calculate solution information.
`void`	`calcSolInfo(double[] solution, double[] duals, int property, DoubleHolder p_value)` Calculates the required property of a solution, like maximum infeasibility of a given primal and dual solution.
`void`	`chgBounds(int j, double lb, double ub)` Change bounds of a single variable.
`void`	`chgBounds(int nbounds, int[] colind, byte[] bndtype, double[] bndval)` Used to change the bounds on columns in the matrix.
`void`	`chgCoef(int row, int col, double coef)` Used to change a single coefficient in the matrix.
`void`	`chgColType(int x, byte value)` Convenience wrapper for `chgColType(int, int[], byte[])`.
`void`	`chgColType(int ncols, int[] colind, byte[] coltype)` Used to change the type of a column in the matrix.
`void`	`chgGlbLimit(int x, double value)` Convenience wrapper for `chgGlbLimit(int, int[], double[])`.
`void`	`chgGlbLimit(int ncols, int[] colind, double[] limit)` Used to change semi-continuous or semi-integer lower bounds, or upper limits on partial integers.
`void`	`chgLB(int j, double lb)` Change the lower bound of a single variable.
`void`	`chgMCoef(int[] _mrow, int[] _mcol, double[] _dval, int ncoeffs)` Deprecated.
`void`	`chgMCoef(int ncoefs, int[] rowind, int[] colind, double[] rowcoef)` Used to change multiple coefficients in the matrix.
`void`	`chgMCoef(long ncoefs, int[] rowind, int[] colind, double[] rowcoef)` Used to change multiple coefficients in the matrix.
`void`	`chgMQObj(int[] _mcol1, int[] _mcol2, double[] _dval, int ncols)` Deprecated.
`void`	`chgMQObj(int ncoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef)` Used to change multiple quadratic coefficients in the objective function.
`void`	`chgMQObj(long ncoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef)` Used to change multiple quadratic coefficients in the objective function.
`void`	`chgObj(int x, double value)` Convenience wrapper for `chgObj(int, int[], double[])`.
`void`	`chgObj(int ncols, int[] colind, double[] objcoef)` Used to change the objective function coefficients.
`void`	`chgObjSense(int objsense)` Deprecated. use chgObjSense(com.dashoptimization.XPRSenumerations.ObjSense) instead
`void`	`chgObjSense(XPRSenumerations.ObjSense objsense)` Changes the problem's objective function sense to minimize or maximize.
`void`	`chgQObj(int objqcol1, int objqcol2, double objqcoef)` Used to change a single quadratic coefficient in the objective function corresponding to the variable pair `(objqcol1,objqcol2)` of the Hessian matrix.
`void`	`chgQRowCoeff(int row, int rowqcol1, int rowqcol2, double rowqcoef)` Changes a single quadratic coefficient in a row.
`void`	`chgRHS(int x, double value)` Convenience wrapper for `chgRHS(int, int[], double[])`.
`void`	`chgRHS(int nrows, int[] rowind, double[] rhs)` Used to change right—hand side values of the problem.
`void`	`chgRHSrange(int x, double value)` Convenience wrapper for `chgRHSrange(int, int[], double[])`.
`void`	`chgRHSrange(int nrows, int[] rowind, double[] rng)` Used to change the range for a row of the problem matrix.
`void`	`chgRowType(int x, byte value)` Convenience wrapper for `chgRowType(int, int[], byte[])`.
`void`	`chgRowType(int nrows, int[] rowind, byte[] rowtype)` Used to change the type of a row in the matrix.
`void`	`chgUB(int j, double ub)` Change the upper bound of a single variable.
`void`	`clearIIS()` Resets the search for Irreducible Infeasible Sets (IIS).
`void`	`close()` Destroy the problem, deallocating all memory used.
`XPRSprob.Controls`	`controls()` Access the controls of this instance.
`void`	`copyCallBacks(XPRSprob src)` Copies callback functions defined for one problem to another.
`void`	`copyControls(XPRSprob src)` Copies controls defined for one problem to another.
`void`	`copyProb(XPRSprob src)` Copy another problem over this one
`XPRSbranchobject`	`createBranchObject(boolean isOriginal)` Creates a new XPRSbranchobject
`XPRSbranchobject`	`createBranchObjectFromGlobal(int icol)` Creates a new XPRSbranchobject
`int`	`crossoverLpSol()` Get the crossover LP solution status.
`void`	`crossoverLpSol(IntHolder p_status)` Provides a basic optimal solution for a given solution of an LP problem.
`void`	`delCols(int ncols, int[] colind)` Delete columns from a matrix.
`void`	`delCPCuts()` Convenience wrapper for `delCPCuts(int, int, int, XPRScut[])`.
`void`	`delCPCuts(int cuttype, int interp)` Convenience wrapper for `delCPCuts(int, int, int, XPRScut[])`.
`void`	`delCPCuts(int itype, int interp, int ncuts, long[] mcutind)` Deprecated. replaced by `delCPCuts(int,int,int,com.dashoptimization.XPRScut[])`
`void`	`delCPCuts(int cuttype, int interp, int ncuts, XPRScut[] cutind)` During the branch and bound search, cuts are stored in the cut pool to be applied at descendant nodes.
`void`	`delCPCuts(int ncuts, XPRScut[] cutind)` Convenience wrapper for `delCPCuts(int, int, int, XPRScut[])`.
`void`	`delCuts(int basis)` Convenience wrapper for `delCuts(int, int, int, double, int, XPRScut[])`.
`void`	`delCuts(int basis, int cuttype, int interp)` Convenience wrapper for `delCuts(int, int, int, double, int, XPRScut[])`.
`void`	`delCuts(int basis, int cuttype, int interp, double delta)` Convenience wrapper for `delCuts(int, int, int, double, int, XPRScut[])`.
`void`	`delCuts(int ibasis, int itype, int interp, double delta, int ncuts, long[] mcutind)` Deprecated. replaced by `delCuts(int,int,int,double,int,com.dashoptimization.XPRScut[])`
`void`	`delCuts(int basis, int cuttype, int interp, double delta, int ncuts, XPRScut[] cutind)` Deletes cuts from the matrix at the current node.
`void`	`delCuts(int basis, int ncuts, XPRScut[] cutind)` Convenience wrapper for `delCuts(int, int, int, double, int, XPRScut[])`.
`void`	`delGenCons(int ncons, int[] conind)` Delete general constraints from a problem.
`void`	`delIndicators(int first, int last)` Delete indicator constraints.
`void`	`delPwlCons(int npwls, int[] pwlind)` Delete piecewise linear constraints from a problem.
`void`	`delQMatrix(int row)` Deletes the quadratic part of a row or of the objective function.
`void`	`delRows(int nrows, int[] rowind)` Delete rows from a matrix.
`void`	`delSets(int nsets, int[] setind)` Delete sets from a problem.
`void`	`destroyProb()` Deprecated. use `close()` instead.
`void`	`dumpControls()` Displays the list of controls and their current value for those controls that have been set to a non default value.
`void`	`estimateRowDualRanges(int nrows, int[] rowind, int iterlim, double[] mindual, double[] maxdual)` Performs a dual side range sensitivity analysis, i.e.
`int`	`firstIIS(int mode)` Convenience wrapper for `firstIIS(int, IntHolder)`.
`void`	`firstIIS(int mode, IntHolder p_status)` Initiates a search for an Irreducible Infeasible Set (IIS) in an infeasible problem.
`void`	`fixGlobals(int options)` Fixes all the global entities to the values of the last found MIP solution.
`void`	`ftran(double[] vec)` Pre-multiplies a (column) vector provided by the user by the inverse of the current matrix.
`XPRSprob.AttributeInfo`	`getAttribInfo(java.lang.String name)` Get info about an attribute.
`void`	`getAttribInfo(java.lang.String name, IntHolder p_id, XPRSenumerationHolders.ParameterType p_type)` Accesses the id number and the type information of an attribute given its name.
`void`	`getBarNumStability(int[] colstab, int[] rowstab)`
`void`	`getBasis(int[] rowstat, int[] colstat)` Returns the current basis into the user's data arrays.
`XPRSprob.BasisValue`	`getBasisVal(int row, int col)` Get basis status for a column or row.
`void`	`getBasisVal(int row, int col, IntHolder p_rowstat, IntHolder p_colstat)` Returns the current basis status for a specific column or row.
`double`	`getCoef(int row, int col)` Convenience wrapper for `getCoef(int, int, DoubleHolder)`.
`void`	`getCoef(int row, int col, DoubleHolder p_coef)` Returns a single coefficient in the constraint matrix.
`int`	`getColBasisVal(int col)` Get basis status for a column.
`void`	`getCols(int[] start, int[] rowind, double[] rowcoef, int maxcoefs, IntHolder p_ncoefs, int first, int last)` Returns the nonzeros in the constraint matrix for the columns in a given range.
`int`	`getCols(int[] start, int[] rowind, double[] rowcoef, int maxcoefs, int first, int last)` Convenience wrapper for `getCols(int[], int[], double[], int, IntHolder, int, int)`.
`XPRSprob.MatrixInfo`	`getCols(int first, int last)` Get range of columns.
`long`	`getCols(long[] start, int[] rowind, double[] rowcoef, long maxcoefs, int first, int last)` Convenience wrapper for `getCols(long[], int[], double[], long, LongHolder, int, int)`.
`void`	`getCols(long[] start, int[] rowind, double[] rowcoef, long maxcoefs, LongHolder p_ncoefs, int first, int last)` Returns the nonzeros in the constraint matrix for the columns in a given range.
`void`	`getColType(byte[] coltype, int first, int last)` Returns the column types for the columns in a given range.
`byte`	`getColType(int x)` Convenience wrapper for `getColType(byte[], int, int)`.
`java.lang.String`	`getColumnName(int idx)` Get the name of a column.
`java.lang.String[]`	`getColumnNames(int first, int last)` Get names of columns.
`XPRSprob.ControlInfo`	`getControlInfo(java.lang.String name)` Get info about a control.
`void`	`getControlInfo(java.lang.String name, IntHolder p_id, XPRSenumerationHolders.ParameterType p_type)` Accesses the id number and the type information of a control given its name.
`void`	`getCPCutList(int itype, int interp, double delta, IntHolder ncuts, int maxcuts, long[] mcutind, double[] dviol)` Deprecated. replaced by `getCPCutList(int,int,double,com.dashoptimization.IntHolder,int,com.dashoptimization.XPRScut[],double[])`
`void`	`getCPCutList(int cuttype, int interp, double delta, IntHolder p_ncuts, int maxcuts, XPRScut[] cutind, double[] viol)` Returns a list of cut indices from the cut pool.
`int`	`getCPCutList(int cuttype, int interp, double delta, int maxcuts, XPRScut[] cutind, double[] viol)` Convenience wrapper for `getCPCutList(int, int, double, IntHolder, int, XPRScut[], double[])`.
`int`	`getCPCutList(int maxcuts, XPRScut[] cutind, double[] viol)` Convenience wrapper for `getCPCutList(int, int, double, IntHolder, int, XPRScut[], double[])`.
`void`	`getCPCuts(long[] mindex, int ncuts, int size, int[] mtype, byte[] qrtype, int[] mstart, int[] mcols, double[] dmatval, double[] drhs)` Deprecated. replaced by `getCPCuts(com.dashoptimization.XPRScut[],int,int,int[],byte[],int[],int[],double[],double[])`
`void`	`getCPCuts(XPRScut[] rowind, int ncuts, int maxcoefs, int[] cuttype, byte[] rowtype, int[] start, int[] colind, double[] cutcoef, double[] rhs)` Returns cuts from the cut pool.
`void`	`getCPCuts(XPRScut[] rowind, int ncuts, long maxcoefs, int[] cuttype, byte[] rowtype, long[] start, int[] colind, double[] cutcoef, double[] rhs)` Returns cuts from the cut pool.
`XPRScut[]`	`getCutList(int cuttype, int interp)` Retrieves a list of cut pointers for the cuts active at the current node.
`void`	`getCutList(int itype, int interp, IntHolder ncuts, int maxcuts, long[] mcutind)` Deprecated. replaced by `getCutList(int,int,com.dashoptimization.IntHolder,int,com.dashoptimization.XPRScut[])`
`void`	`getCutList(int cuttype, int interp, IntHolder p_ncuts, int maxcuts, XPRScut[] cutind)` Retrieves a list of cut pointers for the cuts active at the current node.
`int`	`getCutList(int cuttype, int interp, int maxcuts, XPRScut[] cutind)` Convenience wrapper for `getCutList(int, int, IntHolder, int, XPRScut[])`.
`int`	`getCutList(int maxcuts, XPRScut[] cutind)` Convenience wrapper for `getCutList(int, int, IntHolder, int, XPRScut[])`.
`void`	`getCutMap(int ncuts, XPRScut[] cutind, int[] cutmap)` Used to return in which rows a list of cuts are currently loaded into the Optimizer.
`double`	`getCutSlack(XPRScut cut)` Get slack for a cut.
`void`	`getCutSlack(XPRScut cutind, DoubleHolder p_slack)` Used to calculate the slack value of a cut with respect to the current LP relaxation solution.
`double`	`getDblAttrib(int attrib)` Convenience wrapper for `getDblAttrib(int, DoubleHolder)`.
`void`	`getDblAttrib(int attrib, DoubleHolder p_value)` Enables users to retrieve the values of various double problem attributes.
`double`	`getDblControl(int control)` Convenience wrapper for `getDblControl(int, DoubleHolder)`.
`void`	`getDblControl(int control, DoubleHolder p_value)` Retrieves the value of a given double control parameter.
`int`	`getDirs()` Convenience wrapper for `getDirs(IntHolder, int[], int[], byte[], double[], double[])`.
`int`	`getDirs(int[] indices, int[] prios, byte[] branchdirs, double[] uppseudo, double[] downpseudo)` Convenience wrapper for `getDirs(IntHolder, int[], int[], byte[], double[], double[])`.
`void`	`getDirs(IntHolder p_ndir, int[] indices, int[] prios, byte[] branchdirs, double[] uppseudo, double[] downpseudo)` Used to return the directives that have been loaded into a matrix.
`boolean`	`getDualRay(double[] ray)` Get dual ray.
`void`	`getDualRay(double[] ray, IntHolder p_hasray)` Retrieves a dual ray (dual unbounded direction) for the current problem, if the problem is found to be infeasible.
`XPRSprob.GeneralConstraintInfo`	`getGenCons(int first, int last)` Query a range of general constraints.
`void`	`getGenCons(XPRSenumerations.GenConsType[] contype, int[] resultant, int[] colstart, int[] colind, int maxcols, IntHolder p_ncols, int[] valstart, double[] val, int maxvals, IntHolder p_nvals, int first, int last)` Returns the general constraints `y = f(x1, ..., xn, c1, ..., cm)` in a given range.
`void`	`getGenCons(XPRSenumerations.GenConsType[] contype, int[] resultant, long[] colstart, int[] colind, long maxcols, LongHolder p_ncols, long[] valstart, double[] val, long maxvals, LongHolder p_nvals, int first, int last)` Returns the general constraints `y = f(x1, ..., xn, c1, ..., cm)` in a given range.
`java.lang.String`	`getGenConsName(int idx)` Get the name of a general constraint.
`java.lang.String[]`	`getGenConsNames(int first, int last)` Get names of general constraints.
`XPRSprob.GlobalInfo`	`getGlobal()` Get information about global entities and SOS.
`int`	`getGlobal(byte[] coltype, int[] colind, double[] limit)` Convenience wrapper for `getGlobal(IntHolder, IntHolder, byte[], int[], double[], byte[], int[], int[], double[])`.
`void`	`getGlobal(IntHolder p_nentities, byte[] coltype, int[] colind, double[] limit)` Convenience wrapper for `getGlobal(IntHolder, IntHolder, byte[], int[], double[], byte[], int[], int[], double[])`.
`void`	`getGlobal(IntHolder p_nentities, IntHolder p_nsets, byte[] coltype, int[] colind, double[] limit, byte[] settype, int[] start, int[] setcols, double[] refval)` Retrieves global information about a problem.
`void`	`getGlobal(IntHolder p_nentities, IntHolder p_nsets, byte[] coltype, int[] colind, double[] limit, byte[] settype, long[] start, int[] setcols, double[] refval)` Retrieves global information about a problem.
`XPRSprob.GlobalInfo`	`getGlobalEntities()` Get information about global entities.
`XPRSprob.GlobalInfo`	`getGlobalSets()` Get information about SOS.
`XPRSprob.IISInfo`	`getiis()` Query IIS.
`void`	`getiis(IntHolder p_ncols, IntHolder p_nrows)` Convenience wrapper for `getiis(IntHolder, IntHolder, int[], int[])`.
`void`	`getiis(IntHolder p_ncols, IntHolder p_nrows, int[] colind, int[] rowind)`
`XPRSprob.IISData`	`getIISData(int number)` Get information about an IIS.
`void`	`getIISData(int iis, IntHolder p_nrows, IntHolder p_ncols, int[] rowind, int[] colind, byte[] contype, byte[] bndtype, double[] duals, double[] djs, byte[] isolationrows, byte[] isolationcols)` Returns information for an Irreducible Infeasible Set: size, variables (row and column vectors) and conflicting sides of the variables, duals and reduced costs.
`int`	`getIndex(int type, java.lang.String name)` Convenience wrapper for `getIndex(int, String, IntHolder)`.
`void`	`getIndex(int type, java.lang.String name, IntHolder p_index)` Returns the index for a specified row or column name.
`void`	`getIndicators(int[] colind, int[] complement, int first, int last)` Returns the indicator constraint condition (indicator variable and complement flag) associated to the rows in a given range.
`XPRSprob.InfeasInfo`	`getInfeas()` Get infeasibilities.
`void`	`getInfeas(IntHolder p_nprimalcols, IntHolder p_nprimalrows, IntHolder p_ndualrows, IntHolder p_ndualcols, int[] x, int[] slack, int[] duals, int[] djs)` Returns a list of infeasible primal and dual variables.
`int`	`getIntAttrib(int attrib)` Convenience wrapper for `getIntAttrib(int, IntHolder)`.
`void`	`getIntAttrib(int attrib, IntHolder p_value)` Enables users to recover the values of various integer problem attributes.
`int`	`getIntControl(int control)` Convenience wrapper for `getIntControl(int, IntHolder)`.
`void`	`getIntControl(int control, IntHolder p_value)` Enables users to recover the values of various integer control parameters
`XPRSprob.StatusSolution`	`getLastBarSol()` Get a solution.
`int`	`getLastBarSol(double[] x, double[] slack, double[] duals, double[] djs)` Get the last barrier solution.
`void`	`getLastBarSol(double[] x, double[] slack, double[] duals, double[] djs, IntHolder p_status)` Used to obtain the last barrier solution values following optimization that used the barrier solver.
`double[]`	`getLastBarSolDjs()` Get the djs values of a solution.
`double[]`	`getLastBarSolDuals()` Get the duals values of a solution.
`double[]`	`getLastBarSolSlack()` Get the slack values of a solution.
`double[]`	`getLastBarSolX()` Get the x values of a solution.
`java.lang.String`	`getLastError()` Convenience wrapper for `getLastError(StringHolder)`.
`void`	`getLastError(StringHolder errmsg)` Returns the error message corresponding to the last error encountered by a library function.
`void`	`getLB(double[] lb, int first, int last)` Returns the lower bounds for the columns in a given range.
`double`	`getLB(int x)` Convenience wrapper for `getLB(double[], int, int)`.
`long`	`getLongAttrib(int attrib)` Convenience wrapper for `getLongAttrib(int, LongHolder)`.
`void`	`getLongAttrib(int attrib, LongHolder p_value)` Enables users to recover the values of various integer problem attributes.
`long`	`getLongControl(int control)` Convenience wrapper for `getLongControl(int, LongHolder)`.
`void`	`getLongControl(int control, LongHolder p_value)` Enables users to recover the values of various integer control parameters
`XPRSprob.Solution`	`getLpSol()` Get a solution.
`void`	`getLpSol(double[] x)` Convenience wrapper for `getLpSol(double[], double[], double[], double[])`.
`void`	`getLpSol(double[] x, double[] slack, double[] duals, double[] djs)` Used to obtain the LP solution values following optimization.
`double[]`	`getLpSolDjs()` Get the djs values of a solution.
`double[]`	`getLpSolDuals()` Get the duals values of a solution.
`double[]`	`getLpSolSlack()` Get the slack values of a solution.
`XPRSprob.SolVal`	`getLpSolVal(int col, int row)` Get LP solution value.
`void`	`getLpSolVal(int col, int row, DoubleHolder p_x, DoubleHolder p_slack, DoubleHolder p_dual, DoubleHolder p_dj)` Used to obtain a single LP solution value following optimization.
`double[]`	`getLpSolX()` Get the x values of a solution.
`int`	`getMessageStatus(int msgcode)` Convenience wrapper for `getMessageStatus(int, IntHolder)`.
`void`	`getMessageStatus(int msgcode, IntHolder p_status)` Retrieves the current suppression status of a message.
`XPRSprob.Solution`	`getMipSol()` Get a solution.
`void`	`getMipSol(double[] x)` Convenience wrapper for `getMipSol(double[], double[])`.
`void`	`getMipSol(double[] x, double[] slack)` Used to obtain the solution values of the last MIP solution that was found.
`double[]`	`getMipSolSlack()` Get the slack values of a solution.
`XPRSprob.SolVal`	`getMipSolVal(int col, int row)` Get MIP solution value.
`void`	`getMipSolVal(int col, int row, DoubleHolder p_x, DoubleHolder p_slack)` Used to obtain a single solution value of the last MIP solution that was found.
`double[]`	`getMipSolX()` Get the x values of a solution.
`void`	`getMQObj(int[] start, int[] colind, double[] objqcoef, int maxcoefs, IntHolder p_ncoefs, int first, int last)` Returns the nonzeros in the quadratic objective coefficients matrix for the columns in a given range.
`int`	`getMQObj(int[] start, int[] colind, double[] objqcoef, int maxcoefs, int first, int last)` Convenience wrapper for `getMQObj(int[], int[], double[], int, IntHolder, int, int)`.
`XPRSprob.MatrixInfo`	`getMQObj(int first, int last)` Get quadratic objective matrix for range of columns.
`long`	`getMQObj(long[] start, int[] colind, double[] objqcoef, long maxcoefs, int first, int last)` Convenience wrapper for `getMQObj(long[], int[], double[], long, LongHolder, int, int)`.
`void`	`getMQObj(long[] start, int[] colind, double[] objqcoef, long maxcoefs, LongHolder p_ncoefs, int first, int last)` Returns the nonzeros in the quadratic objective coefficients matrix for the columns in a given range.
`java.lang.String`	`getName(int type, int elt)` Get the name of a single element.
`XPRSnamelist`	`getNameListObject(int type)`
`java.lang.String[]`	`getNames(int type, int first, int last)` Get names.
`void`	`getNames(int type, java.lang.String[] names, int first, int last)` Get names.
`void`	`getObj(double[] objcoef, int first, int last)` Returns the objective function coefficients for the columns in a given range.
`double`	`getObj(int x)` Convenience wrapper for `getObj(double[], int, int)`.
`void`	`getPivotOrder(int[] pivotorder)` Returns the pivot order of the basic variables.
`void`	`getPivots(int enter, int[] outlist, double[] x, DoubleHolder p_objval, IntHolder p_npivots, int maxpivots)` Returns a list of potential leaving variables if a specified variable enters the basis.
`void`	`getPresolveBasis(int[] rowstat, int[] colstat)` Returns the current basis from memory into the user's data areas.
`void`	`getPresolveMap(int[] rowmap, int[] colmap)` Returns the mapping of the row and column numbers from the presolve problem back to the original problem.
`XPRSprob.Solution`	`getPresolveSol()` Get a solution.
`void`	`getPresolveSol(double[] x)` Convenience wrapper for `getPresolveSol(double[], double[], double[], double[])`.
`void`	`getPresolveSol(double[] x, double[] slack, double[] duals, double[] djs)` Returns the solution for the presolved problem from memory.
`double[]`	`getPresolveSolDjs()` Get the djs values of a solution.
`double[]`	`getPresolveSolDuals()` Get the duals values of a solution.
`double[]`	`getPresolveSolSlack()` Get the slack values of a solution.
`double[]`	`getPresolveSolX()` Get the x values of a solution.
`boolean`	`getPrimalRay(double[] ray)` Get primal ray.
`void`	`getPrimalRay(double[] ray, IntHolder p_hasray)` Retrieves a primal ray (primal unbounded direction) for the current problem, if the problem is found to be unbounded.
`java.lang.String`	`getProbName()` Convenience wrapper for `getProbName(StringHolder)`.
`void`	`getProbName(StringHolder name)` Returns the current problem name.
`void`	`getPwlCons(int[] colind, int[] resultant, int[] start, double[] xval, double[] yval, int maxpoints, IntHolder p_npoints, int first, int last)` Returns the piecewise linear constraints `y = f(x)` in a given range.
`void`	`getPwlCons(int[] colind, int[] resultant, long[] start, double[] xval, double[] yval, long maxpoints, LongHolder p_npoints, int first, int last)` Returns the piecewise linear constraints `y = f(x)` in a given range.
`XPRSprob.PWLInfo`	`getPwlCons(int first, int last)` Query a range of PWL constraints.
`java.lang.String`	`getPWLName(int idx)` Get the name of a PWL constrant.
`java.lang.String[]`	`getPWLNames(int first, int last)` Get names of PWL constraints.
`double`	`getQObj(int objqcol1, int objqcol2)` Convenience wrapper for `getQObj(int, int, DoubleHolder)`.
`void`	`getQObj(int objqcol1, int objqcol2, DoubleHolder p_objqcoef)` Returns a single quadratic objective function coefficient corresponding to the variable pair `(objqcol1, objqcol2)` of the Hessian matrix.
`double`	`getQRowCoeff(int row, int rowqcol1, int rowqcol2)` Convenience wrapper for `getQRowCoeff(int, int, int, DoubleHolder)`.
`void`	`getQRowCoeff(int row, int rowqcol1, int rowqcol2, DoubleHolder p_rowqcoef)` Returns a single quadratic constraint coefficient corresponding to the variable pair ( `rowqcol1`, `rowqcol2`) of the Hessian of a given constraint.
`int[]`	`getQRowIndices()` Get quadratic rows.
`void`	`getQRowQMatrix(int row, int[] start, int[] colind, double[] rowqcoef, int maxcoefs, IntHolder p_ncoefs, int first, int last)` Returns the nonzeros in a quadratic constraint coefficients matrix for the columns in a given range.
`int`	`getQRowQMatrix(int row, int[] start, int[] colind, double[] rowqcoef, int maxcoefs, int first, int last)` Convenience wrapper for `getQRowQMatrix(int, int[], int[], double[], int, IntHolder, int, int)`.
`XPRSprob.MatrixTriplets`	`getQRowQMatrixTriplets(int row)` Get quadratic row.
`int`	`getQRowQMatrixTriplets(int row, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef)` Convenience wrapper for `getQRowQMatrixTriplets(int, IntHolder, int[], int[], double[])`.
`void`	`getQRowQMatrixTriplets(int row, IntHolder p_ncoefs, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef)` Returns the nonzeros in a quadratic constraint coefficients matrix as triplets (index pairs with coefficients).
`int`	`getQRows()` Convenience wrapper for `getQRows(IntHolder, int[])`.
`int`	`getQRows(int[] rowind)` Convenience wrapper for `getQRows(IntHolder, int[])`.
`void`	`getQRows(IntHolder p_nrows, int[] rowind)` Returns the list indices of the rows that have quadratic coefficients.
`void`	`getRHS(double[] rhs, int first, int last)` Returns the right hand side elements for the rows in a given range.
`double`	`getRHS(int x)` Convenience wrapper for `getRHS(double[], int, int)`.
`void`	`getRHSrange(double[] rng, int first, int last)` Returns the right hand side range values for the rows in a given range.
`double`	`getRHSrange(int x)` Convenience wrapper for `getRHSrange(double[], int, int)`.
`int`	`getRowBasisVal(int row)` Get basis status for a row.
`java.lang.String`	`getRowName(int idx)` Get the name of a row.
`java.lang.String[]`	`getRowNames(int first, int last)` Get names of rows.
`void`	`getRows(int[] start, int[] colind, double[] colcoef, int maxcoefs, IntHolder p_ncoefs, int first, int last)` Returns the nonzeros in the constraint matrix for the rows in a given range.
`int`	`getRows(int[] start, int[] colind, double[] colcoef, int maxcoefs, int first, int last)` Convenience wrapper for `getRows(int[], int[], double[], int, IntHolder, int, int)`.
`XPRSprob.MatrixInfo`	`getRows(int first, int last)` Get range of rows.
`long`	`getRows(long[] start, int[] colind, double[] colcoef, long maxcoefs, int first, int last)` Convenience wrapper for `getRows(long[], int[], double[], long, LongHolder, int, int)`.
`void`	`getRows(long[] start, int[] colind, double[] colcoef, long maxcoefs, LongHolder p_ncoefs, int first, int last)` Returns the nonzeros in the constraint matrix for the rows in a given range.
`void`	`getRowType(byte[] rowtype, int first, int last)` Returns the row types for the rows in a given range.
`byte`	`getRowType(int x)` Convenience wrapper for `getRowType(byte[], int, int)`.
`XPRSprob.InfeasInfo`	`getScaledInfeas()` Get scaled infeasibilities.
`void`	`getScaledInfeas(IntHolder p_nprimalcols, IntHolder p_nprimalrows, IntHolder p_ndualrows, IntHolder p_ndualcols, int[] x, int[] slack, int[] duals, int[] djs)` Returns a list of scaled infeasible primal and dual variables for the original problem.
`java.lang.String`	`getSetName(int idx)` Get the name of a set (SOS).
`java.lang.String[]`	`getSetNames(int first, int last)` Get names of sets (SOS).
`XPRSprob.Solution`	`getSol()` Get a solution.
`void`	`getSol(double[] x)` Convenience wrapper for `getSol(double[], double[], double[], double[])`.
`void`	`getSol(double[] x, double[] slack, double[] duals, double[] djs)`
`double[]`	`getSolDjs()` Get the djs values of a solution.
`double[]`	`getSolDuals()` Get the duals values of a solution.
`double[]`	`getSolSlack()` Get the slack values of a solution.
`double[]`	`getSolX()` Get the x values of a solution.
`java.lang.String`	`getStrAttrib(int _index)`
`void`	`getStrAttrib(int _index, StringHolder _cvalue)`
`java.lang.String`	`getStrControl(int _index)`
`void`	`getStrControl(int _index, StringHolder _svalue)`
`void`	`getStringControl(int control, StringHolder value, int maxbytes, IntHolder p_nbytes)`
`void`	`getStrStringAttrib(int attrib, StringHolder value, int maxbytes, IntHolder p_nbytes)`
`void`	`getUB(double[] ub, int first, int last)` Returns the upper bounds for the columns in a given range.
`double`	`getUB(int x)` Convenience wrapper for `getUB(double[], int, int)`.
`int`	`getUnbVec()` Convenience wrapper for `getUnbVec(IntHolder)`.
`void`	`getUnbVec(IntHolder p_seq)` Returns the index vector which causes the primal simplex or dual simplex algorithm to determine that a matrix is primal or dual unbounded respectively.
`void`	`global()` Deprecated. you should use `lpOptimize(java.lang.String)` or `mipOptimize(java.lang.String)` instead of minim/maxim/global
`void`	`iISAll()` Deprecated. use IISAll instead
`void`	`IISAll()` Performs an automated search for independent Irreducible Infeasible Sets (IIS) in an infeasible problem.
`void`	`iISIsolations(int number)` Deprecated. use IISIsolations instead
`void`	`IISIsolations(int iis)` Performs the isolation identification procedure for an Irreducible Infeasible Set (IIS).
`XPRSprob.IISStatusInfo`	`IISStatus()` Get the IIS status.
`void`	`iISStatus(IntHolder iiscount, int[] rowsizes, int[] colsizes, double[] suminfeas, int[] numinfeas)` Deprecated. use IISStatus instead
`void`	`IISStatus(IntHolder p_niis, int[] nrows, int[] ncols, double[] suminfeas, int[] numinfeas)` Returns statistics on the Irreducible Infeasible Sets (IIS) found so far by `firstIIS` ( `IIS`), `nextIIS` ( `IIS` `-n`) or `iISAll` ( `IIS` `-a`).
`void`	`initGlobal()` Deprecated.
`void`	`interrupt()` Convenience wrapper for `interrupt(XPRSenumerations.StopType)`.
`void`	`interrupt(int type)` Deprecated. replaced by `interrupt(com.dashoptimization.XPRSenumerations.StopType)`
`void`	`interrupt(XPRSenumerations.StopType reason)` Interrupts the Optimizer algorithms.
`void`	`loadBasis(int[] rowstat, int[] colstat)` Loads a basis from the user's areas.
`void`	`loadBranchDirs(int x, int value)` Convenience wrapper for `loadBranchDirs(int, int[], int[])`.
`void`	`loadBranchDirs(int ncols, int[] colind, int[] dir)` Loads directives into the current problem to specify which global entities the Optimizer should continue to branch on when a node solution is global feasible.
`void`	`loadCuts(int coltype, int interp)` Convenience wrapper for `loadCuts(int, int, int, XPRScut[])`.
`void`	`loadCuts(int itype, int interp, int ncuts, long[] mcutind)` Deprecated. replaced by `loadCuts(int,int,int,com.dashoptimization.XPRScut[])`
`void`	`loadCuts(int coltype, int interp, int ncuts, XPRScut[] cutind)` Loads cuts from the cut pool into the matrix.
`void`	`loadCuts(int ncuts, XPRScut[] cutind)` Convenience wrapper for `loadCuts(int, int, int, XPRScut[])`.
`void`	`loadDelayedRows(int nrows, int[] rowind)` Specifies that a set of rows in the matrix will be treated as delayed rows during a global search.
`void`	`loadDirs(int ndirs, int[] colind, int[] priority, byte[] dir, double[] uppseudo, double[] downpseudo)` Loads directives into the matrix.
`void`	`loadGlobal(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, int[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, int nentities, int nsets, byte[] coltype, int[] entind, double[] limit, byte[] settype, int[] setstart, int[] setind, double[] refval)` Used to load a global problem in to the Optimizer data structures.
`void`	`loadGlobal(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, long[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, int nentities, int nsets, byte[] coltype, int[] entind, double[] limit, byte[] settype, long[] setstart, int[] setind, double[] refval)` Used to load a global problem in to the Optimizer data structures.
`void`	`loadLp()` Load this instance with an empty LP.
`void`	`loadLp(java.lang.String probname)` Load this instance with an empty LP.
`void`	`loadLp(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, int[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub)` Enables the user to pass a matrix directly to the Optimizer, rather than reading the matrix from a file.
`void`	`loadLp(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, long[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub)` Enables the user to pass a matrix directly to the Optimizer, rather than reading the matrix from a file.
`boolean`	`loadLPSol(double[] x, double[] slack, double[] duals, double[] djs)` Load an LP solution for the original (not the presolved) problem.
`void`	`loadLPSol(double[] x, double[] slack, double[] duals, double[] djs, IntHolder p_status)` Loads an LP solution for the problem into the Optimizer.
`int`	`loadMipSol(double[] x)` Convenience wrapper for `loadMipSol(double[], IntHolder)`.
`void`	`loadMipSol(double[] x, IntHolder p_status)` Loads a starting MIP solution for the problem into the Optimizer.
`void`	`loadModelCuts(int nrows, int[] rowind)` Specifies that a set of rows in the matrix will be treated as model cuts.
`void`	`loadPresolveBasis(int[] rowstat, int[] colstat)` Loads a presolved basis from the user's areas.
`void`	`loadPresolveDirs(int ndirs, int[] colind, int[] priority, byte[] dir, double[] uppseudo, double[] downpseudo)` Loads directives into the presolved matrix.
`void`	`loadQCQP(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, int[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, int nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef, int nqrows, int[] qrowind, int[] nrowqcoef, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef)` Used to load a quadratic problem with quadratic side constraints into the Optimizer data structure.
`void`	`loadQCQP(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, long[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, long nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef, int nqrows, int[] qrowind, long[] nrowqcoef, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef)` Used to load a quadratic problem with quadratic side constraints into the Optimizer data structure.
`void`	loadQCQPGlobal(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, int[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, int nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef, int nqrows, int[] qrowind, int[] nrowqcoefs, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef, int nentities, int nsets, byte[] coltype, int[] entind, double[] limit, byte[] settype, int[] setstart, int[] setind, double[] refval) Used to load a global, quadratic problem with quadratic side constraints into the Optimizer data structure.
`void`	loadQCQPGlobal(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, long[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, long nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef, int nqrows, int[] qrowind, long[] nrowqcoefs, int[] rowqcol1, int[] rowqcol2, double[] rowqcoef, int nentities, int nsets, byte[] coltype, int[] entind, double[] limit, byte[] settype, long[] setstart, int[] setind, double[] refval) Used to load a global, quadratic problem with quadratic side constraints into the Optimizer data structure.
`void`	`loadQGlobal(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, int[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, int nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef, int nentities, int nsets, byte[] coltype, int[] entind, double[] limit, byte[] settype, int[] setstart, int[] setind, double[] refval)` Used to load a global problem with quadratic objective coefficients in to the Optimizer data structures.
`void`	`loadQGlobal(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, long[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, long nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef, int nentities, int nsets, byte[] coltype, int[] entind, double[] limit, byte[] settype, long[] setstart, int[] setind, double[] refval)` Used to load a global problem with quadratic objective coefficients in to the Optimizer data structures.
`void`	`loadQP(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, int[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, int nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef)` Used to load a quadratic problem into the Optimizer data structure.
`void`	`loadQP(java.lang.String probname, int ncols, int nrows, byte[] rowtype, double[] rhs, double[] rng, double[] objcoef, long[] start, int[] collen, int[] rowind, double[] rowcoef, double[] lb, double[] ub, long nobjqcoefs, int[] objqcol1, int[] objqcol2, double[] objqcoef)` Used to load a quadratic problem into the Optimizer data structure.
`void`	`loadSecureVecs(int nrows, int ncols, int[] rowind, int[] colind)` Allows the user to mark rows and columns in order to prevent the presolve removing these rows and columns from the matrix.
`void`	`lpOptimize()` Convenience wrapper for `lpOptimize(String)`.
`void`	`lpOptimize(java.lang.String flags)` This function begins a search for the optimal continuous (LP) solution.
`void`	`maxim()` Convenience wrapper for `maxim(String)`.
`void`	`maxim(java.lang.String flags)` Deprecated. you should use `lpOptimize(java.lang.String)` or `mipOptimize(java.lang.String)` instead of minim/maxim/global
`void`	`minim()` Convenience wrapper for `minim(String)`.
`void`	`minim(java.lang.String flags)` Deprecated. you should use `lpOptimize(java.lang.String)` or `mipOptimize(java.lang.String)` instead of minim/maxim/global
`void`	`mipOptimize()` Convenience wrapper for `mipOptimize(String)`.
`void`	`mipOptimize(java.lang.String flags)` This function begins a global search for the optimal MIP solution.
`int`	`nextIIS()` Convenience wrapper for `nextIIS(IntHolder)`.
`void`	`nextIIS(IntHolder p_status)` Continues the search for further Irreducible Infeasible Sets (IIS), or calls `firstIIS` ( `IIS`) if no IIS has been identified yet.
`void`	`nlpDelCoefs(int x, int value)` Convenience wrapper for `nlpDelCoefs(int, int[], int[])`.
`void`	`nlpSetDetRow(int x, int value)` Convenience wrapper for `nlpSetDetRow(int, int[], int[])`.
`void`	`nlpSetInitVal(int x, double value)` Convenience wrapper for `nlpSetInitVal(int, int[], double[])`.
`void`	`objSA(int ncols, int[] colind, double[] lower, double[] upper)` Returns upper and lower sensitivity ranges for specified objective function coefficients.
`void`	`pivot(int enter, int leave)` Performs a simplex pivot by bringing variable `enter` into the basis and removing `leave`.
`void`	`postSolve()` Postsolve the current matrix when it is in a presolved state.
`void`	`presolveRow(char rowtype, int norigcoefs, int[] origcolind, double[] origrowcoef, double origrhs, int maxcoefs, IntHolder p_ncoefs, int[] colind, double[] rowcoef, DoubleHolder p_rhs, IntHolder p_status)` Presolves a row formulated in terms of the original variables such that it can be added to a presolved matrix.
`XPRSprob.RowInfo`	`presolveRow(int[] ind, double[] val, char type, double rhs)` Presolve a row.
`void`	`readBasis()` Convenience wrapper for `readBasis(String, String)`.
`void`	`readBasis(java.lang.String filename)` Convenience wrapper for `readBasis(String, String)`.
`void`	`readBasis(java.lang.String filename, java.lang.String flags)` Instructs the Optimizer to read in a previously saved basis from a file.
`void`	`readBinSol()` Convenience wrapper for `readBinSol(String, String)`.
`void`	`readBinSol(java.lang.String filename)` Convenience wrapper for `readBinSol(String, String)`.
`void`	`readBinSol(java.lang.String filename, java.lang.String flags)` Reads a solution from a binary solution file.
`void`	`readDirs()` Convenience wrapper for `readDirs(String)`.
`void`	`readDirs(java.lang.String filename)` Reads a directives file to help direct the global search.
`void`	`readProb(java.lang.String filename)` Convenience wrapper for `readProb(String, String)`.
`void`	`readProb(java.lang.String filename, java.lang.String flags)` Reads an (X)MPS or LP format matrix from file.
`void`	`readSlxSol()` Convenience wrapper for `readSlxSol(String, String)`.
`void`	`readSlxSol(java.lang.String filename)` Convenience wrapper for `readSlxSol(String, String)`.
`void`	`readSlxSol(java.lang.String filename, java.lang.String flags)` Reads an ASCII solution file [ `.slx`] created by the `writeSlxSol` function.
`int`	`refineMipSol(int options, java.lang.String flags, double[] solution, double[] refined)` Refine a MIP solution.
`void`	`refineMipSol(int options, java.lang.String flags, double[] solution, double[] refined, IntHolder p_status)` Deprecated.
`void`	`removeBarIterationListener()` Removes all BarIteration listeners from the object.
`void`	`removeBarIterationListener(XPRSbarIterationListener listener)` Removes the given BarIteration listener from the object.
`void`	`removeBarIterationListener(XPRSbarIterationListener listener, java.lang.Object data)` Removes the given BarIteration listener with the given data value from the object.
`void`	`removeBarIterationListeners()` Remove all listeners for the BarIteration callback
`void`	`removeBarLogListener()` Removes all BarLog listeners from the object.
`void`	`removeBarLogListener(XPRSbarLogListener listener)` Removes the given BarLog listener from the object.
`void`	`removeBarLogListener(XPRSbarLogListener listener, java.lang.Object data)` Removes the given BarLog listener with the given data value from the object.
`void`	`removeBarLogListeners()` Remove all listeners for the BarLog callback
`void`	`removeBeforeSolveListener()` Removes all BeforeSolve listeners from the object.
`void`	`removeBeforeSolveListener(XPRSbeforeSolveListener listener)` Removes the given BeforeSolve listener from the object.
`void`	`removeBeforeSolveListener(XPRSbeforeSolveListener listener, java.lang.Object data)` Removes the given BeforeSolve listener with the given data value from the object.
`void`	`removeBeforeSolveListeners()` Remove all listeners for the BeforeSolve callback
`void`	`removeChangeBranchObjectListener()` Removes all ChangeBranchObject listeners from the object.
`void`	`removeChangeBranchObjectListener(XPRSchangeBranchObjectListener listener)` Removes the given ChangeBranchObject listener from the object.
`void`	`removeChangeBranchObjectListener(XPRSchangeBranchObjectListener listener, java.lang.Object data)` Removes the given ChangeBranchObject listener with the given data value from the object.
`void`	`removeChangeBranchObjectListeners()` Remove all listeners for the ChangeBranchObject callback
`void`	`removeCheckTimeListener()` Removes all CheckTime listeners from the object.
`void`	`removeCheckTimeListener(XPRScheckTimeListener listener)` Removes the given CheckTime listener from the object.
`void`	`removeCheckTimeListener(XPRScheckTimeListener listener, java.lang.Object data)` Removes the given CheckTime listener with the given data value from the object.
`void`	`removeCheckTimeListeners()` Remove all listeners for the CheckTime callback
`void`	`removeChgBranchListener()` Removes all ChgBranch listeners from the object.
`void`	`removeChgBranchListener(XPRSchgBranchListener listener)` Removes the given ChgBranch listener from the object.
`void`	`removeChgBranchListener(XPRSchgBranchListener listener, java.lang.Object data)` Removes the given ChgBranch listener with the given data value from the object.
`void`	`removeChgBranchListeners()` Remove all listeners for the ChgBranch callback
`void`	`removeChgNodeListener()` Removes all ChgNode listeners from the object.
`void`	`removeChgNodeListener(XPRSchgNodeListener listener)` Removes the given ChgNode listener from the object.
`void`	`removeChgNodeListener(XPRSchgNodeListener listener, java.lang.Object data)` Removes the given ChgNode listener with the given data value from the object.
`void`	`removeChgNodeListeners()` Remove all listeners for the ChgNode callback
`void`	`removeComputeRestartListener()` Removes all ComputeRestart listeners from the object.
`void`	`removeComputeRestartListener(XPRScomputeRestartListener listener)` Removes the given ComputeRestart listener from the object.
`void`	`removeComputeRestartListener(XPRScomputeRestartListener listener, java.lang.Object data)` Removes the given ComputeRestart listener with the given data value from the object.
`void`	`removeComputeRestartListeners()` Remove all listeners for the ComputeRestart callback
`void`	`removeCutLogListener()` Removes all CutLog listeners from the object.
`void`	`removeCutLogListener(XPRScutLogListener listener)` Removes the given CutLog listener from the object.
`void`	`removeCutLogListener(XPRScutLogListener listener, java.lang.Object data)` Removes the given CutLog listener with the given data value from the object.
`void`	`removeCutLogListeners()` Remove all listeners for the CutLog callback
`void`	`removeCutMgrListener()` Removes all CutMgr listeners from the object.
`void`	`removeCutMgrListener(XPRScutMgrListener listener)` Removes the given CutMgr listener from the object.
`void`	`removeCutMgrListener(XPRScutMgrListener listener, java.lang.Object data)` Removes the given CutMgr listener with the given data value from the object.
`void`	`removeCutMgrListeners()` Remove all listeners for the CutMgr callback
`void`	`removeDestroyMTListener()` Removes all DestroyMT listeners from the object.
`void`	`removeDestroyMTListener(XPRSdestroyMTListener listener)` Removes the given DestroyMT listener from the object.
`void`	`removeDestroyMTListener(XPRSdestroyMTListener listener, java.lang.Object data)` Removes the given DestroyMT listener with the given data value from the object.
`void`	`removeDestroyMTListeners()` Remove all listeners for the DestroyMT callback
`void`	`removeEstimateListener()` Removes all Estimate listeners from the object.
`void`	`removeEstimateListener(XPRSestimateListener listener)` Removes the given Estimate listener from the object.
`void`	`removeEstimateListener(XPRSestimateListener listener, java.lang.Object data)` Removes the given Estimate listener with the given data value from the object.
`void`	`removeEstimateListeners()` Remove all listeners for the Estimate callback
`void`	`removeGapNotifyListener()` Removes all GapNotify listeners from the object.
`void`	`removeGapNotifyListener(XPRSgapNotifyListener listener)` Removes the given GapNotify listener from the object.
`void`	`removeGapNotifyListener(XPRSgapNotifyListener listener, java.lang.Object data)` Removes the given GapNotify listener with the given data value from the object.
`void`	`removeGapNotifyListeners()` Remove all listeners for the GapNotify callback
`void`	`removeGlobalLogListener()` Removes all GlobalLog listeners from the object.
`void`	`removeGlobalLogListener(XPRSglobalLogListener listener)` Removes the given GlobalLog listener from the object.
`void`	`removeGlobalLogListener(XPRSglobalLogListener listener, java.lang.Object data)` Removes the given GlobalLog listener with the given data value from the object.
`void`	`removeGlobalLogListeners()` Remove all listeners for the GlobalLog callback
`void`	`removeInfNodeListener()` Removes all InfNode listeners from the object.
`void`	`removeInfNodeListener(XPRSinfNodeListener listener)` Removes the given InfNode listener from the object.
`void`	`removeInfNodeListener(XPRSinfNodeListener listener, java.lang.Object data)` Removes the given InfNode listener with the given data value from the object.
`void`	`removeInfNodeListeners()` Remove all listeners for the InfNode callback
`void`	`removeIntSolListener()` Removes all IntSol listeners from the object.
`void`	`removeIntSolListener(XPRSintSolListener listener)` Removes the given IntSol listener from the object.
`void`	`removeIntSolListener(XPRSintSolListener listener, java.lang.Object data)` Removes the given IntSol listener with the given data value from the object.
`void`	`removeIntSolListeners()` Remove all listeners for the IntSol callback
`void`	`removeLpLogListener()` Removes all LpLog listeners from the object.
`void`	`removeLpLogListener(XPRSlpLogListener listener)` Removes the given LpLog listener from the object.
`void`	`removeLpLogListener(XPRSlpLogListener listener, java.lang.Object data)` Removes the given LpLog listener with the given data value from the object.
`void`	`removeLpLogListeners()` Remove all listeners for the LpLog callback
`void`	`removeMessageListener()` Removes all Message listeners from the object.
`void`	`removeMessageListener(XPRSmessageListener listener)` Removes the given Message listener from the object.
`void`	`removeMessageListener(XPRSmessageListener listener, java.lang.Object data)` Removes the given Message listener with the given data value from the object.
`void`	`removeMessageListeners()` Remove all listeners for the Message callback
`void`	`removeMipThreadListener()` Removes all MipThread listeners from the object.
`void`	`removeMipThreadListener(XPRSmipThreadListener listener)` Removes the given MipThread listener from the object.
`void`	`removeMipThreadListener(XPRSmipThreadListener listener, java.lang.Object data)` Removes the given MipThread listener with the given data value from the object.
`void`	`removeMipThreadListeners()` Remove all listeners for the MipThread callback
`void`	`removeMsgHandlerListener()` Removes all MsgHandler listeners from the object.
`void`	`removeMsgHandlerListener(XPRSmsgHandlerListener listener)` Removes the given MsgHandler listener from the object.
`void`	`removeMsgHandlerListener(XPRSmsgHandlerListener listener, java.lang.Object data)` Removes the given MsgHandler listener with the given data value from the object.
`void`	`removeMsgHandlerListeners()` Remove all listeners for the MsgHandler callback
`void`	`removeNewnodeListener()` Removes all Newnode listeners from the object.
`void`	`removeNewnodeListener(XPRSnewnodeListener listener)` Removes the given Newnode listener from the object.
`void`	`removeNewnodeListener(XPRSnewnodeListener listener, java.lang.Object data)` Removes the given Newnode listener with the given data value from the object.
`void`	`removeNewnodeListeners()` Remove all listeners for the Newnode callback
`void`	`removeNodeCutoffListener()` Removes all NodeCutoff listeners from the object.
`void`	`removeNodeCutoffListener(XPRSnodeCutoffListener listener)` Removes the given NodeCutoff listener from the object.
`void`	`removeNodeCutoffListener(XPRSnodeCutoffListener listener, java.lang.Object data)` Removes the given NodeCutoff listener with the given data value from the object.
`void`	`removeNodeCutoffListeners()` Remove all listeners for the NodeCutoff callback
`void`	`removeOptNodeListener()` Removes all OptNode listeners from the object.
`void`	`removeOptNodeListener(XPRSoptNodeListener listener)` Removes the given OptNode listener from the object.
`void`	`removeOptNodeListener(XPRSoptNodeListener listener, java.lang.Object data)` Removes the given OptNode listener with the given data value from the object.
`void`	`removeOptNodeListeners()` Remove all listeners for the OptNode callback
`void`	`removePreIntsolListener()` Removes all PreIntsol listeners from the object.
`void`	`removePreIntsolListener(XPRSpreIntsolListener listener)` Removes the given PreIntsol listener from the object.
`void`	`removePreIntsolListener(XPRSpreIntsolListener listener, java.lang.Object data)` Removes the given PreIntsol listener with the given data value from the object.
`void`	`removePreIntsolListeners()` Remove all listeners for the PreIntsol callback
`void`	`removePreNodeListener()` Removes all PreNode listeners from the object.
`void`	`removePreNodeListener(XPRSpreNodeListener listener)` Removes the given PreNode listener from the object.
`void`	`removePreNodeListener(XPRSpreNodeListener listener, java.lang.Object data)` Removes the given PreNode listener with the given data value from the object.
`void`	`removePreNodeListeners()` Remove all listeners for the PreNode callback
`void`	`removePresolveListener()` Removes all Presolve listeners from the object.
`void`	`removePresolveListener(XPRSpresolveListener listener)` Removes the given Presolve listener from the object.
`void`	`removePresolveListener(XPRSpresolveListener listener, java.lang.Object data)` Removes the given Presolve listener with the given data value from the object.
`void`	`removePresolveListeners()` Remove all listeners for the Presolve callback
`void`	`removeSepNodeListener()` Removes all SepNode listeners from the object.
`void`	`removeSepNodeListener(XPRSsepNodeListener listener)` Removes the given SepNode listener from the object.
`void`	`removeSepNodeListener(XPRSsepNodeListener listener, java.lang.Object data)` Removes the given SepNode listener with the given data value from the object.
`void`	`removeSepNodeListeners()` Remove all listeners for the SepNode callback
`void`	`removeUserSolNotifyListener()` Removes all UserSolNotify listeners from the object.
`void`	`removeUserSolNotifyListener(XPRSuserSolNotifyListener listener)` Removes the given UserSolNotify listener from the object.
`void`	`removeUserSolNotifyListener(XPRSuserSolNotifyListener listener, java.lang.Object data)` Removes the given UserSolNotify listener with the given data value from the object.
`void`	`removeUserSolNotifyListeners()` Remove all listeners for the UserSolNotify callback
`int`	`repairInfeas(char ptype, char phase2, char flags, double lepref, double gepref, double lbpref, double ubpref, double delta)` Repair infeasiblities.
`void`	`repairInfeas(IntHolder p_status, char penalty, char phase2, char flags, double lepref, double gepref, double lbpref, double ubpref, double delta)` Provides a simplified interface for `repairWeightedInfeas`.
`int`	`repairWeightedInfeas(double[] lepref, double[] gepref, double[] lbpref, double[] ubpref, char phase2, double delta, java.lang.String flags)` Repair weighted infeasibilites.
`void`	`repairWeightedInfeas(IntHolder p_status, double[] lepref, double[] gepref, double[] lbpref, double[] ubpref, char phase2, double delta, java.lang.String flags)` By relaxing a set of selected constraints and bounds of an infeasible problem, it attempts to identify a 'solution' that violates the selected set of constraints and bounds minimally, while satisfying all other constraints and bounds.
`int`	`repairWeightedInfeasBounds(double[] lepref, double[] gepref, double[] lbpref, double[] ubpref, double[] lerelax, double[] gerelax, double[] lbrelax, double[] ubrelax, char phase2, double delta, java.lang.String flags)` Repair weighted infeasibility bounds.
`void`	`repairWeightedInfeasBounds(IntHolder p_status, double[] lepref, double[] gepref, double[] lbpref, double[] ubpref, double[] lerelax, double[] gerelax, double[] lbrelax, double[] ubrelax, char phase2, double delta, java.lang.String flags)` An extended version of `repairWeightedInfeas` that allows for bounding the level of relaxation allowed.
`void`	`restore()` Convenience wrapper for `restore(String, String)`.
`void`	`restore(java.lang.String probname)` Convenience wrapper for `restore(String, String)`.
`void`	`restore(java.lang.String probname, java.lang.String flags)` Restores the Optimizer's data structures from a file created by `save` ( `SAVE`).
`void`	`rhsSA(int nrows, int[] rowind, double[] lower, double[] upper)` Returns upper and lower sensitivity ranges for specified right hand side (RHS) function coefficients.
`void`	`save()` Saves the current data structures, i.e.
`void`	`saveAs(java.lang.String filename)`
`void`	`scale(int[] rowscale, int[] colscale)` Re-scales the current matrix.
`void`	`setBranchBounds(XPRSbounds bounds)` Specifies the bounds previously stored using `storeBounds` that are to be applied in order to branch on a user global entity.
`void`	`setBranchCuts(int nbcuts, int[] mindex)` Deprecated. replaced by `setBranchCuts(int,com.dashoptimization.XPRScut[])`
`void`	`setBranchCuts(int nbcuts, long[] mindex)` Deprecated. replaced by `setBranchCuts(int,com.dashoptimization.XPRScut[])`
`void`	`setBranchCuts(int ncuts, XPRScut[] cutind)` Specifies the pointers to cuts in the cut pool that are to be applied in order to branch on a user global entity.
`void`	`setDblControl(int control, double value)` Sets the value of a given double control parameter.
`void`	`setDefaultControl(int control)` Sets a single control to its default value.
`void`	`setDefaults()` Sets all controls to their default values.
`void`	`setIndicators(int nrows, int[] rowind, int[] colind, int[] complement)` Specifies that a set of rows in the matrix will be treated as indicator constraints, during a global search.
`void`	`setIntControl(int control, int value)` Sets the value of a given integer control parameter.
`void`	`setLogFile(java.lang.String filename)` This directs all Optimizer output to a log file.
`void`	`setLongControl(int control, long value)` Sets the value of a given integer control parameter.
`void`	`setMessageStatus(int msgcode, int status)` Manages suppression of messages.
`void`	`setProbname(java.lang.String probname)` Sets the current default problem name.
`void`	`setStrControl(int control, java.lang.String value)` Used to set the value of a given string control parameter.
`void`	`sparseBTran(double[] val, int[] ind, IntHolder p_ncoefs)`
`void`	`sparseFTran(double[] val, int[] ind, IntHolder p_ncoefs)`
`XPRSbounds`	`storeBounds(int nbounds, int[] colind, byte[] bndtype, double[] bndval)` Convenience wrapper for `storeBounds(int, int[], byte[], double[], XPRSbounds)`.
`void`	`storeBounds(int nbounds, int[] colind, byte[] bndtype, double[] bndval, XPRSbounds p_bounds)` Stores bounds for node separation using user separate callback function.
`void`	`storeCuts(int ncuts, int nodupl, int[] mtype, byte[] qrtype, double[] drhs, int[] mstart, long[] mindex, int[] mcols, double[] dmatval)` Deprecated. replaced by `storeCuts(int,int,int[],byte[],double[],int[],com.dashoptimization.XPRScut[],int[],double[])`
`void`	`storeCuts(int ncuts, int nodups, int[] cuttype, byte[] rowtype, double[] rhs, int[] start, XPRScut[] cutind, int[] colind, double[] cutcoef)` Stores cuts into the cut pool, but does not apply them to the current node.
`void`	`storeCuts(int ncuts, int nodups, int[] cuttype, byte[] rowtype, double[] rhs, long[] start, XPRScut[] cutind, int[] colind, double[] cutcoef)` Stores cuts into the cut pool, but does not apply them to the current node.
`void`	`strongBranch(int nbounds, int[] colind, byte[] bndtype, double[] bndval, int iterlim, double[] objval, int[] status)` Performs strong branching iterations on all specified bound changes.
`void`	`strongBranchCB(int nbounds, int[] colind, byte[] bndtype, double[] bndval, int iterlim, double[] objval, int[] status, XPRSstrongBranchSolveListener callback, java.lang.Object data)` Performs strong branching iterations on all specified bound changes.
`void`	`tune(java.lang.String flags)` This function begins a tuner session for the current problem.
`void`	`tunerReadMethod(java.lang.String methodfile)` This function loads a user defined tuner method from the given file.
`void`	`tunerWriteMethod(java.lang.String methodfile)` This function writes the current tuner method to a given file or prints it to the console.
`void`	`writeBasis()` Convenience wrapper for `writeBasis(String, String)`.
`void`	`writeBasis(java.lang.String filename)` Convenience wrapper for `writeBasis(String, String)`.
`void`	`writeBasis(java.lang.String filename, java.lang.String flags)` Writes the current basis to a file for later input into the Optimizer.
`void`	`writeBinSol()` Convenience wrapper for `writeBinSol(String, String)`.
`void`	`writeBinSol(java.lang.String filename)` Convenience wrapper for `writeBinSol(String, String)`.
`void`	`writeBinSol(java.lang.String filename, java.lang.String flags)` Writes the current MIP or LP solution to a binary solution file for later input into the Optimizer.
`void`	`writeDirs()` Convenience wrapper for `writeDirs(String)`.
`void`	`writeDirs(java.lang.String filename)` Writes the global search directives from the current problem to a directives file.
`void`	`writeIIS(int iis, java.lang.String filename, int filetype)` Convenience wrapper for `writeIIS(int, String, int, String)`.
`void`	`writeIIS(int iis, java.lang.String filename, int filetype, java.lang.String flags)` Writes an LP/MPS/CSV file containing a given Irreducible Infeasible Set (IIS).
`void`	`writeProb()` Convenience wrapper for `writeProb(String, String)`.
`void`	`writeProb(java.lang.String filename)` Convenience wrapper for `writeProb(String, String)`.
`void`	`writeProb(java.lang.String filename, java.lang.String flags)` Writes the current problem to an MPS or LP file.
`void`	`writePrtSol()` Convenience wrapper for `writePrtSol(String, String)`.
`void`	`writePrtSol(java.lang.String filename)` Convenience wrapper for `writePrtSol(String, String)`.
`void`	`writePrtSol(java.lang.String filename, java.lang.String flags)` Writes the current solution to a fixed format ASCII file, problem_name `.prt`.
`void`	`writeSlxSol()` Convenience wrapper for `writeSlxSol(String, String)`.
`void`	`writeSlxSol(java.lang.String filename)` Convenience wrapper for `writeSlxSol(String, String)`.
`void`	`writeSlxSol(java.lang.String filename, java.lang.String flags)` Creates an ASCII solution file ( `.slx`) using a similar format to MPS files.
`void`	`writeSol()` Convenience wrapper for `writeSol(String, String)`.
`void`	`writeSol(java.lang.String filename)` Convenience wrapper for `writeSol(String, String)`.
`void`	`writeSol(java.lang.String filename, java.lang.String flags)` Writes the current solution to a CSV format ASCII file, problem_name `.asc` (and `.hdr`).

Methods inherited from class com.dashoptimization.XPRSobject
addMsgHandlerListener, addMsgHandlerListener, destroy, isDestroyed

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- XPRSprob
```
public XPRSprob()
         throws XPRSprobException
```
  Creates a new, empty problem. The functions calls XPRS.init("") so you don't have to do that explicitly. You may still call XPRS.init("") explicitly in case you want non-standard initialization. Note that instances of this class should be explicitly cleaned up by calling close() so that native resources can be released and licenses can be released. A good practice is to use instances of this class with try-with-resources.
  
  Throws:
  
  XPRSprobException

Method Detail

close
```
public void close()
```
Destroy the problem, deallocating all memory used. Release any resources allocated for this problem instance. Also calls XPRS.free() to match the call to XPRS.init("") performed by the constructor.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in class XPRSobject

Since:

38

setBranchCuts

public void setBranchCuts(int nbcuts,
                          long[] mindex)
                   throws XPRSprobException

Deprecated. replaced by setBranchCuts(int,com.dashoptimization.XPRScut[])

Throws:: XPRSprobException

setBranchCuts
```
public void setBranchCuts(int nbcuts,
                          int[] mindex)
                   throws XPRSprobException
```
Deprecated. replaced by setBranchCuts(int,com.dashoptimization.XPRScut[])

Included for binary compatibility with 2007A - note does not work on 64-bit!

Throws:

XPRSprobException

delCPCuts

public void delCPCuts(int itype,
                      int interp,
                      int ncuts,
                      long[] mcutind)
               throws XPRSprobException

Deprecated. replaced by delCPCuts(int,int,int,com.dashoptimization.XPRScut[])

Throws:: XPRSprobException

delCuts

public void delCuts(int ibasis,
                    int itype,
                    int interp,
                    double delta,
                    int ncuts,
                    long[] mcutind)
             throws XPRSprobException

Deprecated. replaced by delCuts(int,int,int,double,int,com.dashoptimization.XPRScut[])

Throws:: XPRSprobException

getCPCutList

public void getCPCutList(int itype,
                         int interp,
                         double delta,
                         IntHolder ncuts,
                         int maxcuts,
                         long[] mcutind,
                         double[] dviol)
                  throws XPRSprobException

Deprecated. replaced by getCPCutList(int,int,double,com.dashoptimization.IntHolder,int,com.dashoptimization.XPRScut[],double[])

Throws:: XPRSprobException

getCPCuts

public void getCPCuts(long[] mindex,
                      int ncuts,
                      int size,
                      int[] mtype,
                      byte[] qrtype,
                      int[] mstart,
                      int[] mcols,
                      double[] dmatval,
                      double[] drhs)
               throws XPRSprobException

Deprecated. replaced by getCPCuts(com.dashoptimization.XPRScut[],int,int,int[],byte[],int[],int[],double[],double[])

Throws:: XPRSprobException

getCutList

public void getCutList(int itype,
                       int interp,
                       IntHolder ncuts,
                       int maxcuts,
                       long[] mcutind)
                throws XPRSprobException

Deprecated. replaced by getCutList(int,int,com.dashoptimization.IntHolder,int,com.dashoptimization.XPRScut[])

Throws:: XPRSprobException

loadCuts

public void loadCuts(int itype,
                     int interp,
                     int ncuts,
                     long[] mcutind)
              throws XPRSprobException

Deprecated. replaced by loadCuts(int,int,int,com.dashoptimization.XPRScut[])

Throws:: XPRSprobException

storeCuts

public void storeCuts(int ncuts,
                      int nodupl,
                      int[] mtype,
                      byte[] qrtype,
                      double[] drhs,
                      int[] mstart,
                      long[] mindex,
                      int[] mcols,
                      double[] dmatval)
               throws XPRSprobException

Deprecated. replaced by storeCuts(int,int,int[],byte[],double[],int[],com.dashoptimization.XPRScut[],int[],double[])

Throws:: XPRSprobException

interrupt
```
public void interrupt(int type)
```
Deprecated. replaced by interrupt(com.dashoptimization.XPRSenumerations.StopType)

iISStatus

public void iISStatus(IntHolder iiscount,
                      int[] rowsizes,
                      int[] colsizes,
                      double[] suminfeas,
                      int[] numinfeas)
               throws XPRSprobException

Deprecated. use IISStatus instead

Throws:: XPRSprobException

iISAll

public void iISAll()
            throws XPRSprobException

Deprecated. use IISAll instead

Throws:: XPRSprobException

iISIsolations

public void iISIsolations(int number)
                   throws XPRSprobException

Deprecated. use IISIsolations instead

Throws:: XPRSprobException

getNames
```
public void getNames(int type,
                     java.lang.String[] names,
                     int first,
                     int last)
              throws XPRSprobException
```
Get names. Retrieves names for a certain type of objects.

Parameters:

type - The type of object for which names should be retrieved: 1 for row names, 2 for column names, 3 for SOS names, 4 for PWL names, 5 for general constraint names.

names - Buffer in which the names are stored. Must have length at least 1 + list - first.

first - Index of first name to be retrieved.

last - Index of last name to be retrieved.

Throws:

XPRSprobException

getNames
```
public java.lang.String[] getNames(int type,
                                   int first,
                                   int last)
                            throws XPRSprobException
```
Get names. Retrieves names for a certain type of objects.

Parameters:

type - The type of object for which names should be retrieved: 1 for row names, 2 for column names, 3 for SOS names, 4 for PWL names, 5 for general constraint names.

first - Index of first name to be retrieved.

last - Index of last name to be retrieved.

Returns:

The requested names.

Throws:

XPRSprobException

getRowNames
```
public java.lang.String[] getRowNames(int first,
                                      int last)
                               throws XPRSprobException
```
Get names of rows.

Parameters:

first - First row index (inclusive).

last - Last row index (inclusive).

Returns:

The names for the specified rows.

Throws:

XPRSprobException - in case of error.

getColumnNames
```
public java.lang.String[] getColumnNames(int first,
                                         int last)
                                  throws XPRSprobException
```
Get names of columns.

Parameters:

first - First column index (inclusive).

last - Last column index (inclusive).

Returns:

The names for the specified columns.

Throws:

XPRSprobException - in case of error.

getSetNames
```
public java.lang.String[] getSetNames(int first,
                                      int last)
                               throws XPRSprobException
```
Get names of sets (SOS).

Parameters:

first - First set index (inclusive).

last - Last set index (inclusive).

Returns:

The names for the specified sets.

Throws:

XPRSprobException - in case of error.

getPWLNames
```
public java.lang.String[] getPWLNames(int first,
                                      int last)
                               throws XPRSprobException
```
Get names of PWL constraints.

Parameters:

first - First PWL index (inclusive).

last - Last PWL index (inclusive).

Returns:

The names for the specified PWL constraints.

Throws:

XPRSprobException - in case of error.

getGenConsNames
```
public java.lang.String[] getGenConsNames(int first,
                                          int last)
                                   throws XPRSprobException
```
Get names of general constraints.

Parameters:

first - First general constraint index (inclusive).

last - Last general constraint index (inclusive).

Returns:

The names for the specified general constraints.

Throws:

XPRSprobException - in case of error.

getNameListObject

public XPRSnamelist getNameListObject(int type)
                               throws XPRSprobException

Throws:: XPRSprobException

getStrControl

public void getStrControl(int _index,
                          StringHolder _svalue)
                   throws XPRSprobException

Throws:: XPRSprobException

getStrAttrib

public void getStrAttrib(int _index,
                         StringHolder _cvalue)
                  throws XPRSprobException

Throws:: XPRSprobException

getStrControl

public java.lang.String getStrControl(int _index)
                               throws XPRSprobException

Throws:: XPRSprobException

getStrAttrib

public java.lang.String getStrAttrib(int _index)
                              throws XPRSprobException

Throws:: XPRSprobException

addNames

public void addNames(int type,
                     java.lang.String[] _sname,
                     int first,
                     int last)
              throws XPRSprobException

Throws:: XPRSprobException

addSetNames

public void addSetNames(java.lang.String[] _sname,
                        int first,
                        int last)
                 throws XPRSprobException

Throws:: XPRSprobException

chgMCoef

public void chgMCoef(int[] _mrow,
                     int[] _mcol,
                     double[] _dval,
                     int ncoeffs)
              throws XPRSprobException

Deprecated.

Version of chgMCoef function with parameters in a different order, to maintain compatibility with pre-2008A API

Throws:: XPRSprobException

chgMQObj

public void chgMQObj(int[] _mcol1,
                     int[] _mcol2,
                     double[] _dval,
                     int ncols)
              throws XPRSprobException

Deprecated.

Version of chgMQObj function with parameters in a different order, to maintain compatibility with pre-2008A API.

Throws:: XPRSprobException

chgObjSense
```
public void chgObjSense(int objsense)
                 throws XPRSprobException
```
Deprecated. use chgObjSense(com.dashoptimization.XPRSenumerations.ObjSense) instead

Retained to maintain compatibility with Xpress 7.0.

Throws:

XPRSprobException

createBranchObject

public XPRSbranchobject createBranchObject(boolean isOriginal)
                                    throws XPRSprobException

Creates a new XPRSbranchobject

Throws:: XPRSprobException

createBranchObjectFromGlobal

public XPRSbranchobject createBranchObjectFromGlobal(int icol)
                                              throws XPRSprobException

Creates a new XPRSbranchobject

Throws:: XPRSprobException

getPwlCons
```
public XPRSprob.PWLInfo getPwlCons(int first,
                                   int last)
                            throws XPRSprobException
```
Query a range of PWL constraints.

Parameters:

first - See getPwlCons(int[], int[], int[], double[], double[], int, IntHolder, int, int).

last - See getPwlCons(int[], int[], int[], double[], double[], int, IntHolder, int, int).

Returns:

the number of points in the queried PWLs.

Throws:

XPRSprobException - in case of error.

getGenCons
```
public XPRSprob.GeneralConstraintInfo getGenCons(int first,
                                                 int last)
                                          throws XPRSprobException
```
Query a range of general constraints.

Parameters:

first - First constraint index to query (inclusive).

last - Last constraint index to query (inclusive).

Returns:

the specification of the queried constraints.

Throws:

XPRSprobException - in case of error.

getInfeas

public XPRSprob.InfeasInfo getInfeas()
                              throws XPRSprobException

Get infeasibilities.

Returns:: Information about infeasibilites.
Throws:: XPRSprobException

getScaledInfeas
```
public XPRSprob.InfeasInfo getScaledInfeas()
                                    throws XPRSprobException
```
Get scaled infeasibilities.

Returns:

Information about scaled infeasibilites.

Throws:

XPRSprobException

crossoverLpSol
```
public int crossoverLpSol()
                   throws XPRSprobException
```
Get the crossover LP solution status.

Returns:

the crossover LP solution status.

Throws:

XPRSprobException - in case of error.

getLastBarSol
```
public int getLastBarSol(double[] x,
                         double[] slack,
                         double[] duals,
                         double[] djs)
                  throws XPRSprobException
```
Get the last barrier solution.

Parameters:

x - Array to store the primal column values (may be null).

slack - Array to store the primal slack values (may be null).

duals - Array to store dual row values (may be null).

djs - Array to store reduced costs (may be null).

Returns:

the status of the last barrier solution.

Throws:

XPRSprobException - in case of error.

IISStatus
```
public XPRSprob.IISStatusInfo IISStatus()
                                 throws XPRSprobException
```
Get the IIS status.

Returns:

IIS status information of. If there are no IISs then the returned object will have all empty arrays.

Throws:

XPRSprobException - in case of error.

getIISData
```
public XPRSprob.IISData getIISData(int number)
```
Get information about an IIS.

Parameters:

number - The index of the IIS to query.

Returns:

information about the queried IIS.

Throws:

XPRSprobException - in case of error.

getiis

public XPRSprob.IISInfo getiis()
                        throws XPRSprobException

Query IIS.

Returns:: the IIS.
Throws:: XPRSprobException - in case of error.

getGlobal
```
public XPRSprob.GlobalInfo getGlobal()
                              throws XPRSprobException
```
Get information about global entities and SOS.

Returns:

information about global entities and SOS.

Throws:

XPRSprobException - in case of error.

getGlobalEntities
```
public XPRSprob.GlobalInfo getGlobalEntities()
                                      throws XPRSprobException
```
Get information about global entities.

Returns:

information about global entities.

Throws:

XPRSprobException - in case of error.

getGlobalSets
```
public XPRSprob.GlobalInfo getGlobalSets()
                                  throws XPRSprobException
```
Get information about SOS.

Returns:

information about SOS.

Throws:

XPRSprobException - in case of error.

loadLPSol
```
public boolean loadLPSol(double[] x,
                         double[] slack,
                         double[] duals,
                         double[] djs)
                  throws XPRSprobException
```
Load an LP solution for the original (not the presolved) problem.

Parameters:

x - Variable values (can be null).

slack - Slack values (can be null).

duals - Dual values (can be null).

djs - Reduced costs (can be null).

Returns:

true if the solution was loaded and false false if solution was not loaded because problem is in presolved state.

Throws:

XPRSprobException - in case of error.

repairWeightedInfeas
```
public int repairWeightedInfeas(double[] lepref,
                                double[] gepref,
                                double[] lbpref,
                                double[] ubpref,
                                char phase2,
                                double delta,
                                java.lang.String flags)
                         throws XPRSprobException
```
Repair weighted infeasibilites.

Parameters:

lepref - Preferences for relaxing the less or equal side of row.

gepref - Preferences for relaxing the greater or equal side of a row.

lbpref - Preferences for relaxing lower bounds.

ubpref - Preferences for relaxing upper bounds.

phase2 - Controls the second phase of optimization.

delta - The relaxation multiplier in the second phase -1.

flags - Flags to be passed to the Optimizer.

Returns:

status after the relaxation.

Throws:

XPRSprobException - on error.

repairWeightedInfeasBounds
```
public int repairWeightedInfeasBounds(double[] lepref,
                                      double[] gepref,
                                      double[] lbpref,
                                      double[] ubpref,
                                      double[] lerelax,
                                      double[] gerelax,
                                      double[] lbrelax,
                                      double[] ubrelax,
                                      char phase2,
                                      double delta,
                                      java.lang.String flags)
                               throws XPRSprobException
```
Repair weighted infeasibility bounds.

Parameters:

lepref - Preferences for relaxing the less or equal side of row.

gepref - Preferences for relaxing the greater or equal side of a row.

lbpref - Preferences for relaxing lower bounds.

ubpref - Preferences for relaxing upper bounds.

lerelax - Upper bounds on the amount the less or equal side of a row can be relaxed.

gerelax - Upper bounds on the amount the greater or equal side of a row can be relaxed.

lbrelax - Upper bounds on the amount the lower bounds can be relaxed.

ubrelax - Upper bounds on the amount the upper bounds can be relaxed.

phase2 - Controls the second phase of optimization.

delta - Relaxation multiplier in the second phase -1.

flags - Flags to be passed to the Optimizer.

Returns:

status after the relaxation

Throws:

XPRSprobException - in case of error.

repairInfeas
```
public int repairInfeas(char ptype,
                        char phase2,
                        char flags,
                        double lepref,
                        double gepref,
                        double lbpref,
                        double ubpref,
                        double delta)
                 throws XPRSprobException
```
Repair infeasiblities.

Parameters:

ptype - Type of penalties created from the preferences.

phase2 - Controls the second phase of optimization.

flags - Specifies if the global search should be done.

lepref - Preference for relaxing the less or equal side of row.

gepref - Preference for relaxing the greater or equal side of a row.

lbpref - Preferences for relaxing lower bounds.

ubpref - Preferences for relaxing upper bounds.

delta - Relaxation multiplier in the second phase -1.

Returns:

status after the relaxation.

Throws:

XPRSprobException - in case of error.

basisStability

public double basisStability(int type,
                             int norm,
                             boolean ifscaled)
                      throws XPRSprobException

Compute basis stability.

Returns:: basis stability value.
Throws:: XPRSprobException - in case of error.

getControlInfo
```
public XPRSprob.ControlInfo getControlInfo(java.lang.String name)
                                    throws XPRSprobException
```
Get info about a control.

Parameters:

name - Name of control to query.

Returns:

descriptor for the queried control.

Throws:

XPRSprobException - in case of error.

getAttribInfo
```
public XPRSprob.AttributeInfo getAttribInfo(java.lang.String name)
                                     throws XPRSprobException
```
Get info about an attribute.

Parameters:

name - Name of attribute to query.

Returns:

descriptor for the queried attribute.

Throws:

XPRSprobException - in case of error.

getCols
```
public XPRSprob.MatrixInfo getCols(int first,
                                   int last)
                            throws XPRSprobException
```
Get range of columns.

Parameters:

first - First column index (inclusive).

last - Last column index (inclusive).

Returns:

data for the queried columns.

Throws:

XPRSprobException - in case of error.

getRows
```
public XPRSprob.MatrixInfo getRows(int first,
                                   int last)
                            throws XPRSprobException
```
Get range of rows.

Parameters:

first - First row index (inclusive).

last - Last row index (inclusive).

Returns:

data for the queried rows.

Throws:

XPRSprobException - in case of error.

getMQObj
```
public XPRSprob.MatrixInfo getMQObj(int first,
                                    int last)
                             throws XPRSprobException
```
Get quadratic objective matrix for range of columns.

Parameters:

first - First column index (inclusive).

last - Last column index (inclusive).

Returns:

data for the queried columns.

Throws:

XPRSprobException - in case of error.

getPrimalRay
```
public boolean getPrimalRay(double[] ray)
                     throws XPRSprobException
```
Get primal ray.

Parameters:

ray - where to store the ray's coefficients.

Returns:

true if a ray is available, false otherwise.

Throws:

XPRSprobException - in case of error.

getDualRay
```
public boolean getDualRay(double[] ray)
                   throws XPRSprobException
```
Get dual ray.

Parameters:

ray - where to store the ray's coefficients.

Returns:

true if a ray is available, false otherwise.

Throws:

XPRSprobException - in case of error.

getBasisVal
```
public XPRSprob.BasisValue getBasisVal(int row,
                                       int col)
                                throws XPRSprobException
```
Get basis status for a column or row.

Parameters:

row - Row index to get the row basis status for.

col - Column index to get the column basis status for.

Returns:

queried basis status.

Throws:

XPRSprobException - in case of error.

See Also:

getRowBasisVal(int), getColBasisVal(int)

getRowBasisVal
```
public int getRowBasisVal(int row)
                   throws XPRSprobException
```
Get basis status for a row.

Parameters:

row - Row index.

Returns:

basis status for row.

Throws:

XPRSprobException

getColBasisVal
```
public int getColBasisVal(int col)
                   throws XPRSprobException
```
Get basis status for a column.

Parameters:

col - Column index.

Returns:

basis status for col.

Throws:

XPRSprobException

getCutList
```
public XPRScut[] getCutList(int cuttype,
                            int interp)
                     throws XPRSprobException
```
Retrieves a list of cut pointers for the cuts active at the current node.

Parameters:

cuttype - User defined type of the cuts to be returned.

interp - Way in which the cut type is interpreted

Returns:

the queried cuts.

Throws:

XPRSprobException - in case of error.

calcObjective
```
public double calcObjective(double[] solution)
                     throws XPRSprobException
```
Calculate objective value for a given solution.

Parameters:

solution - The solution for which to calculate the objective value.

Returns:

The objective value for solution.

Throws:

XPRSprobException - in case of error.

calcSolInfo
```
public double calcSolInfo(double[] solution,
                          double[] dual,
                          int property)
                   throws XPRSprobException
```
Calculate solution information.

Parameters:

solution - Primal solution.

dual - Dual solution.

property - What to compute.

Returns:

the computed value.

Throws:

XPRSprobException - in case of error.

getQRowQMatrixTriplets
```
public XPRSprob.MatrixTriplets getQRowQMatrixTriplets(int row)
                                               throws XPRSprobException
```
Get quadratic row.

Parameters:

row - Row index.

Returns:

the quadratic matrix for row.

Throws:

XPRSprobException - in case of error.

getQRowIndices
```
public int[] getQRowIndices()
                     throws XPRSprobException
```
Get quadratic rows.

Returns:

indices of rows with quadratic terms.

Throws:

XPRSprobException - in case of error.

refineMipSol
```
public int refineMipSol(int options,
                        java.lang.String flags,
                        double[] solution,
                        double[] refined)
                 throws XPRSprobException
```
Refine a MIP solution.

Parameters:

options - Refinement options.

flags - Flags passed to any optimization calls during refinement.

solution - The solution to refine.

refined - Where to store the refined solution (if found).

Returns:

the refinement status.

Throws:

XPRSprobException - in case of error.

getCutSlack
```
public double getCutSlack(XPRScut cut)
                   throws XPRSprobException
```
Get slack for a cut.

Parameters:

cut - The cut.

Returns:

the slack for cut.

Throws:

XPRSprobException - in case of error.

getLpSolVal
```
public XPRSprob.SolVal getLpSolVal(int col,
                                   int row)
                            throws XPRSprobException
```
Get LP solution value.

Parameters:

col - Column to query.

row - Row to query.

Returns:

solution value for the queried row/column.

Throws:

XPRSprobException - in case of error.

getMipSolVal
```
public XPRSprob.SolVal getMipSolVal(int col,
                                    int row)
                             throws XPRSprobException
```
Get MIP solution value.

Parameters:

col - Column to query.

row - Row to query.

Returns:

solution value for the queried row/column.

Throws:

XPRSprobException - in case of error.

chgLB
```
public void chgLB(int j,
                  double lb)
           throws XPRSprobException
```
Change the lower bound of a single variable.

Parameters:

j - The variable to change.

lb - The new lower bound.

Throws:

XPRSprobException

See Also:

chgBounds(int, int[], byte[], double[])

chgUB
```
public void chgUB(int j,
                  double ub)
           throws XPRSprobException
```
Change the upper bound of a single variable.

Parameters:

j - The variable to change.

ub - The new upper bound.

Throws:

XPRSprobException

See Also:

chgBounds(int, int[], byte[], double[])

chgBounds
```
public void chgBounds(int j,
                      double lb,
                      double ub)
               throws XPRSprobException
```
Change bounds of a single variable.

Parameters:

j - Variable to change.

lb - New lower bound.

ub - New upper bound.

Throws:

XPRSprobException

getName
```
public java.lang.String getName(int type,
                                int elt)
                         throws XPRSprobException
```
Get the name of a single element.

Parameters:

type - The type of the element.

elt - The index of the element.

Returns:

the element's name.

Throws:

XPRSprobException

See Also:

getNames(int, String[], int, int)

getRowName
```
public java.lang.String getRowName(int idx)
                            throws XPRSprobException
```
Get the name of a row.

Parameters:

idx - Row idx.

Returns:

The name of the specified row.

Throws:

XPRSprobException - in case of error.

getColumnName
```
public java.lang.String getColumnName(int idx)
                               throws XPRSprobException
```
Get the name of a column.

Parameters:

idx - Column idx.

Returns:

The name of the specified column.

Throws:

XPRSprobException - in case of error.

getSetName
```
public java.lang.String getSetName(int idx)
                            throws XPRSprobException
```
Get the name of a set (SOS).

Parameters:

idx - Set idx.

Returns:

The name of the specified set.

Throws:

XPRSprobException - in case of error.

getPWLName
```
public java.lang.String getPWLName(int idx)
                            throws XPRSprobException
```
Get the name of a PWL constrant.

Parameters:

idx - PWL constraint idx.

Returns:

The name of the specified PWL constraint.

Throws:

XPRSprobException - in case of error.

getGenConsName
```
public java.lang.String getGenConsName(int idx)
                                throws XPRSprobException
```
Get the name of a general constraint.

Parameters:

idx - General constraint idx.

Returns:

The name of the specified general constraint.

Throws:

XPRSprobException - in case of error.

loadLp
```
public void loadLp()
            throws XPRSprobException
```
Load this instance with an empty LP. The problem name will be set to the empty string. This is a shortcut for loadLp("").

Throws:

XPRSprobException - if empty model cannot be loaded.

See Also:

loadLp(String), loadLp(String, int, int, byte[], double[], double[], double[], int[], int[], int[], double[], double[], double[])

loadLp
```
public void loadLp(java.lang.String probname)
            throws XPRSprobException
```
Load this instance with an empty LP. This is a shortcut for loadLp(probname, 0, 0, null, null, null, null, null, null, null, null, null, null).

Parameters:

probname - The new problem name.

Throws:

XPRSprobException - if empty model cannot be loaded.

See Also:

loadLp(), loadLp(String, int, int, byte[], double[], double[], double[], int[], int[], int[], double[], double[], double[])

addCol
```
public int addCol(double obj,
                  double lb,
                  double ub,
                  char type,
                  int[] rowind,
                  double[] rowval,
                  java.lang.String name)
           throws XPRSprobException
```
Add a single column to the model.

Parameters:

obj - The objective coefficient for the new column.

lb - The lower bound for the new column.

ub - The upper bound for the new column.

type - The type for the new column.

rowind - Array of row indices for the non-zeros for the new column. This can be null. If not null then it must have the same length as rowval and rowval[k] must be the non-zero coefficient of the new column in row rowind[k].

rowval - Array of row values for the non-zeros for the new column. This can be null. If not null then it must have the same length as rowind and rowval[k] must be the non-zero coefficient of the new column in row rowind[k].

name - The name of the new column. This can be null.

Returns:

The index of the newly created column.

Throws:

java.lang.IllegalArgumentException - if rowind and rowval have different lengths.

XPRSprobException - if column cannot be added.

See Also:

addCols(int, int, double[], int[], int[], double[], double[], double[])

addCol
```
public int addCol(double obj,
                  double lb,
                  double ub,
                  char type,
                  int[] rowind,
                  double[] rowval)
           throws XPRSprobException
```
Add a single column to this problem. This is a shortcut for addCol(obj, lb, ub, type, rowind, rowval, null);.

Parameters:

obj - The objective coefficient for the new column.

lb - The lower bound for the new column.

ub - The upper bound for the new column.

type - The type for the new column.

rowind - Array of row indices for the non-zeros for the new column. This can be null. If not null then it must have the same length as rowval and rowval[k] must be the non-zero coefficient of the new column in row rowind[k].

rowval - Array of row values for the non-zeros for the new column. This can be null. If not null then it must have the same length as rowind and rowval[k] must be the non-zero coefficient of the new column in row rowind[k].

Returns:

The index of the newly created column.

Throws:

java.lang.IllegalArgumentException - if rowind and rowval have different lengths.

XPRSprobException - if column cannot be added.

See Also:

addCol(double, double, double, char, int[], double[], String)

addCol
```
public int addCol(double obj,
                  double lb,
                  double ub)
           throws XPRSprobException
```
Add a single column to this problem. This is a shortcut for addCol(obj, lb, ub, 'C', null, null, null);.

Parameters:

obj - The objective coefficient for the new column.

lb - The lower bound for the new column.

ub - The upper bound for the new column.

Returns:

The index of the newly created column.

Throws:

java.lang.IllegalArgumentException - if rowind and rowval have different lengths.

XPRSprobException - if column cannot be added.

See Also:

addCol(double, double, double, char, int[], double[], String)

addCol
```
public int addCol(double obj,
                  double lb,
                  double ub,
                  char type)
           throws XPRSprobException
```
Add a single column to this problem. This is a shortcut for addCol(obj, lb, ub, type, null, null, null);.

Parameters:

obj - The objective coefficient for the new column.

lb - The lower bound for the new column.

ub - The upper bound for the new column.

type - The type for the new column.

Returns:

The index of the newly created column.

Throws:

java.lang.IllegalArgumentException - if rowind and rowval have different lengths.

XPRSprobException - if column cannot be added.

See Also:

addCol(double, double, double, char, int[], double[], String)

addCol
```
public int addCol(double obj,
                  double lb,
                  double ub,
                  java.lang.String name)
           throws XPRSprobException
```
Add a single column to this problem. This is a shortcut for addCol(obj, lb, ub, 'C', null, null, name);.

Parameters:

obj - The objective coefficient for the new column.

lb - The lower bound for the new column.

ub - The upper bound for the new column.

name - The name of the new column. This can be null.

Returns:

The index of the newly created column.

Throws:

java.lang.IllegalArgumentException - if rowind and rowval have different lengths.

XPRSprobException - if column cannot be added.

See Also:

addCol(double, double, double, char, int[], double[], String)

addCol
```
public int addCol(double obj,
                  double lb,
                  double ub,
                  char type,
                  java.lang.String name)
           throws XPRSprobException
```
Add a single column to this problem. This is a shortcut for addCol(obj, lb, ub, type, null, null, name);.

Parameters:

obj - The objective coefficient for the new column.

lb - The lower bound for the new column.

ub - The upper bound for the new column.

type - The type for the new column.

name - The name of the new column. This can be null.

Returns:

The index of the newly created column.

Throws:

java.lang.IllegalArgumentException - if rowind and rowval have different lengths.

XPRSprobException - if column cannot be added.

See Also:

addCol(double, double, double, char, int[], double[], String)

addRow
```
public int addRow(int[] colind,
                  double[] colval,
                  char rowtype,
                  java.lang.Double rhs,
                  java.lang.Double rng,
                  java.lang.String name)
           throws XPRSprobException
```
Add a single row to the problem.

Parameters:

colind - Array of column indices for the non-zeros for the new row. This can be null. If not null then it must have the same length as colval and colval[k] must be the non-zero coefficient in the new row for column colind[k].

colval - Array of column values for the non-zeros for the new row. This can be null. If not null then it must have the same length as colind and colval[k] must be the non-zero coefficient in the new row for column colind[k].

rowtype - The type of the new row.

rhs - The right-hand side for the new row. If this is null then 0 (zero) is used.

rng - The range value for the new row. This is ignored if it is null.

name - The name of the new row. This can be null.

Returns:

The index of the newly created row.

Throws:

java.lang.IllegalArgumentException - if colind and colval have different lengths.

XPRSprobException - if row cannot be added.

See Also:

addRows(int, int, byte[], double[], double[], int[], int[], double[])

addRow
```
public int addRow(int[] colind,
                  double[] colval,
                  char rowtype,
                  double rhs,
                  java.lang.String name)
           throws XPRSprobException
```
Add a single row to the problem. This is a short cut for addRow(colind, colval, rowtype, rhs, null, name).

Parameters:

colind - Array of column indices for the non-zeros for the new row. This can be null. If not null then it must have the same length as colval and colval[k] must be the non-zero coefficient in the new row for column colind[k].

colval - Array of column values for the non-zeros for the new row. This can be null. If not null then it must have the same length as colind and colval[k] must be the non-zero coefficient in the new row for column colind[k].

rowtype - The type of the new row.

rhs - The right-hand side for the new row. If this is null then 0 (zero) is used.

name - The name of the new row. This can be null.

Returns:

The index of the newly created row.

Throws:

java.lang.IllegalArgumentException - if colind and colval have different lengths.

XPRSprobException - if row cannot be added.

See Also:

addRow(int[], double[], char, Double, Double, String)

addRow
```
public int addRow(int[] colind,
                  double[] colval,
                  char rowtype,
                  double rhs)
           throws XPRSprobException
```
Add a single row to the problem. This is a short cut for addRow(colind, colval, rowtype, rhs, null, null).

Parameters:

colind - Array of column indices for the non-zeros for the new row. This can be null. If not null then it must have the same length as colval and colval[k] must be the non-zero coefficient in the new row for column colind[k].

colval - Array of column values for the non-zeros for the new row. This can be null. If not null then it must have the same length as colind and colval[k] must be the non-zero coefficient in the new row for column colind[k].

rowtype - The type of the new row.

rhs - The right-hand side for the new row. If this is null then 0 (zero) is used.

Returns:

The index of the newly created row.

Throws:

java.lang.IllegalArgumentException - if colind and colval have different lengths.

XPRSprobException - if row cannot be added.

See Also:

addRow(int[], double[], char, Double, Double, String)

addRow
```
public int addRow(XPRSprob.RowInfo row)
           throws XPRSprobException
```
Add a single row to the problem.

Parameters:

row - The row to add.

Throws:

XPRSprobException

See Also:

addRow(int[], double[], char, Double, Double, String)

addRow
```
public int addRow(XPRSprob.RowInfo row,
                  java.lang.String name)
           throws XPRSprobException
```
Add a single row to the problem.

Parameters:

row - The row to add.

name - The name for the new row.

Throws:

XPRSprobException

See Also:

addRow(int[], double[], char, Double, Double, String)

addCut
```
public void addCut(int cuttype,
                   int[] colind,
                   double[] colval,
                   char rowtype,
                   double rhs)
            throws XPRSprobException
```
Add a single cut to the problem.

Parameters:

cuttype - The type of the cut. This can be any number chosen by the user to identify their cuts.

colind - Array of column indices for the non-zeros for the new cut. This can be null. If not null then it must have the same length as colval and colval[k] must be the non-zero coefficient in the new cut for column colind[k].

colval - Array of column values for the non-zeros for the new cut. This can be null. If not null then it must have the same length as colind and colval[k] must be the non-zero coefficient in the new cut for column colind[k].

rowtype - The row type of the new cut (less-or-equal, equal, greater-or-equal). The type is specified as 'L', 'E', or 'G'.

rhs - The right-hand side for the new cut.

Throws:

java.lang.NullPointerException - if colind or colval are null.

java.lang.IllegalArgumentException - if colind and colval have different lengths.

XPRSprobException - if cut cannot be added.

See Also:

addCuts(int, int[], byte[], double[], int[], int[], double[])

addCut
```
public void addCut(int cuttype,
                   XPRSprob.RowInfo cut)
            throws XPRSprobException
```
Add a single cut to the problem.

Parameters:

cuttype - The type of the new cut.

cut - The cut to add.

Throws:

XPRSprobException

See Also:

addCut(int, int[], double[], char, double)

presolveRow
```
public XPRSprob.RowInfo presolveRow(int[] ind,
                                    double[] val,
                                    char type,
                                    double rhs)
                             throws XPRSprobException
```
Presolve a row. The function transforms a row that is given in terms of the original model to a row that is given in terms of the presolved model.

Parameters:

ind - Non-zero column indices.

val - Non-zero values of the row.

type - Type of the row.

rhs - Right-hand side of the row.

Returns:

null if the row could not be presolved, the presolved row otherwise.

Throws:

java.lang.NullPointerException - if ind or val are null.

java.lang.IllegalArgumentException - if ind and val have different lengths.

XPRSprobException

See Also:

presolveRow(char, int, int[], double[], double, int, IntHolder, int[], double[], DoubleHolder, IntHolder status)

copyProb

public void copyProb(XPRSprob src)
              throws XPRSprobException

Copy another problem over this one

Throws:: XPRSprobException

setProbname
```
public void setProbname(java.lang.String probname)
                 throws XPRSprobException
```
Sets the current default problem name. This command is rarely used.

Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing the problem name.

Throws:

XPRSprobException

setLogFile
```
public void setLogFile(java.lang.String filename)
                throws XPRSprobException
```
This directs all Optimizer output to a log file.

Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name to which all logging output should be written. If set to null, redirection of the output will stop and all screen output will be turned back on (except for library users where screen output is always turned off).

Throws:

XPRSprobException

setDefaultControl
```
public void setDefaultControl(int control)
                       throws XPRSprobException
```
Sets a single control to its default value.

Parameters:

control - Integer, double or string control parameter whose default value is to be set.

Throws:

XPRSprobException

setDefaults
```
public void setDefaults()
                 throws XPRSprobException
```
Sets all controls to their default values. Must be called before the problem is read or loaded by readProb, loadGlobal, loadLP, loadQGlobal, loadQP.

Throws:

XPRSprobException

readProb
```
public void readProb(java.lang.String filename,
                     java.lang.String flags)
              throws XPRSprobException
```
Reads an (X)MPS or LP format matrix from file.
Parameters:

filename - The path and file name from which the problem is to be read. Limited to MAXPROBNAMELENGTH characters. If omitted (console users only), the default problem_name is used with various extensions - see below.
flags - Flags to be passed:
- l: only filename.lp is searched for;
- v: use the provided filename verbatim, without appending the .mps, .mat or .lp extension;
- z: read a compressed input file.
Throws:

XPRSprobException

readProb
```
public void readProb(java.lang.String filename)
              throws XPRSprobException
```
Convenience wrapper for readProb(String, String).

Throws:

XPRSprobException

See Also:

readProb(String, String)

loadLp
```
public void loadLp(java.lang.String probname,
                   int ncols,
                   int nrows,
                   byte[] rowtype,
                   double[] rhs,
                   double[] rng,
                   double[] objcoef,
                   int[] start,
                   int[] collen,
                   int[] rowind,
                   double[] rowcoef,
                   double[] lb,
                   double[] ub)
            throws XPRSprobException
```
Enables the user to pass a matrix directly to the Optimizer, rather than reading the matrix from a file.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a names for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if not required. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null, the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if not required. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

Throws:

XPRSprobException

loadLp
```
public void loadLp(java.lang.String probname,
                   int ncols,
                   int nrows,
                   byte[] rowtype,
                   double[] rhs,
                   double[] rng,
                   double[] objcoef,
                   long[] start,
                   int[] collen,
                   int[] rowind,
                   double[] rowcoef,
                   double[] lb,
                   double[] ub)
            throws XPRSprobException
```
Enables the user to pass a matrix directly to the Optimizer, rather than reading the matrix from a file.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a names for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if not required. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null, the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if not required. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

Throws:

XPRSprobException

loadQP
```
public void loadQP(java.lang.String probname,
                   int ncols,
                   int nrows,
                   byte[] rowtype,
                   double[] rhs,
                   double[] rng,
                   double[] objcoef,
                   int[] start,
                   int[] collen,
                   int[] rowind,
                   double[] rowcoef,
                   double[] lb,
                   double[] ub,
                   int nobjqcoefs,
                   int[] objqcol1,
                   int[] objqcol2,
                   double[] objqcoef)
            throws XPRSprobException
```
Used to load a quadratic problem into the Optimizer data structure. Such a problem may have quadratic terms in its objective function, although not in its constraints.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a names for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if there are no ranged constraints. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if all elements are contiguous and start[ncols] contains the offset where the elements for column ncols+1 would start. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

Throws:

XPRSprobException

loadQP
```
public void loadQP(java.lang.String probname,
                   int ncols,
                   int nrows,
                   byte[] rowtype,
                   double[] rhs,
                   double[] rng,
                   double[] objcoef,
                   long[] start,
                   int[] collen,
                   int[] rowind,
                   double[] rowcoef,
                   double[] lb,
                   double[] ub,
                   long nobjqcoefs,
                   int[] objqcol1,
                   int[] objqcol2,
                   double[] objqcoef)
            throws XPRSprobException
```
Used to load a quadratic problem into the Optimizer data structure. Such a problem may have quadratic terms in its objective function, although not in its constraints.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a names for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if there are no ranged constraints. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if all elements are contiguous and start[ncols] contains the offset where the elements for column ncols+1 would start. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

Throws:

XPRSprobException

loadQGlobal
```
public void loadQGlobal(java.lang.String probname,
                        int ncols,
                        int nrows,
                        byte[] rowtype,
                        double[] rhs,
                        double[] rng,
                        double[] objcoef,
                        int[] start,
                        int[] collen,
                        int[] rowind,
                        double[] rowcoef,
                        double[] lb,
                        double[] ub,
                        int nobjqcoefs,
                        int[] objqcol1,
                        int[] objqcol2,
                        double[] objqcoef,
                        int nentities,
                        int nsets,
                        byte[] coltype,
                        int[] entind,
                        double[] limit,
                        byte[] settype,
                        int[] setstart,
                        int[] setind,
                        double[] refval)
                 throws XPRSprobException
```
Used to load a global problem with quadratic objective coefficients in to the Optimizer data structures. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row type:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. The values in the range array will only be read for R type rows. The entries for other type rows will be ignored. May be null if not required. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if not required. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer arrays containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, then the length of rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

nentities - Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.

nsets - Number of SOS1 and SOS2 sets.
coltype - Character array of length nentities containing the entity types:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integers.
entind - Integer array of length nentities containing the column indices of the global entities.

limit - Double array of length nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored). May be null if not required.
settype - Character array of length nsets containing:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
May be null if not required.
setstart - Integer array containing the offsets in the setind and refval arrays indicating the start of the sets. This array is of length nsets+1, the last member containing the offset where set nsets+1 would start. May be null if not required.

setind - Integer array of length setstart[nsets]-1 containing the columns in each set. May be null if not required.

refval - Double array of length setstart[nsets]-1 containing the reference row entries for each member of the sets. May be null if not required.

Throws:

XPRSprobException

loadQGlobal
```
public void loadQGlobal(java.lang.String probname,
                        int ncols,
                        int nrows,
                        byte[] rowtype,
                        double[] rhs,
                        double[] rng,
                        double[] objcoef,
                        long[] start,
                        int[] collen,
                        int[] rowind,
                        double[] rowcoef,
                        double[] lb,
                        double[] ub,
                        long nobjqcoefs,
                        int[] objqcol1,
                        int[] objqcol2,
                        double[] objqcoef,
                        int nentities,
                        int nsets,
                        byte[] coltype,
                        int[] entind,
                        double[] limit,
                        byte[] settype,
                        long[] setstart,
                        int[] setind,
                        double[] refval)
                 throws XPRSprobException
```
Used to load a global problem with quadratic objective coefficients in to the Optimizer data structures. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row type:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. The values in the range array will only be read for R type rows. The entries for other type rows will be ignored. May be null if not required. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if not required. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer arrays containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, then the length of rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

nentities - Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.

nsets - Number of SOS1 and SOS2 sets.
coltype - Character array of length nentities containing the entity types:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integers.
entind - Integer array of length nentities containing the column indices of the global entities.

limit - Double array of length nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored). May be null if not required.
settype - Character array of length nsets containing:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
May be null if not required.
setstart - Integer array containing the offsets in the setind and refval arrays indicating the start of the sets. This array is of length nsets+1, the last member containing the offset where set nsets+1 would start. May be null if not required.

setind - Integer array of length setstart[nsets]-1 containing the columns in each set. May be null if not required.

refval - Double array of length setstart[nsets]-1 containing the reference row entries for each member of the sets. May be null if not required.

Throws:

XPRSprobException

fixGlobals
```
public void fixGlobals(int options)
                throws XPRSprobException
```
Fixes all the global entities to the values of the last found MIP solution. This is useful for finding the reduced costs for the continuous variables after the global variables have been fixed to their optimal values.
Parameters:
options - Options how to fix the globals.
- 0: If all global entities should be rounded to the nearest discrete value in the solution before being fixed.
- 1: If piecewise linear and general constraints should be kept in the problem with only the non-convex decisions (i.e. which part of a non-convex piecewise linear function or which variable attains a maximum) fixed. Otherwise all variables appearing in piecewise linear or general constraints will be fixed.
Throws:

XPRSprobException

loadModelCuts
```
public void loadModelCuts(int nrows,
                          int[] rowind)
                   throws XPRSprobException
```
Specifies that a set of rows in the matrix will be treated as model cuts.

Parameters:

nrows - The number of model cuts.

rowind - An array of row indices to be treated as cuts.

Throws:

XPRSprobException

loadDelayedRows
```
public void loadDelayedRows(int nrows,
                            int[] rowind)
                     throws XPRSprobException
```
Specifies that a set of rows in the matrix will be treated as delayed rows during a global search. These are rows that must be satisfied for any integer solution, but will not be loaded into the active set of constraints until required.

Parameters:

nrows - The number of delayed rows.

rowind - An array of row indices to treat as delayed rows.

Throws:

XPRSprobException

loadDirs
```
public void loadDirs(int ndirs,
                     int[] colind,
                     int[] priority,
                     byte[] dir,
                     double[] uppseudo,
                     double[] downpseudo)
              throws XPRSprobException
```
Loads directives into the matrix.
Parameters:

ndirs - Number of directives.

colind - Integer array of length ndirs containing the column numbers. A negative value indicates a set number (the first set being -1, the second -2, and so on).

priority - Integer array of length ndirs containing the priorities for the columns or sets. Priorities must be between 0 and 1000, where columns/sets with smallest priority will be branched on first. May be null if not required.
dir - Character array of length ndirs specifying the branching direction for each column or set:
- U: the entity is to be forced up;
- D: the entity is to be forced down;
- N: not specified.
May be null if not required.
uppseudo - Double array of length ndirs containing the up pseudo costs for the columns or sets. May be null if not required.

downpseudo - Double array of length ndirs containing the down pseudo costs for the columns or sets. May be null if not required.

Throws:

XPRSprobException

loadBranchDirs
```
public void loadBranchDirs(int ncols,
                           int[] colind,
                           int[] dir)
                    throws XPRSprobException
```
Loads directives into the current problem to specify which global entities the Optimizer should continue to branch on when a node solution is global feasible.

Parameters:

ncols - Number of directives.

colind - Integer array of length ncols containing the column numbers. A negative value indicates a set number (the first set being -1, the second -2, and so on).

dir - Integer array of length ncols containing either 0 or 1 for the entities given in colind. Entities for which dir is set to 1 will be branched on until fixed before a global feasible solution is returned. If dir is null, the branching directive will be set for all entities in colind.

Throws:

XPRSprobException

loadBranchDirs
```
public void loadBranchDirs(int x,
                           int value)
                    throws XPRSprobException
```
Convenience wrapper for loadBranchDirs(int, int[], int[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

loadBranchDirs(int, int[], int[])

loadPresolveDirs
```
public void loadPresolveDirs(int ndirs,
                             int[] colind,
                             int[] priority,
                             byte[] dir,
                             double[] uppseudo,
                             double[] downpseudo)
                      throws XPRSprobException
```
Loads directives into the presolved matrix.
Parameters:

ndirs - Number of directives.

colind - Integer array of length ndirs containing the column numbers. A negative value indicates a set number ( -1 being the first set, -2 the second, and so on).

priority - Integer array of length ndirs containing the priorities for the columns or sets. May be null if not required.
dir - Character array of length ndirs specifying the branching direction for each column or set:
- U: the entity is to be forced up;
- D: the entity is to be forced down;
- N: not specified.
May be null if not required.
uppseudo - Double array of length ndirs containing the up pseudo costs for the columns or sets. May be null if not required.

downpseudo - Double array of length ndirs containing the down pseudo costs for the columns or sets. May be null if not required.

Throws:

XPRSprobException

loadGlobal
```
public void loadGlobal(java.lang.String probname,
                       int ncols,
                       int nrows,
                       byte[] rowtype,
                       double[] rhs,
                       double[] rng,
                       double[] objcoef,
                       int[] start,
                       int[] collen,
                       int[] rowind,
                       double[] rowcoef,
                       double[] lb,
                       double[] ub,
                       int nentities,
                       int nsets,
                       byte[] coltype,
                       int[] entind,
                       double[] limit,
                       byte[] settype,
                       int[] setstart,
                       int[] setind,
                       double[] refval)
                throws XPRSprobException
```
Used to load a global problem in to the Optimizer data structures. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix not (including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if not required. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null, the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if not required. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer arrays containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, then the length of rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nentities - Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.

nsets - Number of SOS1 and SOS2 sets.
coltype - Character array of length nentities containing the entity types:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integer variables.
entind - Integer array of length nentities containing the column indices of the global entities.

limit - Double array of length nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored). May be null if not required.
settype - Character array of length nsets containing the set types:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
May be null if not required.
setstart - Integer array containing the offsets in the setind and refval arrays indicating the start of the sets. This array is of length nsets+1, the last member containing the offset where set nsets+1 would start. May be null if not required.

setind - Integer array of length setstart[nsets]-1 containing the columns in each set. May be null if not required.

refval - Double array of length setstart[nsets]-1 containing the reference row entries for each member of the sets. May be null if not required.

Throws:

XPRSprobException

loadGlobal
```
public void loadGlobal(java.lang.String probname,
                       int ncols,
                       int nrows,
                       byte[] rowtype,
                       double[] rhs,
                       double[] rng,
                       double[] objcoef,
                       long[] start,
                       int[] collen,
                       int[] rowind,
                       double[] rowcoef,
                       double[] lb,
                       double[] ub,
                       int nentities,
                       int nsets,
                       byte[] coltype,
                       int[] entind,
                       double[] limit,
                       byte[] settype,
                       long[] setstart,
                       int[] setind,
                       double[] refval)
                throws XPRSprobException
```
Used to load a global problem in to the Optimizer data structures. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix not (including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if not required. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null, the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if not required. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer arrays containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, then the length of rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nentities - Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.

nsets - Number of SOS1 and SOS2 sets.
coltype - Character array of length nentities containing the entity types:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integer variables.
entind - Integer array of length nentities containing the column indices of the global entities.

limit - Double array of length nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored). May be null if not required.
settype - Character array of length nsets containing the set types:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
May be null if not required.
setstart - Integer array containing the offsets in the setind and refval arrays indicating the start of the sets. This array is of length nsets+1, the last member containing the offset where set nsets+1 would start. May be null if not required.

setind - Integer array of length setstart[nsets]-1 containing the columns in each set. May be null if not required.

refval - Double array of length setstart[nsets]-1 containing the reference row entries for each member of the sets. May be null if not required.

Throws:

XPRSprobException

scale
```
public void scale(int[] rowscale,
                  int[] colscale)
           throws XPRSprobException
```
Re-scales the current matrix.

Parameters:

rowscale - Integer array of size ROWS containing the powers of 2 with which to scale the rows, or null if not required.

colscale - Integer array of size COLS containing the powers of 2 with which to scale the columns, or null if not required.

Throws:

XPRSprobException

readDirs
```
public void readDirs(java.lang.String filename)
              throws XPRSprobException
```
Reads a directives file to help direct the global search.

Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name from which the directives are to be read. If omitted (or null), the default problem_name is used with a .dir extension.

Throws:

XPRSprobException

readDirs
```
public void readDirs()
              throws XPRSprobException
```
Convenience wrapper for readDirs(String).

Throws:

XPRSprobException

See Also:

readDirs(String)

writeDirs
```
public void writeDirs(java.lang.String filename)
               throws XPRSprobException
```
Writes the global search directives from the current problem to a directives file.

Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name to which the directives should be written. If omitted (or null), the default problem_name is used with a .dir extension.

Throws:

XPRSprobException

writeDirs
```
public void writeDirs()
               throws XPRSprobException
```
Convenience wrapper for writeDirs(String).

Throws:

XPRSprobException

See Also:

writeDirs(String)

setIndicators
```
public void setIndicators(int nrows,
                          int[] rowind,
                          int[] colind,
                          int[] complement)
                   throws XPRSprobException
```
Specifies that a set of rows in the matrix will be treated as indicator constraints, during a global search. An indicator constraint is made of a condition and a linear constraint. The condition is of the type " bin = value", where bin is a binary variable and value is either 0 or 1. The linear constraint is any linear row. During global search, a row configured as an indicator constraint is enforced only when condition holds, that is only if the indicator variable bin has the specified value.
Parameters:

nrows - The number of indicator constraints.

rowind - Integer array of length nrows containing the indices of the rows that define the linear constraint part for the indicator constraints.

colind - Integer array of length nrows containing the column indices of the indicator variables.
complement - Integer array of length nrows with the complement flags:
- 0: not an indicator constraint (in this case the corresponding entry in the colind array is ignored);
- 1: for indicator constraints with condition "bin = 1";
- -1: for indicator constraints with condition "bin = 0";
Throws:

XPRSprobException

addPwlCons
```
public void addPwlCons(int npwls,
                       int npoints,
                       int[] colind,
                       int[] resultant,
                       int[] start,
                       double[] xval,
                       double[] yval)
                throws XPRSprobException
```
Adds one or more piecewise linear constraints to the problem. Each piecewise linear constraint y = f(x) consists of an (input) column x, a (different) resultant (output column) y and a piecewise linear function f. The piecewise linear function f is described by at least two breakpoints, which are given as combinations of x- and y-values. Discontinuous piecewise linear functions are supported, in this case both the left and right limit at a given point need to be entered as breakpoints. To differentiate between left and right limit, the breakpoints need to be given as a list with non-decreasing x-values.

Parameters:

npwls - The number of piecewise linear constraints to add.

npoints - The total number of breakpoints of all piecewise linear constraints that should be added.

colind - Integer array of length npwls containing the indices of the input variables x of the piecewise linear functions.

resultant - Integer array of length npwls containing the indices of the output variables y of the piecewise linear functions.

start - Integer array of length npwls containing the start index of each piecewise linear constraint in the xval and yval arrays.

xval - Double array of length npoints containing the x-values of the breakpoints.

yval - Double array of length npoints containing the y-values of the breakpoints.

Throws:

XPRSprobException

addPwlCons
```
public void addPwlCons(int npwls,
                       long npoints,
                       int[] colind,
                       int[] resultant,
                       long[] start,
                       double[] xval,
                       double[] yval)
                throws XPRSprobException
```
Adds one or more piecewise linear constraints to the problem. Each piecewise linear constraint y = f(x) consists of an (input) column x, a (different) resultant (output column) y and a piecewise linear function f. The piecewise linear function f is described by at least two breakpoints, which are given as combinations of x- and y-values. Discontinuous piecewise linear functions are supported, in this case both the left and right limit at a given point need to be entered as breakpoints. To differentiate between left and right limit, the breakpoints need to be given as a list with non-decreasing x-values.

Parameters:

npwls - The number of piecewise linear constraints to add.

npoints - The total number of breakpoints of all piecewise linear constraints that should be added.

colind - Integer array of length npwls containing the indices of the input variables x of the piecewise linear functions.

resultant - Integer array of length npwls containing the indices of the output variables y of the piecewise linear functions.

start - Integer array of length npwls containing the start index of each piecewise linear constraint in the xval and yval arrays.

xval - Double array of length npoints containing the x-values of the breakpoints.

yval - Double array of length npoints containing the y-values of the breakpoints.

Throws:

XPRSprobException

getPwlCons
```
public void getPwlCons(int[] colind,
                       int[] resultant,
                       int[] start,
                       double[] xval,
                       double[] yval,
                       int maxpoints,
                       IntHolder p_npoints,
                       int first,
                       int last)
                throws XPRSprobException
```
Returns the piecewise linear constraints y = f(x) in a given range.

Parameters:

colind - Integer array which will be filled with the indices of the input variables x. It must be of length at least last-first+1. May be null if not required.

resultant - Integer array which will be filled with the indices of the output variables y. It must be of length at least last-first+1. May be null if not required.

start - Integer array which will be filled with the start indices of the different constraints in the breakpoint arrays. It must be of length at least last-first+2. The x-values of the breakpoints of piecewise linear constraint i < last will be given in xval[start[i]] to xval[start[i+1]]. May be null if not required.

xval - Double array of length maxpoints which will be filled with the x-values of the breakpoints. May be null if not required.

yval - Double array of length maxpoints which will be filled with the y-values of the breakpoints. May be null if not required.

maxpoints - Maximum number of breakpoints to be retrieved.

p_npoints - Pointer to return the number of breakpoints in the selected constraints. If the number of breakpoints is greater than maxpoints, then only maxpoints elements will be returned in the xval and yval arrays. May be null if not required.

first - First piecewise linear constraint in the range.

last - Last piecewise linear constraint in the range.

Throws:

XPRSprobException

getPwlCons
```
public void getPwlCons(int[] colind,
                       int[] resultant,
                       long[] start,
                       double[] xval,
                       double[] yval,
                       long maxpoints,
                       LongHolder p_npoints,
                       int first,
                       int last)
                throws XPRSprobException
```
Returns the piecewise linear constraints y = f(x) in a given range.

Parameters:

colind - Integer array which will be filled with the indices of the input variables x. It must be of length at least last-first+1. May be null if not required.

resultant - Integer array which will be filled with the indices of the output variables y. It must be of length at least last-first+1. May be null if not required.

start - Integer array which will be filled with the start indices of the different constraints in the breakpoint arrays. It must be of length at least last-first+2. The x-values of the breakpoints of piecewise linear constraint i < last will be given in xval[start[i]] to xval[start[i+1]]. May be null if not required.

xval - Double array of length maxpoints which will be filled with the x-values of the breakpoints. May be null if not required.

yval - Double array of length maxpoints which will be filled with the y-values of the breakpoints. May be null if not required.

maxpoints - Maximum number of breakpoints to be retrieved.

p_npoints - Pointer to return the number of breakpoints in the selected constraints. If the number of breakpoints is greater than maxpoints, then only maxpoints elements will be returned in the xval and yval arrays. May be null if not required.

first - First piecewise linear constraint in the range.

last - Last piecewise linear constraint in the range.

Throws:

XPRSprobException

addGenCons
```
public void addGenCons(int ncons,
                       int ncols,
                       int nvals,
                       XPRSenumerations.GenConsType[] contype,
                       int[] resultant,
                       int[] colstart,
                       int[] colind,
                       int[] valstart,
                       double[] val)
                throws XPRSprobException
```
Adds one or more general constraints to the problem. Each general constraint y = f(x1, ..., xn, c1, ..., cn) consists of one or more (input) columns xi, zero or more constant values ci and a resultant (output column) y, different from all xi. General constraints include maximum and minimum (arbitrary number of input columns of any type and arbitrary number of input values, at least one total), and and or (at least one binary input column, no constant values, binary resultant) and absolute value (exactly one input column of arbitrary type, no constant values).
Parameters:

ncons - The number of general constraints to add.

ncols - The total number of input variables in general constraints that should be added.

nvals - The total number of constant values in general constraints that should be added.
contype - Integer array of length ncons containing the types of the general constraints:
- XPRS_GENCONS_MAX (0): indicates a maximum constraint;
- XPRS_GENCONS_MIN (1): indicates a minimum constraint;
- XPRS_GENCONS_AND (2): indicates an and constraint.
- XPRS_GENCONS_OR (3): indicates an or constraint;
- XPRS_GENCONS_ABS (4): indicates an absolute value constraint.
resultant - Integer array of length ncons containing the indices of the output variables of the general constraints.

colstart - Integer array of length ncons containing the start index of each general constraint in the colind array.

colind - Integer array of length ncols containing the input variables in all general constraints.

valstart - Integer array of length ncons containing the start index of each general constraint in the val array (may be null if ncoefs = 0).

val - Double array of length nvals containing the constant values in all general constraints (may be null if ncoefs = 0).

Throws:

XPRSprobException

addGenCons
```
public void addGenCons(int ncons,
                       long ncols,
                       long nvals,
                       XPRSenumerations.GenConsType[] contype,
                       int[] resultant,
                       long[] colstart,
                       int[] colind,
                       long[] valstart,
                       double[] val)
                throws XPRSprobException
```
Adds one or more general constraints to the problem. Each general constraint y = f(x1, ..., xn, c1, ..., cn) consists of one or more (input) columns xi, zero or more constant values ci and a resultant (output column) y, different from all xi. General constraints include maximum and minimum (arbitrary number of input columns of any type and arbitrary number of input values, at least one total), and and or (at least one binary input column, no constant values, binary resultant) and absolute value (exactly one input column of arbitrary type, no constant values).
Parameters:

ncons - The number of general constraints to add.

ncols - The total number of input variables in general constraints that should be added.

nvals - The total number of constant values in general constraints that should be added.
contype - Integer array of length ncons containing the types of the general constraints:
- XPRS_GENCONS_MAX (0): indicates a maximum constraint;
- XPRS_GENCONS_MIN (1): indicates a minimum constraint;
- XPRS_GENCONS_AND (2): indicates an and constraint.
- XPRS_GENCONS_OR (3): indicates an or constraint;
- XPRS_GENCONS_ABS (4): indicates an absolute value constraint.
resultant - Integer array of length ncons containing the indices of the output variables of the general constraints.

colstart - Integer array of length ncons containing the start index of each general constraint in the colind array.

colind - Integer array of length ncols containing the input variables in all general constraints.

valstart - Integer array of length ncons containing the start index of each general constraint in the val array (may be null if ncoefs = 0).

val - Double array of length nvals containing the constant values in all general constraints (may be null if ncoefs = 0).

Throws:

XPRSprobException

getGenCons
```
public void getGenCons(XPRSenumerations.GenConsType[] contype,
                       int[] resultant,
                       int[] colstart,
                       int[] colind,
                       int maxcols,
                       IntHolder p_ncols,
                       int[] valstart,
                       double[] val,
                       int maxvals,
                       IntHolder p_nvals,
                       int first,
                       int last)
                throws XPRSprobException
```
Returns the general constraints y = f(x1, ..., xn, c1, ..., cm) in a given range.
Parameters:
contype - null if not required or an integer array of length at least last-first+1 which will be filled with the types of the general constraints:
- XPRS_GENCONS_MAX (0): indicates a maximum constraint;
- XPRS_GENCONS_MIN (1): indicates a minimum constraint;
- XPRS_GENCONS_AND (2): indicates an and constraint.
- XPRS_GENCONS_OR (3): indicates an or constraint;
- XPRS_GENCONS_ABS (4): indicates an absolute value constraint.
resultant - Integer array which will be filled with the indices of the output variables y. It must be of length at least last-first+1. May be null if not required.

colstart - Integer array of length at least last-first+2 which will be filled with the start index of each general constraint in the colind array. May be null if not required.

colind - Integer array which will be filled with the indices of the input variables xi. May be null if not required.

maxcols - Maximum number of input columns to be retrieved.

p_ncols - Pointer to return the number of input columns in the colind array. If the number of input columns is greater than maxcols, then only maxcols elements will be returned. May be null if not required.

valstart - Integer array of length at least last-first+2 which will be filled with the start index of each general constraint in the val array. May be null if not required.

val - Integer array which will be filled with the constant values ci. May be null if not required.

maxvals - Maximum number of constant values to be retrieved.

p_nvals - Pointer to return the number of constant values in the val array. If the number of constant values is greater than maxvals, then only maxvals elements will be returned.May be null if not required.

first - First general constraint in the range.

last - Last general constraint in the range.

Throws:

XPRSprobException

getGenCons
```
public void getGenCons(XPRSenumerations.GenConsType[] contype,
                       int[] resultant,
                       long[] colstart,
                       int[] colind,
                       long maxcols,
                       LongHolder p_ncols,
                       long[] valstart,
                       double[] val,
                       long maxvals,
                       LongHolder p_nvals,
                       int first,
                       int last)
                throws XPRSprobException
```
Returns the general constraints y = f(x1, ..., xn, c1, ..., cm) in a given range.
Parameters:
contype - null if not required or an integer array of length at least last-first+1 which will be filled with the types of the general constraints:
- XPRS_GENCONS_MAX (0): indicates a maximum constraint;
- XPRS_GENCONS_MIN (1): indicates a minimum constraint;
- XPRS_GENCONS_AND (2): indicates an and constraint.
- XPRS_GENCONS_OR (3): indicates an or constraint;
- XPRS_GENCONS_ABS (4): indicates an absolute value constraint.
resultant - Integer array which will be filled with the indices of the output variables y. It must be of length at least last-first+1. May be null if not required.

colstart - Integer array of length at least last-first+2 which will be filled with the start index of each general constraint in the colind array. May be null if not required.

colind - Integer array which will be filled with the indices of the input variables xi. May be null if not required.

maxcols - Maximum number of input columns to be retrieved.

p_ncols - Pointer to return the number of input columns in the colind array. If the number of input columns is greater than maxcols, then only maxcols elements will be returned. May be null if not required.

valstart - Integer array of length at least last-first+2 which will be filled with the start index of each general constraint in the val array. May be null if not required.

val - Integer array which will be filled with the constant values ci. May be null if not required.

maxvals - Maximum number of constant values to be retrieved.

p_nvals - Pointer to return the number of constant values in the val array. If the number of constant values is greater than maxvals, then only maxvals elements will be returned.May be null if not required.

first - First general constraint in the range.

last - Last general constraint in the range.

Throws:

XPRSprobException

delPwlCons
```
public void delPwlCons(int npwls,
                       int[] pwlind)
                throws XPRSprobException
```
Delete piecewise linear constraints from a problem.

Parameters:

npwls - Number of piecewise linear constraints to delete.

pwlind - An integer array of length npwls containing the piecewise linear constraints to delete.

Throws:

XPRSprobException

delGenCons
```
public void delGenCons(int ncons,
                       int[] conind)
                throws XPRSprobException
```
Delete general constraints from a problem.

Parameters:

ncons - Number of general constraints to delete.

conind - An integer array of length ncons containing the general constraints to delete.

Throws:

XPRSprobException

dumpControls
```
public void dumpControls()
                  throws XPRSprobException
```
Displays the list of controls and their current value for those controls that have been set to a non default value.

Throws:

XPRSprobException

getIndicators
```
public void getIndicators(int[] colind,
                          int[] complement,
                          int first,
                          int last)
                   throws XPRSprobException
```
Returns the indicator constraint condition (indicator variable and complement flag) associated to the rows in a given range.
Parameters:

colind - Integer array of length last-first+1 where the column indices of the indicator variables are to be placed.
complement - Integer array of length last-first+1 where the indicator complement flags will be returned:
- 0: not an indicator constraint (in this case the corresponding entry in the colind array is ignored);
- 1: for indicator constraints with condition "bin = 1";
- -1: for indicator constraints with condition "bin = 0";
first - First row in the range.

last - Last row in the range (inclusive).

Throws:

XPRSprobException

delIndicators
```
public void delIndicators(int first,
                          int last)
                   throws XPRSprobException
```
Delete indicator constraints. This turns the specified rows into normal rows (not controlled by indicator variables).

Parameters:

first - First row in the range.

last - Last row in the range (inclusive).

Throws:

XPRSprobException

minim
```
public void minim(java.lang.String flags)
           throws XPRSprobException
```
Deprecated. you should use lpOptimize(java.lang.String) or mipOptimize(java.lang.String) instead of minim/maxim/global

Throws:

XPRSprobException

minim
```
public void minim()
           throws XPRSprobException
```
Convenience wrapper for minim(String).

Throws:

XPRSprobException

See Also:

minim(String)

maxim
```
public void maxim(java.lang.String flags)
           throws XPRSprobException
```
Deprecated. you should use lpOptimize(java.lang.String) or mipOptimize(java.lang.String) instead of minim/maxim/global

Throws:

XPRSprobException

maxim
```
public void maxim()
           throws XPRSprobException
```
Convenience wrapper for maxim(String).

Throws:

XPRSprobException

See Also:

maxim(String)

lpOptimize
```
public void lpOptimize(java.lang.String flags)
                throws XPRSprobException
```
This function begins a search for the optimal continuous (LP) solution. The direction of optimization is given by OBJSENSE. The status of the problem when the function completes can be checked using LPSTATUS. Any global entities in the problem will be ignored.
Parameters:
flags - Flags to pass to lpOptimize ( LPOPTIMIZE). The default is "" or null, in which case the algorithm used is determined by the DEFAULTALG control. If the argument includes:
- b: the model will be solved using the Newton barrier method;
- p: the model will be solved using the primal simplex algorithm;
- d: the model will be solved using the dual simplex algorithm;
- n: (lower case N), the network part of the model will be identified and solved using the network simplex algorithm;
Throws:

XPRSprobException

lpOptimize
```
public void lpOptimize()
                throws XPRSprobException
```
Convenience wrapper for lpOptimize(String).

Throws:

XPRSprobException

See Also:

lpOptimize(String)

mipOptimize
```
public void mipOptimize(java.lang.String flags)
                 throws XPRSprobException
```
This function begins a global search for the optimal MIP solution. The direction of optimization is given by OBJSENSE. The status of the problem when the function completes can be checked using MIPSTATUS.
Parameters:
flags - Flags to pass to mipOptimize ( MIPOPTIMIZE), which specifies how to solve the initial continuous problem where the global entities are relaxed. If the argument includes:
- b: the initial continuous relaxation will be solved using the Newton barrier method;
- p: the initial continuous relaxation will be solved using the primal simplex algorithm;
- d: the initial continuous relaxation will be solved using the dual simplex algorithm;
- n: the network part of the initial continuous relaxation will be identified and solved using the network simplex algorithm;
- l: stop after having solved the initial continous relaxation.
Throws:

XPRSprobException

mipOptimize
```
public void mipOptimize()
                 throws XPRSprobException
```
Convenience wrapper for mipOptimize(String).

Throws:

XPRSprobException

See Also:

mipOptimize(String)

readSlxSol
```
public void readSlxSol(java.lang.String filename,
                       java.lang.String flags)
                throws XPRSprobException
```
Reads an ASCII solution file [ .slx] created by the writeSlxSol function.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name to which the solution is to be read. If omitted, the default problem_name is used with a .slx extension.
flags - Flags to pass to writeSlxSol ( WRITESLXSOL):
- l: read the solution as an LP solution in case of a MIP problem;
- m: read the solution as a solution for the MIP problem;
- a: read multiple MIP solutions from the .slx file and add them to the MIP problem;
- v: use the provided filename verbatim, without appending the .slx extension;
- z: read a compressed input file.
Throws:

XPRSprobException

readSlxSol
```
public void readSlxSol(java.lang.String filename)
                throws XPRSprobException
```
Convenience wrapper for readSlxSol(String, String).

Throws:

XPRSprobException

See Also:

readSlxSol(String, String)

readSlxSol
```
public void readSlxSol()
                throws XPRSprobException
```
Convenience wrapper for readSlxSol(String, String).

Throws:

XPRSprobException

See Also:

readSlxSol(String, String)

initGlobal
```
public void initGlobal()
                throws XPRSprobException
```
Deprecated.

Reinitializes the global tree search. By default if a global search is interrupted and called again the global search will continue from where it left off. If initGlobal is called after the first call to mipOptimize, the global search will start from the top node when mipOptimize is called again.

Throws:

XPRSprobException

alter
```
public void alter(java.lang.String filename)
           throws XPRSprobException
```
Alters or changes matrix elements, right hand sides and constraint senses in the current problem.

Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters specifying the file to be read. If omitted, the default problem_name is used with a .alt extension.

Throws:

XPRSprobException

readBasis
```
public void readBasis(java.lang.String filename,
                      java.lang.String flags)
               throws XPRSprobException
```
Instructs the Optimizer to read in a previously saved basis from a file.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name from which the basis is to be read. If omitted, the default problem_name is used with a .bss extension.
flags - Flags to pass to readBasis ( READBASIS):
- t: input a compact advanced form of the basis;
- v: use the provided filename verbatim, without appending the .bss extension;
- z: read a compressed input file.
Throws:

XPRSprobException

readBasis
```
public void readBasis(java.lang.String filename)
               throws XPRSprobException
```
Convenience wrapper for readBasis(String, String).

Throws:

XPRSprobException

See Also:

readBasis(String, String)

readBasis
```
public void readBasis()
               throws XPRSprobException
```
Convenience wrapper for readBasis(String, String).

Throws:

XPRSprobException

See Also:

readBasis(String, String)

readBinSol
```
public void readBinSol(java.lang.String filename,
                       java.lang.String flags)
                throws XPRSprobException
```
Reads a solution from a binary solution file.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name from which the solution is to be read. If omitted, the default problem_name is used with a .sol extension.
flags - Flags to pass to readBinSol ( READBINSOL):
- m: load the solution as a solution for the MIP;
- x: load the solution as a solution for the LP;
- v: use the provided filename verbatim, without appending the .sol extension;
- z: read a compressed input file.
Throws:

XPRSprobException

readBinSol
```
public void readBinSol(java.lang.String filename)
                throws XPRSprobException
```
Convenience wrapper for readBinSol(String, String).

Throws:

XPRSprobException

See Also:

readBinSol(String, String)

readBinSol
```
public void readBinSol()
                throws XPRSprobException
```
Convenience wrapper for readBinSol(String, String).

Throws:

XPRSprobException

See Also:

readBinSol(String, String)

getInfeas
```
public void getInfeas(IntHolder p_nprimalcols,
                      IntHolder p_nprimalrows,
                      IntHolder p_ndualrows,
                      IntHolder p_ndualcols,
                      int[] x,
                      int[] slack,
                      int[] duals,
                      int[] djs)
               throws XPRSprobException
```
Returns a list of infeasible primal and dual variables.

Parameters:

p_nprimalcols - Pointer to an integer where the number of primal infeasible variables is returned.

p_nprimalrows - Pointer to an integer where the number of primal infeasible rows is returned.

p_ndualrows - Pointer to an integer where the number of dual infeasible rows is returned.

p_ndualcols - Pointer to an integer where the number of dual infeasible variables is returned.

x - Integer array of length p_nprimalcols where the primal infeasible variables will be returned. May be null if not required.

slack - Integer array of length p_nprimalrows where the primal infeasible rows will be returned. May be null if not required.

duals - Integer array of length p_ndualrows where the dual infeasible rows will be returned. May be null if not required.

djs - Integer array of length p_ndualcols where the dual infeasible variables will be returned. May be null if not required.

Throws:

XPRSprobException

getScaledInfeas
```
public void getScaledInfeas(IntHolder p_nprimalcols,
                            IntHolder p_nprimalrows,
                            IntHolder p_ndualrows,
                            IntHolder p_ndualcols,
                            int[] x,
                            int[] slack,
                            int[] duals,
                            int[] djs)
                     throws XPRSprobException
```
Returns a list of scaled infeasible primal and dual variables for the original problem. If the problem is currently presolved, it is postsolved before the function returns.

Parameters:

p_nprimalcols - Number of primal infeasible variables.

p_nprimalrows - Number of primal infeasible rows.

p_ndualrows - Number of dual infeasible rows.

p_ndualcols - Number of dual infeasible variables.

x - Integer array of length p_nprimalcols where the primal infeasible variables will be returned. May be null if not required.

slack - Integer array of length p_nprimalrows where the primal infeasible rows will be returned. May be null if not required.

duals - Integer array of length p_ndualrows where the dual infeasible rows will be returned. May be null if not required.

djs - Integer array of length p_ndualcols where the dual infeasible variables will be returned. May be null if not required.

Throws:

XPRSprobException

getUnbVec
```
public void getUnbVec(IntHolder p_seq)
               throws XPRSprobException
```
Returns the index vector which causes the primal simplex or dual simplex algorithm to determine that a matrix is primal or dual unbounded respectively.

Parameters:

p_seq - Pointer to an integer where the vector causing the problem to be detected as being primal or dual unbounded will be returned. In the dual simplex case, the vector is the leaving row for which the dual simplex detected dual unboundedness. In the primal simplex case, the vector is the entering row p_seq (if p_seq is in the range 0 to ROWS -1) or column (variable) p_seq-ROWS- SPAREROWS (if p_seq is between ROWS+SPAREROWS and ROWS+SPAREROWS+ COLS -1) for which the primal simplex detected primal unboundedness.

Throws:

XPRSprobException

getUnbVec
```
public int getUnbVec()
              throws XPRSprobException
```
Convenience wrapper for getUnbVec(IntHolder).

Throws:

XPRSprobException

See Also:

getUnbVec(IntHolder)

crossoverLpSol
```
public void crossoverLpSol(IntHolder p_status)
                    throws XPRSprobException
```
Provides a basic optimal solution for a given solution of an LP problem. This function behaves like the crossover after the barrier algorithm.
Parameters:
p_status - Pointer to an int where the status will be returned. The status is one of:
- 0: The crossover is successful.
- 1: The crossover is not performed because the problem has no solution.
Throws:

XPRSprobException

tune
```
public void tune(java.lang.String flags)
          throws XPRSprobException
```
This function begins a tuner session for the current problem. The tuner will solve the problem multiple times while evaluating a list of control settings and promising combinations of them. When finished, the tuner will select and set the best control setting on the problem. Note that the direction of optimization is given by OBJSENSE.
Parameters:
flags - Flags to pass to tune, which specify whether to tune the current problem as an LP or a MIP problem, and the algorithm for solving the LP problem or the initial LP relaxation of the MIP. The flags are optional. If the argument includes:
- l: will tune the problem as an LP (mutually exclusive with flag g);
- g: will tune the problem as a MIP (mutually exclusive with flag l);
- d: will use the dual simplex method;
- p: will use the primal simplex method;
- b: will use the barrier method;
- n: will use the network simplex method.
Throws:

XPRSprobException

tunerWriteMethod
```
public void tunerWriteMethod(java.lang.String methodfile)
                      throws XPRSprobException
```
This function writes the current tuner method to a given file or prints it to the console.

Parameters:

methodfile - The method file name, to which the tuner will write the current tuner method. If the input is stdout or STDOUT, then the tuner will print the method to the console instead.

Throws:

XPRSprobException

tunerReadMethod
```
public void tunerReadMethod(java.lang.String methodfile)
                     throws XPRSprobException
```
This function loads a user defined tuner method from the given file.

Parameters:

methodfile - The method file name, from which the tuner can load a user-defined tuner method.

Throws:

XPRSprobException

getBarNumStability

public void getBarNumStability(int[] colstab,
                               int[] rowstab)
                        throws XPRSprobException

Throws:: XPRSprobException

getLastBarSol
```
public void getLastBarSol(double[] x,
                          double[] slack,
                          double[] duals,
                          double[] djs,
                          IntHolder p_status)
                   throws XPRSprobException
```
Used to obtain the last barrier solution values following optimization that used the barrier solver.

Parameters:

x - Double array of length ORIGINALCOLS where the values of the primal variables will be returned. May be null if not required.

slack - Double array of length ORIGINALROWS where the values of the slack variables will be returned. May be null if not required.

duals - Double array of length ORIGINALROWS where the values of the dual variables ( c_B^TB^-1) will be returned. May be null if not required.

djs - Double array of length ORIGINALCOLS where the reduced cost for each variable ( c^T-c_B^TB^-1A) will be returned. May be null if not required.

p_status - Status of the last barrier solve. Value matches that of XPRS_LPSTATUS should the solve have been stopped immediately after the barrier.

Throws:

XPRSprobException

clearIIS
```
public void clearIIS()
              throws XPRSprobException
```
Resets the search for Irreducible Infeasible Sets (IIS).

Throws:

XPRSprobException

firstIIS
```
public void firstIIS(int mode,
                     IntHolder p_status)
              throws XPRSprobException
```
Initiates a search for an Irreducible Infeasible Set (IIS) in an infeasible problem.
Parameters:
mode - The IIS search mode:
- 0: stops after finding the initial infeasible subproblem;
- 1: find an IIS, emphasizing simplicity of the IIS;
- 2: find an IIS, emphasizing a quick result.
p_status - The status after the search:
- 0: success;
- 1: if problem is feasible;
- 2: error;
- 3: timeout.
Throws:

XPRSprobException

firstIIS
```
public int firstIIS(int mode)
             throws XPRSprobException
```
Convenience wrapper for firstIIS(int, IntHolder).

Throws:

XPRSprobException

See Also:

firstIIS(int, IntHolder)

nextIIS
```
public void nextIIS(IntHolder p_status)
             throws XPRSprobException
```
Continues the search for further Irreducible Infeasible Sets (IIS), or calls firstIIS ( IIS) if no IIS has been identified yet.
Parameters:
p_status - The status after the search:
- 0: success;
- 1: no more IIS could be found, or problem is feasible if no firstIIS call preceded;
- 2: on error (when the function returns nonzero).
Throws:

XPRSprobException

nextIIS
```
public int nextIIS()
            throws XPRSprobException
```
Convenience wrapper for nextIIS(IntHolder).

Throws:

XPRSprobException

See Also:

nextIIS(IntHolder)

IISStatus
```
public void IISStatus(IntHolder p_niis,
                      int[] nrows,
                      int[] ncols,
                      double[] suminfeas,
                      int[] numinfeas)
               throws XPRSprobException
```
Returns statistics on the Irreducible Infeasible Sets (IIS) found so far by firstIIS ( IIS), nextIIS ( IIS -n) or iISAll ( IIS -a).

Parameters:

p_niis - The number of IISs found so far.

nrows - Number of rows in the IISs.

ncols - Number of bounds in the IISs.

suminfeas - The sum of infeasibilities in the IISs after the first phase simplex.

numinfeas - The number of infeasible variables in the IISs after the first phase simplex.

Throws:

XPRSprobException

IISAll
```
public void IISAll()
            throws XPRSprobException
```
Performs an automated search for independent Irreducible Infeasible Sets (IIS) in an infeasible problem.

Throws:

XPRSprobException

writeIIS
```
public void writeIIS(int iis,
                     java.lang.String filename,
                     int filetype,
                     java.lang.String flags)
              throws XPRSprobException
```
Writes an LP/MPS/CSV file containing a given Irreducible Infeasible Set (IIS). If 0 is passed as the IIS number parameter, the initial infeasible subproblem is written.
Parameters:

iis - The ordinal number of the IIS to be written.

filename - The name of the file to be created.
filetype - Type of file to be created:
- 0: creates an lp/mps file containing the IIS as a linear programming problem;
- 1: creates a comma separated (csv) file containing the description and supplementary information on the given IIS.
flags - Flags passed to the writeProb function.

Throws:

XPRSprobException

writeIIS

public void writeIIS(int iis,
                     java.lang.String filename,
                     int filetype)
              throws XPRSprobException

Convenience wrapper for writeIIS(int, String, int, String).

Throws:: XPRSprobException
See Also:: writeIIS(int, String, int, String)

IISIsolations
```
public void IISIsolations(int iis)
                   throws XPRSprobException
```
Performs the isolation identification procedure for an Irreducible Infeasible Set (IIS).

Parameters:

iis - The number of the IIS identified by either firstIIS ( IIS), nextIIS ( IIS -n) or iISAll ( IIS -a) in which the isolations should be identified.

Throws:

XPRSprobException

getIISData
```
public void getIISData(int iis,
                       IntHolder p_nrows,
                       IntHolder p_ncols,
                       int[] rowind,
                       int[] colind,
                       byte[] contype,
                       byte[] bndtype,
                       double[] duals,
                       double[] djs,
                       byte[] isolationrows,
                       byte[] isolationcols)
                throws XPRSprobException
```
Returns information for an Irreducible Infeasible Set: size, variables (row and column vectors) and conflicting sides of the variables, duals and reduced costs.
Parameters:

iis - The ordinal number of the IIS to get data for.

p_nrows - Pointer to an integer where the number of rows in the IIS will be returned.

p_ncols - Pointer to an integer where the number of bounds in the IIS will be returned.

rowind - Indices of rows in the IIS. Can be null if not required.

colind - Indices of bounds (columns) in the IIS. Can be null if not required.
contype - Sense of rows in the IIS:
- L: for less or equal row;
- G: for greater or equal row.
- E: for an equality row (for a non LP IIS);
- 1: for a SOS1 row;
- 2: for a SOS2 row;
- W: for a piecewise linear constraint;
- X: for a general constraint;
- I: for an indicator row.
Can be null if not required.
bndtype - Sense of bound in the IIS:
- U: for upper bound;
- L: for lower bound.
- F: for fixed columns (for a non LP IIS);
- B: for a binary column;
- I: for an integer column;
- P: for a partial integer columns;
- S: for a semi-continuous column;
- R: for a semi-continuous integer column.
Can be null if not required.
duals - The dual multipliers associated with the rows. Can be null if not required.

djs - The dual multipliers (reduced costs) associated with the bounds. Can be null if not required.
isolationrows - The isolation status of the rows:
- -1: if isolation information is not available for row (run iis isolations);
- 0: if row is not in isolation;
- 1: if row is in isolation.
Can be null if not required.
isolationcols - The isolation status of the bounds:
- -1: if isolation information is not available for column (run iis isolations);
- 0: if column is not in isolation;
- 1: if column is in isolation.
Can be null if not required.
Throws:

XPRSprobException

getiis

public void getiis(IntHolder p_ncols,
                   IntHolder p_nrows,
                   int[] colind,
                   int[] rowind)
            throws XPRSprobException

Throws:: XPRSprobException

getiis
```
public void getiis(IntHolder p_ncols,
                   IntHolder p_nrows)
            throws XPRSprobException
```
Convenience wrapper for getiis(IntHolder, IntHolder, int[], int[]).

Throws:

XPRSprobException

See Also:

getiis(IntHolder, IntHolder, int[], int[])

loadPresolveBasis
```
public void loadPresolveBasis(int[] rowstat,
                              int[] colstat)
                       throws XPRSprobException
```
Loads a presolved basis from the user's areas.
Parameters:
rowstat - Integer array of length ROWS containing the basis status of the slack, surplus or artificial variable associated with each row. The status must be one of:
- 0: slack, surplus or artificial is non-basic at lower bound;
- 1: slack, surplus or artificial is basic;
- 2: slack or surplus is non-basic at upper bound.
colstat - Integer array of length COLS containing the basis status of each of the columns in the matrix. The status must be one of:
- 0: variable is non-basic at lower bound or superbasic at zero if the variable has no lower bound;
- 1: variable is basic;
- 2: variable is at upper bound;
- 3: variable is super-basic.
Throws:

XPRSprobException

getGlobal
```
public void getGlobal(IntHolder p_nentities,
                      IntHolder p_nsets,
                      byte[] coltype,
                      int[] colind,
                      double[] limit,
                      byte[] settype,
                      int[] start,
                      int[] setcols,
                      double[] refval)
               throws XPRSprobException
```
Retrieves global information about a problem. It must be called before mipOptimize if the presolve option is used.
Parameters:

p_nentities - Pointer to the integer where the number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities will be returned. This is equal to the problem attribute MIPENTS.

p_nsets - Pointer to the integer where the number of SOS1 and SOS2 sets will be returned. It can be retrieved from the problem attribute SETS.
coltype - Character array of length p_nentities where the entity types will be returned. The types will be one of:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integer variables.
colind - Integer array of length p_nentities where the column indices of the global entities will be returned.

limit - Double array of length p_nentities where the limits for the partial integer variables and lower bounds for the semi-continuous and semi-continuous integer variables will be returned (any entries in the positions corresponding to binary and integer variables will be meaningless).
settype - Character array of length p_nsets where the set types will be returned. The set types will be one of:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
start - Integer array where the offsets into the setcols and refval arrays indicating the start of the sets will be returned. This array must be of length p_nsets+1, the final element will contain the offset where set p_nsets+1 would start and equals the length of the setcols and refval arrays, SETMEMBERS.

setcols - Integer array of length SETMEMBERS where the columns in each set will be returned.

refval - Double array of length SETMEMBERS where the reference row entries for each member of the sets will be returned.

Throws:

XPRSprobException

getGlobal
```
public void getGlobal(IntHolder p_nentities,
                      byte[] coltype,
                      int[] colind,
                      double[] limit)
               throws XPRSprobException
```
Convenience wrapper for getGlobal(IntHolder, IntHolder, byte[], int[], double[], byte[], int[], int[], double[]).

Throws:

XPRSprobException

See Also:

getGlobal(IntHolder, IntHolder, byte[], int[], double[], byte[], int[], int[], double[])

getGlobal
```
public int getGlobal(byte[] coltype,
                     int[] colind,
                     double[] limit)
              throws XPRSprobException
```
Convenience wrapper for getGlobal(IntHolder, IntHolder, byte[], int[], double[], byte[], int[], int[], double[]).

Throws:

XPRSprobException

See Also:

getGlobal(IntHolder, IntHolder, byte[], int[], double[], byte[], int[], int[], double[])

getGlobal
```
public void getGlobal(IntHolder p_nentities,
                      IntHolder p_nsets,
                      byte[] coltype,
                      int[] colind,
                      double[] limit,
                      byte[] settype,
                      long[] start,
                      int[] setcols,
                      double[] refval)
               throws XPRSprobException
```
Retrieves global information about a problem. It must be called before mipOptimize if the presolve option is used.
Parameters:

p_nentities - Pointer to the integer where the number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities will be returned. This is equal to the problem attribute MIPENTS.

p_nsets - Pointer to the integer where the number of SOS1 and SOS2 sets will be returned. It can be retrieved from the problem attribute SETS.
coltype - Character array of length p_nentities where the entity types will be returned. The types will be one of:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integer variables.
colind - Integer array of length p_nentities where the column indices of the global entities will be returned.

limit - Double array of length p_nentities where the limits for the partial integer variables and lower bounds for the semi-continuous and semi-continuous integer variables will be returned (any entries in the positions corresponding to binary and integer variables will be meaningless).
settype - Character array of length p_nsets where the set types will be returned. The set types will be one of:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
start - Integer array where the offsets into the setcols and refval arrays indicating the start of the sets will be returned. This array must be of length p_nsets+1, the final element will contain the offset where set p_nsets+1 would start and equals the length of the setcols and refval arrays, SETMEMBERS.

setcols - Integer array of length SETMEMBERS where the columns in each set will be returned.

refval - Double array of length SETMEMBERS where the reference row entries for each member of the sets will be returned.

Throws:

XPRSprobException

loadSecureVecs
```
public void loadSecureVecs(int nrows,
                           int ncols,
                           int[] rowind,
                           int[] colind)
                    throws XPRSprobException
```
Allows the user to mark rows and columns in order to prevent the presolve removing these rows and columns from the matrix.

Parameters:

nrows - Number of rows to be marked.

ncols - Number of columns to be marked.

rowind - Integer array of length nrows containing the rows to be marked. May be null if not required.

colind - Integer array of length ncols containing the columns to be marked. May be null if not required.

Throws:

XPRSprobException

addRows
```
public void addRows(int nrows,
                    int ncoefs,
                    byte[] rowtype,
                    double[] rhs,
                    double[] rng,
                    int[] start,
                    int[] colind,
                    double[] rowcoef)
             throws XPRSprobException
```
Allows rows to be added to the matrix after passing it to the Optimizer using the input routines.
Parameters:

nrows - Number of new rows.

ncoefs - Number of new nonzeros in the added rows.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= row;
- G: indicates >= row;
- E: indicates an = row.
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side elements.

rng - Double array of length nrows containing the row range elements. This may be null if there are no ranged constraints. The values in the rng array will only be read for R type rows. The entries for other type rows will be ignored.

start - Integer array of length nrows containing the offsets in the colind and rowcoef arrays of the start of the elements for each row.

colind - Integer array of length ncoefs containing the (contiguous) column indices for the elements in each row.

rowcoef - Double array of length ncoefs containing the (contiguous) element values.

Throws:

XPRSprobException

addRows

public void addRows(int nrows,
                    int ncoefs,
                    byte[] rowtype,
                    double[] rhs,
                    int[] start,
                    int[] colind,
                    double[] rowcoef)
             throws XPRSprobException

Convenience wrapper for addRows(int, int, byte[], double[], double[], int[], int[], double[]).

Throws:: XPRSprobException
See Also:: addRows(int, int, byte[], double[], double[], int[], int[], double[])

addRows
```
public void addRows(int nrows,
                    long ncoefs,
                    byte[] rowtype,
                    double[] rhs,
                    double[] rng,
                    long[] start,
                    int[] colind,
                    double[] rowcoef)
             throws XPRSprobException
```
Allows rows to be added to the matrix after passing it to the Optimizer using the input routines.
Parameters:

nrows - Number of new rows.

ncoefs - Number of new nonzeros in the added rows.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= row;
- G: indicates >= row;
- E: indicates an = row.
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side elements.

rng - Double array of length nrows containing the row range elements. This may be null if there are no ranged constraints. The values in the rng array will only be read for R type rows. The entries for other type rows will be ignored.

start - Integer array of length nrows containing the offsets in the colind and rowcoef arrays of the start of the elements for each row.

colind - Integer array of length ncoefs containing the (contiguous) column indices for the elements in each row.

rowcoef - Double array of length ncoefs containing the (contiguous) element values.

Throws:

XPRSprobException

addRows

public void addRows(int nrows,
                    long ncoefs,
                    byte[] rowtype,
                    double[] rhs,
                    long[] start,
                    int[] colind,
                    double[] rowcoef)
             throws XPRSprobException

Convenience wrapper for addRows(int, long, byte[], double[], double[], long[], int[], double[]).

Throws:: XPRSprobException
See Also:: addRows(int, long, byte[], double[], double[], long[], int[], double[])

delRows
```
public void delRows(int nrows,
                    int[] rowind)
             throws XPRSprobException
```
Delete rows from a matrix.

Parameters:

nrows - Number of rows to delete.

rowind - An integer array of length nrows containing the rows to delete.

Throws:

XPRSprobException

addCols
```
public void addCols(int ncols,
                    int ncoefs,
                    double[] objcoef,
                    int[] start,
                    int[] rowind,
                    double[] rowcoef,
                    double[] lb,
                    double[] ub)
             throws XPRSprobException
```
Allows columns to be added to the matrix after passing it to the Optimizer using the input routines.

Parameters:

ncols - Number of new columns.

ncoefs - Number of new nonzeros in the added columns.

objcoef - Double array of length ncols containing the objective function coefficients of the new columns.

start - Integer array of length ncols containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column.

rowind - Integer array of length ncoefs containing the row indices for the elements in each column.

rowcoef - Double array of length ncoefs containing the element values.

lb - Double array of length ncols containing the lower bounds on the added columns.

ub - Double array of length ncols containing the upper bounds on the added columns.

Throws:

XPRSprobException

addCols
```
public void addCols(int ncols,
                    long ncoefs,
                    double[] objcoef,
                    long[] start,
                    int[] rowind,
                    double[] rowcoef,
                    double[] lb,
                    double[] ub)
             throws XPRSprobException
```
Allows columns to be added to the matrix after passing it to the Optimizer using the input routines.

Parameters:

ncols - Number of new columns.

ncoefs - Number of new nonzeros in the added columns.

objcoef - Double array of length ncols containing the objective function coefficients of the new columns.

start - Integer array of length ncols containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column.

rowind - Integer array of length ncoefs containing the row indices for the elements in each column.

rowcoef - Double array of length ncoefs containing the element values.

lb - Double array of length ncols containing the lower bounds on the added columns.

ub - Double array of length ncols containing the upper bounds on the added columns.

Throws:

XPRSprobException

delCols
```
public void delCols(int ncols,
                    int[] colind)
             throws XPRSprobException
```
Delete columns from a matrix.

Parameters:

ncols - Number of columns to delete.

colind - Integer array of length ncols containing the columns to delete.

Throws:

XPRSprobException

chgColType
```
public void chgColType(int ncols,
                       int[] colind,
                       byte[] coltype)
                throws XPRSprobException
```
Used to change the type of a column in the matrix.
Parameters:

ncols - Number of columns to change.

colind - Integer array of length ncols containing the indices of the columns.
coltype - Character array of length ncols giving the new column types:
- C: indicates a continuous column;
- B: indicates a binary column;
- I: indicates an integer column.
- S: indicates a semi—continuous column. The semi—continuous lower bound will be set to 1.0.
- R: indicates a semi—integer column. The semi—integer lower bound will be set to 1.0.
- P: indicates a partial integer column. The partial integer bound will be set to 1.0.
Throws:

XPRSprobException

chgColType
```
public void chgColType(int x,
                       byte value)
                throws XPRSprobException
```
Convenience wrapper for chgColType(int, int[], byte[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

chgColType(int, int[], byte[])

loadBasis
```
public void loadBasis(int[] rowstat,
                      int[] colstat)
               throws XPRSprobException
```
Loads a basis from the user's areas.
Parameters:
rowstat - Integer array of length ROWS containing the basis status of the slack, surplus or artificial variable associated with each row. The status must be one of:
- 0: slack, surplus or artificial is non-basic at lower bound;
- 1: slack, surplus or artificial is basic;
- 2: slack or surplus is non-basic at upper bound.
- 3: slack or surplus is super-basic.
colstat - Integer array of length COLS containing the basis status of each of the columns in the constraint matrix. The status must be one of:
- 0: variable is non-basic at lower bound or superbasic at zero if the variable has no lower bound;
- 1: variable is basic;
- 2: variable is at upper bound;
- 3: variable is super-basic.
Throws:

XPRSprobException

postSolve
```
public void postSolve()
               throws XPRSprobException
```
Postsolve the current matrix when it is in a presolved state.

Throws:

XPRSprobException

delSets
```
public void delSets(int nsets,
                    int[] setind)
             throws XPRSprobException
```
Delete sets from a problem.

Parameters:

nsets - Number of sets to delete.

setind - An integer array of length nsets containing the sets to delete.

Throws:

XPRSprobException

addSets
```
public void addSets(int nsets,
                    int nelems,
                    byte[] settype,
                    int[] start,
                    int[] colind,
                    double[] refval)
             throws XPRSprobException
```
Allows sets to be added to the problem after passing it to the Optimizer using the input routines.
Parameters:

nsets - Number of new sets.

nelems - Number of new nonzeros in the added sets.
settype - Character array of length nsets containing the set types:
- 1: indicates a SOS1;
- 2: indicates a SOS2;
start - Integer array of length nsets containing the offsets in the colind and refval arrays of the start of the elements for each set.

colind - Integer array of length nelems containing the (contiguous) column indices for the elements in each set.

refval - Double array of length nelems containing the (contiguous) reference values.

Throws:

XPRSprobException

addSets
```
public void addSets(int nsets,
                    long nelems,
                    byte[] settype,
                    long[] start,
                    int[] colind,
                    double[] refval)
             throws XPRSprobException
```
Allows sets to be added to the problem after passing it to the Optimizer using the input routines.
Parameters:

nsets - Number of new sets.

nelems - Number of new nonzeros in the added sets.
settype - Character array of length nsets containing the set types:
- 1: indicates a SOS1;
- 2: indicates a SOS2;
start - Integer array of length nsets containing the offsets in the colind and refval arrays of the start of the elements for each set.

colind - Integer array of length nelems containing the (contiguous) column indices for the elements in each set.

refval - Double array of length nelems containing the (contiguous) reference values.

Throws:

XPRSprobException

strongBranch
```
public void strongBranch(int nbounds,
                         int[] colind,
                         byte[] bndtype,
                         double[] bndval,
                         int iterlim,
                         double[] objval,
                         int[] status)
                  throws XPRSprobException
```
Performs strong branching iterations on all specified bound changes. For each candidate bound change, strongBranch performs dual simplex iterations starting from the current optimal solution of the base LP, and returns both the status and objective value reached after these iterations.
Parameters:

nbounds - Number of bound changes to try.

colind - Integer array of size nbounds containing the indices of the columns on which the bounds will change.
bndtype - Character array of length nbounds indicating the type of bound to change:
- U: indicates change the upper bound;
- L: indicates change the lower bound;
- B: indicates change both bounds, i.e. fix the column.
bndval - Double array of length nbounds giving the new bound values.

iterlim - Maximum number of LP iterations to perform for each bound change.

objval - Objective value of each LP after performing the strong branching iterations.

status - Status of each LP after performing the strong branching iterations, as detailed for the LPSTATUS attribute.

Throws:

XPRSprobException

estimateRowDualRanges
```
public void estimateRowDualRanges(int nrows,
                                  int[] rowind,
                                  int iterlim,
                                  double[] mindual,
                                  double[] maxdual)
                           throws XPRSprobException
```
Performs a dual side range sensitivity analysis, i.e. calculates estimates for the possible ranges for dual values.

Parameters:

nrows - The number of rows to analyze.

rowind - Row indices to analyze.

iterlim - Effort limit expressed as simplex iterations per row.

mindual - Estimated lower bounds on the possible dual ranges.

maxdual - Estimated upper bounds on the possible dual ranges.

Throws:

XPRSprobException

setMessageStatus
```
public void setMessageStatus(int msgcode,
                             int status)
                      throws XPRSprobException
```
Manages suppression of messages.

Parameters:

msgcode - The id number of the message. Refer to the section for a list of possible message numbers.

status - Non-zero if the message is not suppressed; 0 otherwise. If a value for status is not supplied in the command-line call then the console Optimizer prints the value of the suppression status to screen i.e., non-zero if the message is not suppressed; 0 otherwise.

Throws:

XPRSprobException

getMessageStatus
```
public void getMessageStatus(int msgcode,
                             IntHolder p_status)
                      throws XPRSprobException
```
Retrieves the current suppression status of a message.

Parameters:

msgcode - The id number of the message. Refer to Chapter for a list of possible message numbers.

p_status - Non-zero if the message is not suppressed; 0 otherwise.

Throws:

XPRSprobException

getMessageStatus
```
public int getMessageStatus(int msgcode)
                     throws XPRSprobException
```
Convenience wrapper for getMessageStatus(int, IntHolder).

Throws:

XPRSprobException

See Also:

getMessageStatus(int, IntHolder)

chgObjSense
```
public void chgObjSense(XPRSenumerations.ObjSense objsense)
                 throws XPRSprobException
```
Changes the problem's objective function sense to minimize or maximize.

Parameters:

objsense - XPRS_OBJ_MINIMIZE to change into a minimization, or XPRS_OBJ_MAXIMIZE to change into maximization problem.

Throws:

XPRSprobException

chgGlbLimit
```
public void chgGlbLimit(int ncols,
                        int[] colind,
                        double[] limit)
                 throws XPRSprobException
```
Used to change semi-continuous or semi-integer lower bounds, or upper limits on partial integers.

Parameters:

ncols - Number of column limits to change.

colind - Integer array of size ncols containing the indices of the semi-continuous, semi-integer or partial integer columns that should have their limits changed.

limit - Double array of length ncols giving the new limit values.

Throws:

XPRSprobException

chgGlbLimit
```
public void chgGlbLimit(int x,
                        double value)
                 throws XPRSprobException
```
Convenience wrapper for chgGlbLimit(int, int[], double[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

chgGlbLimit(int, int[], double[])

restore
```
public void restore(java.lang.String probname,
                    java.lang.String flags)
             throws XPRSprobException
```
Restores the Optimizer's data structures from a file created by save ( SAVE). Optimization may then recommence from the point at which the file was created.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing the problem name.
flags - Additional flags
- h: Do not restore hardware information from the file;
- v: use the provided filename verbatim, without appending the .svf extension.
Throws:

XPRSprobException

restore
```
public void restore()
             throws XPRSprobException
```
Convenience wrapper for restore(String, String).

Throws:

XPRSprobException

See Also:

restore(String, String)

restore
```
public void restore(java.lang.String probname)
             throws XPRSprobException
```
Convenience wrapper for restore(String, String).

Throws:

XPRSprobException

See Also:

restore(String, String)

pivot
```
public void pivot(int enter,
                  int leave)
           throws XPRSprobException
```
Performs a simplex pivot by bringing variable enter into the basis and removing leave.

Parameters:

enter - Index of row or column to enter basis.

leave - Index of row or column to leave basis.

Throws:

XPRSprobException

loadLPSol
```
public void loadLPSol(double[] x,
                      double[] slack,
                      double[] duals,
                      double[] djs,
                      IntHolder p_status)
               throws XPRSprobException
```
Loads an LP solution for the problem into the Optimizer.
Parameters:

x - Optional: Double array of length COLS (for the original problem and not the presolve problem) containing the values of the variables.

slack - Optional: double array of length ROWS containing the values of slack variables.

duals - Optional: double array of length ROWS containing the values of dual variables.

djs - Optional: double array of length COLS containing the values of reduced costs.
p_status - Pointer to an int where the status will be returned. The status is one of:
- 0: Solution is loaded.
- 1: Solution is not loaded because the problem is in presolved status.
Throws:

XPRSprobException

basisCondition
```
public void basisCondition(DoubleHolder p_cond,
                           DoubleHolder p_scaledcond)
                    throws XPRSprobException
```
Deprecated.

Calculates the condition number of the current basis after solving the LP relaxation.

Parameters:

p_cond - The returned condition number of the current basis.

p_scaledcond - The returned condition number of the current basis for the scaled problem.

Throws:

XPRSprobException

repairWeightedInfeas
```
public void repairWeightedInfeas(IntHolder p_status,
                                 double[] lepref,
                                 double[] gepref,
                                 double[] lbpref,
                                 double[] ubpref,
                                 char phase2,
                                 double delta,
                                 java.lang.String flags)
                          throws XPRSprobException
```
By relaxing a set of selected constraints and bounds of an infeasible problem, it attempts to identify a 'solution' that violates the selected set of constraints and bounds minimally, while satisfying all other constraints and bounds. Among such solution candidates, it selects one that is optimal regarding to the original objective function. For the console version, see REPAIRINFEAS.
Parameters:
p_status - The status after the relaxation:
- 1: relaxed problem is infeasible;
- 2: relaxed problem is unbounded;
- 3: solution of the relaxed problem regarding the original objective is nonoptimal;
- 4: error (when return code is nonzero);
- 5: numerical instability;
- 6: analysis of an infeasible relaxation was performed, but the relaxation is feasible.
lepref - Array of size ROWS containing the preferences for relaxing the less or equal side of row.

gepref - Array of size ROWS containing the preferences for relaxing the greater or equal side of a row.

lbpref - Array of size COLS containing the preferences for relaxing lower bounds.

ubpref - Array of size COLS containing preferences for relaxing upper bounds.
phase2 - Controls the second phase of optimization:
- o: use the objective sense of the original problem (default);
- x: maximize the relaxed problem using the original objective;
- f: skip optimization regarding the original objective;
- n: minimize the relaxed problem using the original objective;
- i: if the relaxation is infeasible, generate an irreducible infeasible subset for the analys of the problem;
- a: if the relaxation is infeasible, generate all irreducible infeasible subsets for the analys of the problem.
delta - The relaxation multiplier in the second phase -1.

flags - Specifies flags to be passed to the Optimizer.

Throws:

XPRSprobException

repairWeightedInfeasBounds
```
public void repairWeightedInfeasBounds(IntHolder p_status,
                                       double[] lepref,
                                       double[] gepref,
                                       double[] lbpref,
                                       double[] ubpref,
                                       double[] lerelax,
                                       double[] gerelax,
                                       double[] lbrelax,
                                       double[] ubrelax,
                                       char phase2,
                                       double delta,
                                       java.lang.String flags)
                                throws XPRSprobException
```
An extended version of repairWeightedInfeas that allows for bounding the level of relaxation allowed.
Parameters:
p_status - The status after the relaxation:
- 1: relaxed problem is infeasible;
- 2: relaxed problem is unbounded;
- 3: solution of the relaxed problem regarding the original objective is nonoptimal;
- 4: error (when return code is nonzero);
- 5: numerical instability;
- 6: analysis of an infeasible relaxation was performed, but the relaxation is feasible.
lepref - Array of size ROWS containing the preferences for relaxing the less or equal side of row. For the console use -lrp value.

gepref - Array of size ROWS containing the preferences for relaxing the greater or equal side of a row. For the console use -grp value.

lbpref - Array of size COLS containing the preferences for relaxing lower bounds. For the console use -lbp value.

ubpref - Array of size COLS containing preferences for relaxing upper bounds. For the console use -ubp value.

lerelax - Array of size ROWS containing the upper bounds on the amount the less or equal side of a row can be relaxed. For the console use -lrb value.

gerelax - Array of size ROWS containing the upper bounds on the amount the greater or equal side of a row can be relaxed. For the console use -grb value.

lbrelax - Array of size COLS containing the upper bounds on the amount the lower bounds can be relaxed. For the console use -lbb value.

ubrelax - Array of size COLS containing the upper bounds on the amount the upper bounds can be relaxed. For the console use -ubb value.
phase2 - Controls the second phase of optimization:
- o: use the objective sense of the original problem (default);
- x: maximize the relaxed problem using the original objective;
- f: skip optimization regarding the original objective;
- n: minimize the relaxed problem using the original objective;
- i: if the relaxation is infeasible, generate an irreducible infeasible subset for the analys of the problem;
- a: if the relaxation is infeasible, generate all irreducible infeasible subsets for the analys of the problem.
delta - The relaxation multiplier in the second phase -1.

flags - Specifies flags to be passed to the Optimizer.

Throws:

XPRSprobException

repairInfeas
```
public void repairInfeas(IntHolder p_status,
                         char penalty,
                         char phase2,
                         char flags,
                         double lepref,
                         double gepref,
                         double lbpref,
                         double ubpref,
                         double delta)
                  throws XPRSprobException
```
Provides a simplified interface for repairWeightedInfeas.
Parameters:
p_status - The status after the relaxation:
- 0: relaxed optimum found;
- 1: relaxed problem is infeasible;
- 2: relaxed problem is unbounded;
- 3: solution of the relaxed problem regarding the original objective is nonoptimal;
- 4: error (when return code is nonzero);
- 5: numerical instability;
- 6: analysis of an infeasible relaxation was performed, but the relaxation is feasible.
penalty - The type of penalties created from the preferences:
- c: each penalty is the reciprocal of the preference (default);
- s: the penalties are placed in the scaled problem.
phase2 - Controls the second phase of optimization:
- o: use the objective sense of the original problem (default);
- x: maximize the relaxed problem using the original objective;
- f: skip optimization regarding the original objective;
- n: minimize the relaxed problem using the original objective;
- i: if the relaxation is infeasible, generate an irreducible infeasible subset for the analys of the problem;
- a: if the relaxation is infeasible, generate all irreducible infeasible subsets for the analys of the problem.
flags - Specifies if the global search should be done:
- g: do the global search (default);
- l: solve as a linear model ignoring the discreteness of variables.
lepref - Preference for relaxing the less or equal side of row.

gepref - Preference for relaxing the greater or equal side of a row.

lbpref - Preferences for relaxing lower bounds.

ubpref - Preferences for relaxing upper bounds.

delta - The relaxation multiplier in the second phase -1. For console use -d value. A positive value means a relative relaxation by multiplying the first phase objective with ( delta-1), while a negative value means an absolute relaxation, by adding abs(delta) to the first phase objective.

Throws:

XPRSprobException

basisStability
```
public void basisStability(int type,
                           int norm,
                           int scaled,
                           DoubleHolder p_value)
                    throws XPRSprobException
```
Calculates various measures for the stability of the current basis, including the basis condition number.
Parameters:
type -
- 0: Condition number of the basis.
- 1: Stability measure for the solution relative to the current basis.
- 2: Stability measure for the duals relative to the current basis.
- 3: Stability measure for the right hand side relative to the current basis.
- 4: Stability measure for the basic part of the objective relative to the current basis.
norm -
- 0: Use the infinity norm.
- 1: Use the 1 norm.
- 2: Use the Euclidian norm for vectors, and the Frobenius norm for matrices.
scaled - If the stability values are to be calculated in the scaled, or the unscaled matrix.

p_value - Pointer to a double, where the calculated value is to be returned.

Throws:

XPRSprobException

objSA
```
public void objSA(int ncols,
                  int[] colind,
                  double[] lower,
                  double[] upper)
           throws XPRSprobException
```
Returns upper and lower sensitivity ranges for specified objective function coefficients. If the objective coefficients are varied within these ranges the current basis remains optimal and the reduced costs remain valid.

Parameters:

ncols - Number of objective function coefficients whose sensitivity is sought.

colind - Integer array of length ncols containing the indices of the columns whose objective function coefficients sensitivity ranges are required.

lower - Double array of length ncols where the objective function lower range values are to be returned.

upper - Double array of length ncols where the objective function upper range values are to be returned.

Throws:

XPRSprobException

bndsa
```
public void bndsa(int ncols,
                  int[] colind,
                  double[] lblower,
                  double[] lbupper,
                  double[] ublower,
                  double[] ubupper)
           throws XPRSprobException
```
Returns upper and lower sensitivity ranges for specified variables' lower and upper bounds. If the bounds are varied within these ranges the current basis remains optimal and feasible.

Parameters:

ncols - Number of variables whose sensitivity is sought.

colind - Integer array of length ncols containing the indices of the columns whose bounds' ranges are required.

lblower - Double array of length ncols where the variable lower bound lower range values are to be returned.

lbupper - Double array of length ncols where the variable lower bound upper range values are to be returned.

ublower - Double array of length ncols where the variable upper bound lower range values are to be returned.

ubupper - Double array of length ncols where the variable upper bound upper range values are to be returned.

Throws:

XPRSprobException

rhsSA
```
public void rhsSA(int nrows,
                  int[] rowind,
                  double[] lower,
                  double[] upper)
           throws XPRSprobException
```
Returns upper and lower sensitivity ranges for specified right hand side (RHS) function coefficients. If the RHS coefficients are varied within these ranges the current basis remains optimal and the reduced costs remain valid.

Parameters:

nrows - The number of RHS coefficients for which sensitivity ranges are required.

rowind - Integer array of length nrows containing the indices of the rows whose RHS coefficients sensitivity ranges are required.

lower - Double array of length nrows where the RHS lower range values are to be returned.

upper - Double array of length nrows where the RHS upper range values are to be returned.

Throws:

XPRSprobException

addQMatrix
```
public void addQMatrix(int row,
                       int ncoefs,
                       int[] rowqcol1,
                       int[] rowqcol2,
                       double[] rowqcoef)
                throws XPRSprobException
```
Adds a new quadratic matrix into a row defined by triplets.

Parameters:

row - Index of the row where the quadratic matrix is to be added.

ncoefs - Number of triplets used to define the quadratic matrix. This may be less than the number of coefficients in the quadratic matrix, since off diagonals and their transposed pairs are defined by one triplet.

rowqcol1 - First index in the triplets.

rowqcol2 - Second index in the triplets.

rowqcoef - Coefficients in the triplets.

Throws:

XPRSprobException

addQMatrix
```
public void addQMatrix(int row,
                       long ncoefs,
                       int[] rowqcol1,
                       int[] rowqcol2,
                       double[] rowqcoef)
                throws XPRSprobException
```
Adds a new quadratic matrix into a row defined by triplets.

Parameters:

row - Index of the row where the quadratic matrix is to be added.

ncoefs - Number of triplets used to define the quadratic matrix. This may be less than the number of coefficients in the quadratic matrix, since off diagonals and their transposed pairs are defined by one triplet.

rowqcol1 - First index in the triplets.

rowqcol2 - Second index in the triplets.

rowqcoef - Coefficients in the triplets.

Throws:

XPRSprobException

delQMatrix
```
public void delQMatrix(int row)
                throws XPRSprobException
```
Deletes the quadratic part of a row or of the objective function.

Parameters:

row - Index of row from which the quadratic part is to be deleted.

Throws:

XPRSprobException

loadQCQP
```
public void loadQCQP(java.lang.String probname,
                     int ncols,
                     int nrows,
                     byte[] rowtype,
                     double[] rhs,
                     double[] rng,
                     double[] objcoef,
                     int[] start,
                     int[] collen,
                     int[] rowind,
                     double[] rowcoef,
                     double[] lb,
                     double[] ub,
                     int nobjqcoefs,
                     int[] objqcol1,
                     int[] objqcol2,
                     double[] objqcoef,
                     int nqrows,
                     int[] qrowind,
                     int[] nrowqcoef,
                     int[] rowqcol1,
                     int[] rowqcol2,
                     double[] rowqcoef)
              throws XPRSprobException
```
Used to load a quadratic problem with quadratic side constraints into the Optimizer data structure. Such a problem may have quadratic terms in its objective function as well as in its constraints.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint (use this one for quadratic constraints as well);
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if there are no ranged constraints. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if all elements are contiguous and start[ncols] contains the offset where the elements for column ncols+1 would start. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

nqrows - Number of rows containing quadratic matrices.

qrowind - Integer array of size nqrows, containing the indices of rows with quadratic matrices in them. Note that the rows are expected to be defined in rowtype as type L.

nrowqcoef - Integer array of size nqrows, containing the number of nonzeros in each quadratic constraint matrix.

rowqcol1 - Integer array of size nqcelem, where nqcelem equals the sum of the elements in nrowqcoef (i.e. the total number of quadratic matrix elements in all the constraints). It contains the first column indices of the quadratic matrices. Indices for the first matrix are listed from 0 to nrowqcoef[0]-1, for the second matrix from nrowqcoef[0] to nrowqcoef[0]+ nrowqcoef[1]-1, etc.

rowqcol2 - Integer array of size nqcelem, containing the second index for the quadratic constraint matrices.

rowqcoef - Integer array of size nqcelem, containing the coefficients for the quadratic constraint matrices.

Throws:

XPRSprobException

loadQCQP
```
public void loadQCQP(java.lang.String probname,
                     int ncols,
                     int nrows,
                     byte[] rowtype,
                     double[] rhs,
                     double[] rng,
                     double[] objcoef,
                     long[] start,
                     int[] collen,
                     int[] rowind,
                     double[] rowcoef,
                     double[] lb,
                     double[] ub,
                     long nobjqcoefs,
                     int[] objqcol1,
                     int[] objqcol2,
                     double[] objqcoef,
                     int nqrows,
                     int[] qrowind,
                     long[] nrowqcoef,
                     int[] rowqcol1,
                     int[] rowqcol2,
                     double[] rowqcoef)
              throws XPRSprobException
```
Used to load a quadratic problem with quadratic side constraints into the Optimizer data structure. Such a problem may have quadratic terms in its objective function as well as in its constraints.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint (use this one for quadratic constraints as well);
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if there are no ranged constraints. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if all elements are contiguous and start[ncols] contains the offset where the elements for column ncols+1 would start. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

nqrows - Number of rows containing quadratic matrices.

qrowind - Integer array of size nqrows, containing the indices of rows with quadratic matrices in them. Note that the rows are expected to be defined in rowtype as type L.

nrowqcoef - Integer array of size nqrows, containing the number of nonzeros in each quadratic constraint matrix.

rowqcol1 - Integer array of size nqcelem, where nqcelem equals the sum of the elements in nrowqcoef (i.e. the total number of quadratic matrix elements in all the constraints). It contains the first column indices of the quadratic matrices. Indices for the first matrix are listed from 0 to nrowqcoef[0]-1, for the second matrix from nrowqcoef[0] to nrowqcoef[0]+ nrowqcoef[1]-1, etc.

rowqcol2 - Integer array of size nqcelem, containing the second index for the quadratic constraint matrices.

rowqcoef - Integer array of size nqcelem, containing the coefficients for the quadratic constraint matrices.

Throws:

XPRSprobException

loadQCQPGlobal
```
public void loadQCQPGlobal(java.lang.String probname,
                           int ncols,
                           int nrows,
                           byte[] rowtype,
                           double[] rhs,
                           double[] rng,
                           double[] objcoef,
                           int[] start,
                           int[] collen,
                           int[] rowind,
                           double[] rowcoef,
                           double[] lb,
                           double[] ub,
                           int nobjqcoefs,
                           int[] objqcol1,
                           int[] objqcol2,
                           double[] objqcoef,
                           int nqrows,
                           int[] qrowind,
                           int[] nrowqcoefs,
                           int[] rowqcol1,
                           int[] rowqcol2,
                           double[] rowqcoef,
                           int nentities,
                           int nsets,
                           byte[] coltype,
                           int[] entind,
                           double[] limit,
                           byte[] settype,
                           int[] setstart,
                           int[] setind,
                           double[] refval)
                    throws XPRSprobException
```
Used to load a global, quadratic problem with quadratic side constraints into the Optimizer data structure. Such a problem may have quadratic terms in its objective function as well as in its constraints. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint (use this one for quadratic constraints as well);
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if there are no ranged constraints. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if all elements are contiguous and start[ncols] contains the offset where the elements for column ncols+1 would start. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

nqrows - Number of rows containing quadratic matrices.

qrowind - Integer array of size nqrows, containing the indices of rows with quadratic matrices in them. Note that the rows are expected to be defined in rowtype as type L.

nrowqcoefs - Integer array of size nqrows, containing the number of nonzeros in each quadratic constraint matrix.

rowqcol1 - Integer array of size nqcelem, where nqcelem equals the sum of the elements in nrowqcoefs (i.e. the total number of quadratic matrix elements in all the constraints). It contains the first column indices of the quadratic matrices. Indices for the first matrix are listed from 0 to nrowqcoefs[0]-1, for the second matrix from nrowqcoefs[0] to nrowqcoefs[0]+ nrowqcoefs[1]-1, etc.

rowqcol2 - Integer array of size nqcelem, containing the second index for the quadratic constraint matrices.

rowqcoef - Integer array of size nqcelem, containing the coefficients for the quadratic constraint matrices.

nentities - Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.

nsets - Number of SOS1 and SOS2 sets.
coltype - Character array of length nentities containing the entity types:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integer variables.
entind - Integer array of length nentities containing the column indices of the global entities.

limit - Double array of length nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored). May be null if not required.
settype - Character array of length nsets containing the set types:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
May be null if not required.
setstart - Integer array containing the offsets in the setind and refval arrays indicating the start of the sets. This array is of length nsets+1, the last member containing the offset where set nsets+1 would start. May be null if not required.

setind - Integer array of length setstart[nsets]-1 containing the columns in each set. May be null if not required.

refval - Double array of length setstart[nsets]-1 containing the reference row entries for each member of the sets. May be null if not required.

Throws:

XPRSprobException

loadQCQPGlobal
```
public void loadQCQPGlobal(java.lang.String probname,
                           int ncols,
                           int nrows,
                           byte[] rowtype,
                           double[] rhs,
                           double[] rng,
                           double[] objcoef,
                           long[] start,
                           int[] collen,
                           int[] rowind,
                           double[] rowcoef,
                           double[] lb,
                           double[] ub,
                           long nobjqcoefs,
                           int[] objqcol1,
                           int[] objqcol2,
                           double[] objqcoef,
                           int nqrows,
                           int[] qrowind,
                           long[] nrowqcoefs,
                           int[] rowqcol1,
                           int[] rowqcol2,
                           double[] rowqcoef,
                           int nentities,
                           int nsets,
                           byte[] coltype,
                           int[] entind,
                           double[] limit,
                           byte[] settype,
                           long[] setstart,
                           int[] setind,
                           double[] refval)
                    throws XPRSprobException
```
Used to load a global, quadratic problem with quadratic side constraints into the Optimizer data structure. Such a problem may have quadratic terms in its objective function as well as in its constraints. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Parameters:

probname - A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols - Number of structural columns in the matrix.

nrows - Number of rows in the matrix (not including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.
rowtype - Character array of length nrows containing the row types:
- L: indicates a <= constraint (use this one for quadratic constraints as well);
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint;
- N: indicates a nonbinding constraint.
rhs - Double array of length nrows containing the right hand side coefficients of the rows. The right hand side value for a range row gives the upper bound on the row.

rng - Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if there are no ranged constraints. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef - Double array of length ncols containing the objective function coefficients.

start - Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen - Integer array of length ncols containing the number of nonzero elements in each column. May be null if all elements are contiguous and start[ncols] contains the offset where the elements for column ncols+1 would start. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind - Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef - Double array containing the nonzero element values; length as for rowind.

lb - Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity.

ub - Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity.

nobjqcoefs - Number of quadratic terms.

objqcol1 - Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.

objqcoef - Double array of size nobjqcoefs containing the quadratic coefficients.

nqrows - Number of rows containing quadratic matrices.

qrowind - Integer array of size nqrows, containing the indices of rows with quadratic matrices in them. Note that the rows are expected to be defined in rowtype as type L.

nrowqcoefs - Integer array of size nqrows, containing the number of nonzeros in each quadratic constraint matrix.

rowqcol1 - Integer array of size nqcelem, where nqcelem equals the sum of the elements in nrowqcoefs (i.e. the total number of quadratic matrix elements in all the constraints). It contains the first column indices of the quadratic matrices. Indices for the first matrix are listed from 0 to nrowqcoefs[0]-1, for the second matrix from nrowqcoefs[0] to nrowqcoefs[0]+ nrowqcoefs[1]-1, etc.

rowqcol2 - Integer array of size nqcelem, containing the second index for the quadratic constraint matrices.

rowqcoef - Integer array of size nqcelem, containing the coefficients for the quadratic constraint matrices.

nentities - Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.

nsets - Number of SOS1 and SOS2 sets.
coltype - Character array of length nentities containing the entity types:
- B: binary variables;
- I: integer variables;
- P: partial integer variables;
- S: semi-continuous variables;
- R: semi-continuous integer variables.
entind - Integer array of length nentities containing the column indices of the global entities.

limit - Double array of length nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored). May be null if not required.
settype - Character array of length nsets containing the set types:
- 1: SOS1 type sets;
- 2: SOS2 type sets.
May be null if not required.
setstart - Integer array containing the offsets in the setind and refval arrays indicating the start of the sets. This array is of length nsets+1, the last member containing the offset where set nsets+1 would start. May be null if not required.

setind - Integer array of length setstart[nsets]-1 containing the columns in each set. May be null if not required.

refval - Double array of length setstart[nsets]-1 containing the reference row entries for each member of the sets. May be null if not required.

Throws:

XPRSprobException

copyCallBacks
```
public void copyCallBacks(XPRSprob src)
                   throws XPRSprobException
```
Copies callback functions defined for one problem to another.

Parameters:

src - The problem from which the callbacks are copied.

Throws:

XPRSprobException

copyControls
```
public void copyControls(XPRSprob src)
                  throws XPRSprobException
```
Copies controls defined for one problem to another.

Parameters:

src - The problem from which the controls are copied.

Throws:

XPRSprobException

destroyProb

@Deprecated
public void destroyProb()
                             throws XPRSprobException

Deprecated. use close() instead.

Throws:: XPRSprobException

interrupt
```
public void interrupt(XPRSenumerations.StopType reason)
               throws XPRSprobException
```
Interrupts the Optimizer algorithms.
Parameters:
reason - The reason for stopping. Possible reasons are:
- XPRS_STOP_TIMELIMIT: time limit hit;
- XPRS_STOP_CTRLC: control C hit;
- XPRS_STOP_NODELIMIT: node limit hit;
- XPRS_STOP_ITERLIMIT: iteration limit hit;
- XPRS_STOP_MIPGAP: MIP gap is sufficiently small;
- XPRS_STOP_SOLLIMIT: solution limit hit;
- XPRS_STOP_USER: user interrupt.
Throws:

XPRSprobException

interrupt
```
public void interrupt()
               throws XPRSprobException
```
Convenience wrapper for interrupt(XPRSenumerations.StopType).

Throws:

XPRSprobException

See Also:

interrupt(XPRSenumerations.StopType)

getProbName
```
public void getProbName(StringHolder name)
                 throws XPRSprobException
```
Returns the current problem name.

Parameters:

name - A string of up to MAXPROBNAMELENGTH characters to contain the current problem name.

Throws:

XPRSprobException

getProbName
```
public java.lang.String getProbName()
                             throws XPRSprobException
```
Convenience wrapper for getProbName(StringHolder).

Throws:

XPRSprobException

See Also:

getProbName(StringHolder)

setIntControl
```
public void setIntControl(int control,
                          int value)
                   throws XPRSprobException
```
Sets the value of a given integer control parameter.

Parameters:

control - Control parameter whose value is to be set. A full list of all controls may be found in , or from the list in the xprs.h header file.

value - Value to which the control parameter is to be set.

Throws:

XPRSprobException

setLongControl
```
public void setLongControl(int control,
                           long value)
                    throws XPRSprobException
```
Sets the value of a given integer control parameter.

Parameters:

control - Control parameter whose value is to be set. A full list of all controls may be found in , or from the list in the xprs.h header file.

value - Value to which the control parameter is to be set.

Throws:

XPRSprobException

setDblControl
```
public void setDblControl(int control,
                          double value)
                   throws XPRSprobException
```
Sets the value of a given double control parameter.

Parameters:

control - Control parameter whose value is to be set. A full list of all controls may be found in , or from the list in the xprs.h header file.

value - Value to which the control parameter is to be set.

Throws:

XPRSprobException

setStrControl
```
public void setStrControl(int control,
                          java.lang.String value)
                   throws XPRSprobException
```
Used to set the value of a given string control parameter.

Parameters:

control - Control parameter whose value is to be set. A full list of all controls may be found in , or from the list in the xprs.h header file.

value - A string containing the value to which the control is to be set (plus a null terminator).

Throws:

XPRSprobException

getIntControl
```
public void getIntControl(int control,
                          IntHolder p_value)
                   throws XPRSprobException
```
Enables users to recover the values of various integer control parameters

Parameters:

control - Control parameter whose value is to be returned. A full list of all controls may be found in Chapter , or from the list in the xprs.h header file.

p_value - Pointer to an integer where the value of the control will be returned.

Throws:

XPRSprobException

getIntControl
```
public int getIntControl(int control)
                  throws XPRSprobException
```
Convenience wrapper for getIntControl(int, IntHolder).

Throws:

XPRSprobException

See Also:

getIntControl(int, IntHolder)

getLongControl
```
public void getLongControl(int control,
                           LongHolder p_value)
                    throws XPRSprobException
```
Enables users to recover the values of various integer control parameters

Parameters:

control - Control parameter whose value is to be returned. A full list of all controls may be found in Chapter , or from the list in the xprs.h header file.

p_value - Pointer to an integer where the value of the control will be returned.

Throws:

XPRSprobException

getLongControl
```
public long getLongControl(int control)
                    throws XPRSprobException
```
Convenience wrapper for getLongControl(int, LongHolder).

Throws:

XPRSprobException

See Also:

getLongControl(int, LongHolder)

getDblControl
```
public void getDblControl(int control,
                          DoubleHolder p_value)
                   throws XPRSprobException
```
Retrieves the value of a given double control parameter.

Parameters:

control - Control parameter whose value is to be returned. A full list of all controls may be found in Chapter , or from the list in the xprs.h header file.

p_value - Pointer to the location where the control value will be returned.

Throws:

XPRSprobException

getDblControl
```
public double getDblControl(int control)
                     throws XPRSprobException
```
Convenience wrapper for getDblControl(int, DoubleHolder).

Throws:

XPRSprobException

See Also:

getDblControl(int, DoubleHolder)

getStringControl

public void getStringControl(int control,
                             StringHolder value,
                             int maxbytes,
                             IntHolder p_nbytes)
                      throws XPRSprobException

Throws:: XPRSprobException

getIntAttrib
```
public void getIntAttrib(int attrib,
                         IntHolder p_value)
                  throws XPRSprobException
```
Enables users to recover the values of various integer problem attributes. Problem attributes are set during loading and optimization of a problem.

Parameters:

attrib - Problem attribute whose value is to be returned. A full list of all problem attributes may be found in Chapter , or from the list in the xprs.h header file.

p_value - Pointer to an integer where the value of the problem attribute will be returned.

Throws:

XPRSprobException

getIntAttrib
```
public int getIntAttrib(int attrib)
                 throws XPRSprobException
```
Convenience wrapper for getIntAttrib(int, IntHolder).

Throws:

XPRSprobException

See Also:

getIntAttrib(int, IntHolder)

getLongAttrib
```
public void getLongAttrib(int attrib,
                          LongHolder p_value)
                   throws XPRSprobException
```
Enables users to recover the values of various integer problem attributes. Problem attributes are set during loading and optimization of a problem.

Parameters:

attrib - Problem attribute whose value is to be returned. A full list of all problem attributes may be found in Chapter , or from the list in the xprs.h header file.

p_value - Pointer to an integer where the value of the problem attribute will be returned.

Throws:

XPRSprobException

getLongAttrib
```
public long getLongAttrib(int attrib)
                   throws XPRSprobException
```
Convenience wrapper for getLongAttrib(int, LongHolder).

Throws:

XPRSprobException

See Also:

getLongAttrib(int, LongHolder)

getStrStringAttrib

public void getStrStringAttrib(int attrib,
                               StringHolder value,
                               int maxbytes,
                               IntHolder p_nbytes)
                        throws XPRSprobException

Throws:: XPRSprobException

getDblAttrib
```
public void getDblAttrib(int attrib,
                         DoubleHolder p_value)
                  throws XPRSprobException
```
Enables users to retrieve the values of various double problem attributes. Problem attributes are set during loading and optimization of a problem.

Parameters:

attrib - Problem attribute whose value is to be returned. A full list of all available problem attributes may be found in Chapter , or from the list in the xprs.h header file.

p_value - Pointer to a double where the value of the problem attribute will be returned.

Throws:

XPRSprobException

getDblAttrib
```
public double getDblAttrib(int attrib)
                    throws XPRSprobException
```
Convenience wrapper for getDblAttrib(int, DoubleHolder).

Throws:

XPRSprobException

See Also:

getDblAttrib(int, DoubleHolder)

getControlInfo

public void getControlInfo(java.lang.String name,
                           IntHolder p_id,
                           XPRSenumerationHolders.ParameterType p_type)
                    throws XPRSprobException

Accesses the id number and the type information of a control given its name. A control name may be for example XPRS_PRESOLVE. Names are case-insensitive and may or may not have the XPRS_ prefix. The id number is the constant used to identify the control for calls to functions such as getIntControl. The function will return an id number of 0 and a type value of XPRS_TYPE_NOTDEFINED if the name is not recognized as a control name. Note that this will occur if the name is an attribute name and not a control name.

Parameters:

name - The name of the control to be queried. Names are case-insensitive and may or may not have the XPRS_ prefix. A full list of all controls may be found in , or from the list in the xprs.h header file.

p_id - Pointer to an integer where the id number will be returned.

p_type - Pointer to an integer where the type information will be returned. The returned value will be one of the following constants from xprs.h:

XPRS_TYPE_NOTDEFINED	The name was not recognized.
XPRS_TYPE_INT	32 bit integer.
XPRS_TYPE_INT64	64 bit integer.
XPRS_TYPE_DOUBLE	Double precision floating point.
XPRS_TYPE_STRING	String.

Throws:

XPRSprobException

getAttribInfo

public void getAttribInfo(java.lang.String name,
                          IntHolder p_id,
                          XPRSenumerationHolders.ParameterType p_type)
                   throws XPRSprobException

Accesses the id number and the type information of an attribute given its name. An attribute name may be for example XPRS_ROWS. Names are case-insensitive and may or may not have the XPRS_ prefix. The id number is the constant used to identify the attribute for calls to functions such as getIntAttrib. The type information returned will be one of the below integer constants defined in the xprs.h header file. The function will return an id number of 0 and a type value of XPRS_TYPE_NOTDEFINED if the name is not recognized as an attribute name. Note that this will occur if the name is a control name and not an attribute name.

Parameters:

name - The name of the attribute to be queried. Names are case-insensitive and may or may not have the XPRS_ prefix. A full list of all attributes may be found in Chapter , or from the list in the xprs.h header file.

p_id - Pointer to an integer where the id number will be returned.

p_type - Pointer to an integer where the type id will be returned. The value will be one of the following constants from xprs.h:

XPRS_TYPE_NOTDEFINED	The name was not recognized.
XPRS_TYPE_INT	32 bit integer.
XPRS_TYPE_INT64	64 bit integer.
XPRS_TYPE_DOUBLE	Double precision floating point.
XPRS_TYPE_STRING	String.

Throws:

XPRSprobException

getIndex
```
public void getIndex(int type,
                     java.lang.String name,
                     IntHolder p_index)
              throws XPRSprobException
```
Returns the index for a specified row or column name.
Parameters:
type -
- 1: if a row index is required;
- 2: if a column index is required.
name - Null terminated string.

p_index - Pointer of the integer where the row or column index number will be returned. A value of -1 will be returned if the row or column does not exist.

Throws:

XPRSprobException

getIndex
```
public int getIndex(int type,
                    java.lang.String name)
             throws XPRSprobException
```
Convenience wrapper for getIndex(int, String, IntHolder).

Throws:

XPRSprobException

See Also:

getIndex(int, String, IntHolder)

getLastError
```
public void getLastError(StringHolder errmsg)
                  throws XPRSprobException
```
Returns the error message corresponding to the last error encountered by a library function.

Parameters:

errmsg - A 512 character buffer where the last error message will be returned.

Throws:

XPRSprobException

getLastError
```
public java.lang.String getLastError()
                              throws XPRSprobException
```
Convenience wrapper for getLastError(StringHolder).

Specified by:

getLastError in class XPRSobject

Throws:

XPRSprobException

See Also:

getLastError(StringHolder)

getQObj
```
public void getQObj(int objqcol1,
                    int objqcol2,
                    DoubleHolder p_objqcoef)
             throws XPRSprobException
```
Returns a single quadratic objective function coefficient corresponding to the variable pair (objqcol1, objqcol2) of the Hessian matrix.

Parameters:

objqcol1 - Column index for the first variable in the quadratic term.

objqcol2 - Column index for the second variable in the quadratic term.

p_objqcoef - Pointer to a double value where the objective function coefficient is to be placed.

Throws:

XPRSprobException

getQObj
```
public double getQObj(int objqcol1,
                      int objqcol2)
               throws XPRSprobException
```
Convenience wrapper for getQObj(int, int, DoubleHolder).

Throws:

XPRSprobException

See Also:

getQObj(int, int, DoubleHolder)

getDirs
```
public void getDirs(IntHolder p_ndir,
                    int[] indices,
                    int[] prios,
                    byte[] branchdirs,
                    double[] uppseudo,
                    double[] downpseudo)
             throws XPRSprobException
```
Used to return the directives that have been loaded into a matrix. Priorities, forced branching directions and pseudo costs can be returned. If called after presolve, getDirs will get the directives for the presolved problem.
Parameters:

p_ndir - Pointer to an integer where the number of directives will be returned.

indices - Integer array of length p_ndir containing the column numbers ( 0, 1, 2,...) or negative values corresponding to special ordered sets (the first set numbered -1, the second numbered -2,...). May be null if not required.

prios - Integer array of length p_ndir containing the priorities for the columns and sets, where columns/sets with smallest priority will be branched on first. May be null if not required.
branchdirs - Character array of length p_ndir specifying the branching direction for each column or set:
- U: the entity is to be forced up;
- D: the entity is to be forced down;
- N: not specified.
May be null if not required.
uppseudo - Double array of length p_ndir containing the up pseudo costs for the columns and sets. May be null if not required.

downpseudo - Double array of length p_ndir containing the down pseudo costs for the columns and sets. May be null if not required.

Throws:

XPRSprobException

getDirs

public int getDirs(int[] indices,
                   int[] prios,
                   byte[] branchdirs,
                   double[] uppseudo,
                   double[] downpseudo)
            throws XPRSprobException

Convenience wrapper for getDirs(IntHolder, int[], int[], byte[], double[], double[]).

Throws:: XPRSprobException
See Also:: getDirs(IntHolder, int[], int[], byte[], double[], double[])

getDirs
```
public int getDirs()
            throws XPRSprobException
```
Convenience wrapper for getDirs(IntHolder, int[], int[], byte[], double[], double[]).

Throws:

XPRSprobException

See Also:

getDirs(IntHolder, int[], int[], byte[], double[], double[])

getPivotOrder
```
public void getPivotOrder(int[] pivotorder)
                   throws XPRSprobException
```
Returns the pivot order of the basic variables.

Parameters:

pivotorder - Integer array of length ROWS where the pivot order will be returned.

Throws:

XPRSprobException

getPresolveMap
```
public void getPresolveMap(int[] rowmap,
                           int[] colmap)
                    throws XPRSprobException
```
Returns the mapping of the row and column numbers from the presolve problem back to the original problem.

Parameters:

rowmap - Integer array of length ROWS where the row maps will be returned.

colmap - Integer array of length COLS where the column maps will be returned.

Throws:

XPRSprobException

btran
```
public void btran(double[] vec)
           throws XPRSprobException
```
Post-multiplies a (row) vector provided by the user by the inverse of the current basis.

Parameters:

vec - Double array of length ROWS containing the values by which the basis inverse is to be multiplied. The transformed values will also be returned in this array.

Throws:

XPRSprobException

ftran
```
public void ftran(double[] vec)
           throws XPRSprobException
```
Pre-multiplies a (column) vector provided by the user by the inverse of the current matrix.

Parameters:

vec - Double array of length ROWS containing the values which are to be multiplied by the basis inverse. The transformed values appear in the array.

Throws:

XPRSprobException

sparseBTran

public void sparseBTran(double[] val,
                        int[] ind,
                        IntHolder p_ncoefs)
                 throws XPRSprobException

Throws:: XPRSprobException

sparseFTran

public void sparseFTran(double[] val,
                        int[] ind,
                        IntHolder p_ncoefs)
                 throws XPRSprobException

Throws:: XPRSprobException

getObj
```
public void getObj(double[] objcoef,
                   int first,
                   int last)
            throws XPRSprobException
```
Returns the objective function coefficients for the columns in a given range.

Parameters:

objcoef - Double array of length last-first+1 where the objective function coefficients are to be placed.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getObj
```
public double getObj(int x)
              throws XPRSprobException
```
Convenience wrapper for getObj(double[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

getObj(double[], int, int)

getRHS
```
public void getRHS(double[] rhs,
                   int first,
                   int last)
            throws XPRSprobException
```
Returns the right hand side elements for the rows in a given range.

Parameters:

rhs - Double array of length last-first+1 where the right hand side elements are to be placed.

first - First row in the range.

last - Last row in the range.

Throws:

XPRSprobException

getRHS
```
public double getRHS(int x)
              throws XPRSprobException
```
Convenience wrapper for getRHS(double[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

getRHS(double[], int, int)

getRHSrange
```
public void getRHSrange(double[] rng,
                        int first,
                        int last)
                 throws XPRSprobException
```
Returns the right hand side range values for the rows in a given range.

Parameters:

rng - Double array of length last-first+1 where the right hand side range values are to be placed.

first - First row in the range.

last - Last row in the range.

Throws:

XPRSprobException

getRHSrange
```
public double getRHSrange(int x)
                   throws XPRSprobException
```
Convenience wrapper for getRHSrange(double[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

getRHSrange(double[], int, int)

getLB
```
public void getLB(double[] lb,
                  int first,
                  int last)
           throws XPRSprobException
```
Returns the lower bounds for the columns in a given range.

Parameters:

lb - Double array of length last-first+1 where the lower bounds are to be placed.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getLB
```
public double getLB(int x)
             throws XPRSprobException
```
Convenience wrapper for getLB(double[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

getLB(double[], int, int)

getUB
```
public void getUB(double[] ub,
                  int first,
                  int last)
           throws XPRSprobException
```
Returns the upper bounds for the columns in a given range.

Parameters:

ub - Double array of length last-first+1 where the upper bounds are to be placed.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getUB
```
public double getUB(int x)
             throws XPRSprobException
```
Convenience wrapper for getUB(double[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

getUB(double[], int, int)

getCols
```
public void getCols(int[] start,
                    int[] rowind,
                    double[] rowcoef,
                    int maxcoefs,
                    IntHolder p_ncoefs,
                    int first,
                    int last)
             throws XPRSprobException
```
Returns the nonzeros in the constraint matrix for the columns in a given range.

Parameters:

start - Integer array which will be filled with the indices indicating the starting offsets in the rowind and rowcoef arrays for each requested column. It must be of length at least last-first+2. Column i starts at position start[i] in the rowind and rowcoef arrays, and has start[i+1]-start[i] elements in it. May be null if not required.

rowind - Integer array of length maxcoefs which will be filled with the row indices of the nonzero coefficents for each column. May be null if not required.

rowcoef - Double array of length maxcoefs which will be filled with the nonzero coefficient values. May be null if not required.

maxcoefs - The size of the rowind and rowcoef arrays. This is the maximum number of nonzero coefficients that the Optimizer is allowed to return.

p_ncoefs - Pointer to an integer where the number of nonzero coefficients in the selected columns will be returned. If p_ncoefs exceeds maxcoefs, only the maxcoefs first nonzero coefficients will be returned.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getCols

public int getCols(int[] start,
                   int[] rowind,
                   double[] rowcoef,
                   int maxcoefs,
                   int first,
                   int last)
            throws XPRSprobException

Convenience wrapper for getCols(int[], int[], double[], int, IntHolder, int, int).

Throws:: XPRSprobException
See Also:: getCols(int[], int[], double[], int, IntHolder, int, int)

getCols
```
public void getCols(long[] start,
                    int[] rowind,
                    double[] rowcoef,
                    long maxcoefs,
                    LongHolder p_ncoefs,
                    int first,
                    int last)
             throws XPRSprobException
```
Returns the nonzeros in the constraint matrix for the columns in a given range.

Parameters:

start - Integer array which will be filled with the indices indicating the starting offsets in the rowind and rowcoef arrays for each requested column. It must be of length at least last-first+2. Column i starts at position start[i] in the rowind and rowcoef arrays, and has start[i+1]-start[i] elements in it. May be null if not required.

rowind - Integer array of length maxcoefs which will be filled with the row indices of the nonzero coefficents for each column. May be null if not required.

rowcoef - Double array of length maxcoefs which will be filled with the nonzero coefficient values. May be null if not required.

maxcoefs - The size of the rowind and rowcoef arrays. This is the maximum number of nonzero coefficients that the Optimizer is allowed to return.

p_ncoefs - Pointer to an integer where the number of nonzero coefficients in the selected columns will be returned. If p_ncoefs exceeds maxcoefs, only the maxcoefs first nonzero coefficients will be returned.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getCols

public long getCols(long[] start,
                    int[] rowind,
                    double[] rowcoef,
                    long maxcoefs,
                    int first,
                    int last)
             throws XPRSprobException

Convenience wrapper for getCols(long[], int[], double[], long, LongHolder, int, int).

Throws:: XPRSprobException
See Also:: getCols(long[], int[], double[], long, LongHolder, int, int)

getRows
```
public void getRows(int[] start,
                    int[] colind,
                    double[] colcoef,
                    int maxcoefs,
                    IntHolder p_ncoefs,
                    int first,
                    int last)
             throws XPRSprobException
```
Returns the nonzeros in the constraint matrix for the rows in a given range.

Parameters:

start - Integer array which will be filled with the indices indicating the starting offsets in the colind and colcoef arrays for each requested row. It must be of length at least last-first+2. Row i starts at position start[i] in the colind and colcoef arrays, and has start[i+1]-start[i] elements in it. May be null if not required.

colind - Integer arrays of length maxcoefs which will be filled with the column indices of the nonzero elements for each row. May be null if not required.

colcoef - Double array of length maxcoefs which will be filled with the nonzero element values. May be null if not required.

maxcoefs - Maximum number of elements to be retrieved.

p_ncoefs - Pointer to the integer where the number of nonzero elements in the selected rows will be returned. If the number of nonzero elements is greater than maxcoefs, then only maxcoefs elements will be returned. If p_ncoefs is smaller than maxcoefs, then only p_ncoefs will be returned.

first - First row in the range.

last - Last row in the range.

Throws:

XPRSprobException

getRows

public int getRows(int[] start,
                   int[] colind,
                   double[] colcoef,
                   int maxcoefs,
                   int first,
                   int last)
            throws XPRSprobException

Convenience wrapper for getRows(int[], int[], double[], int, IntHolder, int, int).

Throws:: XPRSprobException
See Also:: getRows(int[], int[], double[], int, IntHolder, int, int)

getRows
```
public void getRows(long[] start,
                    int[] colind,
                    double[] colcoef,
                    long maxcoefs,
                    LongHolder p_ncoefs,
                    int first,
                    int last)
             throws XPRSprobException
```
Returns the nonzeros in the constraint matrix for the rows in a given range.

Parameters:

start - Integer array which will be filled with the indices indicating the starting offsets in the colind and colcoef arrays for each requested row. It must be of length at least last-first+2. Row i starts at position start[i] in the colind and colcoef arrays, and has start[i+1]-start[i] elements in it. May be null if not required.

colind - Integer arrays of length maxcoefs which will be filled with the column indices of the nonzero elements for each row. May be null if not required.

colcoef - Double array of length maxcoefs which will be filled with the nonzero element values. May be null if not required.

maxcoefs - Maximum number of elements to be retrieved.

p_ncoefs - Pointer to the integer where the number of nonzero elements in the selected rows will be returned. If the number of nonzero elements is greater than maxcoefs, then only maxcoefs elements will be returned. If p_ncoefs is smaller than maxcoefs, then only p_ncoefs will be returned.

first - First row in the range.

last - Last row in the range.

Throws:

XPRSprobException

getRows

public long getRows(long[] start,
                    int[] colind,
                    double[] colcoef,
                    long maxcoefs,
                    int first,
                    int last)
             throws XPRSprobException

Convenience wrapper for getRows(long[], int[], double[], long, LongHolder, int, int).

Throws:: XPRSprobException
See Also:: getRows(long[], int[], double[], long, LongHolder, int, int)

getCoef
```
public void getCoef(int row,
                    int col,
                    DoubleHolder p_coef)
             throws XPRSprobException
```
Returns a single coefficient in the constraint matrix.

Parameters:

row - Row of the constraint matrix.

col - Column of the constraint matrix.

p_coef - Pointer to a double where the coefficient will be returned.

Throws:

XPRSprobException

getCoef
```
public double getCoef(int row,
                      int col)
               throws XPRSprobException
```
Convenience wrapper for getCoef(int, int, DoubleHolder).

Throws:

XPRSprobException

See Also:

getCoef(int, int, DoubleHolder)

getMQObj
```
public void getMQObj(int[] start,
                     int[] colind,
                     double[] objqcoef,
                     int maxcoefs,
                     IntHolder p_ncoefs,
                     int first,
                     int last)
              throws XPRSprobException
```
Returns the nonzeros in the quadratic objective coefficients matrix for the columns in a given range. To achieve maximum efficiency, getMQObj returns the lower triangular part of this matrix only.

Parameters:

start - Integer array which will be filled with indices indicating the starting offsets in the colind and objqcoef arrays for each requested column. It must be length of at least last-first+2. Column i starts at position start[i] in the mrwind and dmatval arrays, and has start[i+1]-start[i] elements in it. May be null if maxcoefs is 0.

colind - Integer array of length maxcoefs which will be filled with the column indices of the nonzero elements in the lower triangular part of Q. May be null if maxcoefs is 0.

objqcoef - Double array of length maxcoefs which will be filled with the nonzero element values. May be null if maxcoefs is 0.

maxcoefs - The maximum number of elements to be returned (size of the arrays).

p_ncoefs - Pointer to an integer where the number of nonzero quadratic objective coefficients will be returned. If the number of nonzero coefficients is greater than maxcoefs, then only maxcoefs elements will be returned. If p_ncoefs is smaller than maxcoefs, then only p_ncoefs will be returned.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getMQObj

public int getMQObj(int[] start,
                    int[] colind,
                    double[] objqcoef,
                    int maxcoefs,
                    int first,
                    int last)
             throws XPRSprobException

Convenience wrapper for getMQObj(int[], int[], double[], int, IntHolder, int, int).

Throws:: XPRSprobException
See Also:: getMQObj(int[], int[], double[], int, IntHolder, int, int)

getMQObj
```
public void getMQObj(long[] start,
                     int[] colind,
                     double[] objqcoef,
                     long maxcoefs,
                     LongHolder p_ncoefs,
                     int first,
                     int last)
              throws XPRSprobException
```
Returns the nonzeros in the quadratic objective coefficients matrix for the columns in a given range. To achieve maximum efficiency, getMQObj returns the lower triangular part of this matrix only.

Parameters:

start - Integer array which will be filled with indices indicating the starting offsets in the colind and objqcoef arrays for each requested column. It must be length of at least last-first+2. Column i starts at position start[i] in the mrwind and dmatval arrays, and has start[i+1]-start[i] elements in it. May be null if maxcoefs is 0.

colind - Integer array of length maxcoefs which will be filled with the column indices of the nonzero elements in the lower triangular part of Q. May be null if maxcoefs is 0.

objqcoef - Double array of length maxcoefs which will be filled with the nonzero element values. May be null if maxcoefs is 0.

maxcoefs - The maximum number of elements to be returned (size of the arrays).

p_ncoefs - Pointer to an integer where the number of nonzero quadratic objective coefficients will be returned. If the number of nonzero coefficients is greater than maxcoefs, then only maxcoefs elements will be returned. If p_ncoefs is smaller than maxcoefs, then only p_ncoefs will be returned.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getMQObj

public long getMQObj(long[] start,
                     int[] colind,
                     double[] objqcoef,
                     long maxcoefs,
                     int first,
                     int last)
              throws XPRSprobException

Convenience wrapper for getMQObj(long[], int[], double[], long, LongHolder, int, int).

Throws:: XPRSprobException
See Also:: getMQObj(long[], int[], double[], long, LongHolder, int, int)

writeBasis
```
public void writeBasis(java.lang.String filename,
                       java.lang.String flags)
                throws XPRSprobException
```
Writes the current basis to a file for later input into the Optimizer.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name from which the basis is to be written. If omitted, the default problem_name is used with a .bss extension.
flags - Flags to pass to writeBasis ( WRITEBASIS):
- i: output the internal presolved basis;
- t: output a compact advanced form of the basis;
- n: output basis file containing current solution values;
- h: output values in single precision;
- p: output values in full precision (obsolete as this is now default behavior);
- v: use the provided filename verbatim, without appending the .bss extension;
- z: compress the output file.
Throws:

XPRSprobException

writeBasis
```
public void writeBasis(java.lang.String filename)
                throws XPRSprobException
```
Convenience wrapper for writeBasis(String, String).

Throws:

XPRSprobException

See Also:

writeBasis(String, String)

writeBasis
```
public void writeBasis()
                throws XPRSprobException
```
Convenience wrapper for writeBasis(String, String).

Throws:

XPRSprobException

See Also:

writeBasis(String, String)

writeSol
```
public void writeSol(java.lang.String filename,
                     java.lang.String flags)
              throws XPRSprobException
```
Writes the current solution to a CSV format ASCII file, problem_name .asc (and .hdr).
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name to which the solution is to be written. If omitted, the default problem_name will be used. The extensions .hdr and .asc will be appended.
flags - Flags to control which optional fields are output:
- s: sequence number;
- n: name;
- t: type;
- b: basis status;
- a: activity;
- c: cost (columns), slack (rows);
- l: lower bound;
- u: upper bound;
- d: dj (column; reduced costs), dual value (rows; shadow prices);
- r: right hand side (rows).
If no flags are specified, all fields are output.
Additional flags:
- p: outputs in full precision;
- q: only outputs vectors with nonzero optimum value;
- x: output the current LP solution instead of the MIP solution;
- z: compress the output file.
Throws:

XPRSprobException

writeSol
```
public void writeSol(java.lang.String filename)
              throws XPRSprobException
```
Convenience wrapper for writeSol(String, String).

Throws:

XPRSprobException

See Also:

writeSol(String, String)

writeSol
```
public void writeSol()
              throws XPRSprobException
```
Convenience wrapper for writeSol(String, String).

Throws:

XPRSprobException

See Also:

writeSol(String, String)

writeBinSol
```
public void writeBinSol(java.lang.String filename,
                        java.lang.String flags)
                 throws XPRSprobException
```
Writes the current MIP or LP solution to a binary solution file for later input into the Optimizer.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name to which the solution is to be written. If omitted, the default problem_name is used with a .sol extension.
flags - Flags to pass to writeBinSol ( WRITEBINSOL):
- m: output the MIP solution;
- x: output the LP solution;
- v: use the provided filename verbatim, without appending the .sol extension;
- z: compress the output file.
Throws:

XPRSprobException

writeBinSol
```
public void writeBinSol(java.lang.String filename)
                 throws XPRSprobException
```
Convenience wrapper for writeBinSol(String, String).

Throws:

XPRSprobException

See Also:

writeBinSol(String, String)

writeBinSol
```
public void writeBinSol()
                 throws XPRSprobException
```
Convenience wrapper for writeBinSol(String, String).

Throws:

XPRSprobException

See Also:

writeBinSol(String, String)

getSol

public void getSol(double[] x,
                   double[] slack,
                   double[] duals,
                   double[] djs)
            throws XPRSprobException

Throws:: XPRSprobException

getSol
```
public void getSol(double[] x)
            throws XPRSprobException
```
Convenience wrapper for getSol(double[], double[], double[], double[]).

Throws:

XPRSprobException

See Also:

getSol(double[], double[], double[], double[])

writePrtSol
```
public void writePrtSol(java.lang.String filename,
                        java.lang.String flags)
                 throws XPRSprobException
```
Writes the current solution to a fixed format ASCII file, problem_name .prt.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name to which the solution is to be written. If omitted, the default problem_name will be used. The extension .prt will be appended.
flags - Flags for writePrtSol ( WRITEPRTSOL) are:
- x: write the LP solution instead of the current MIP solution;
- v: use the provided filename verbatim, without appending the .prt extension;
- z: write a compressed output file.
Throws:

XPRSprobException

writePrtSol
```
public void writePrtSol(java.lang.String filename)
                 throws XPRSprobException
```
Convenience wrapper for writePrtSol(String, String).

Throws:

XPRSprobException

See Also:

writePrtSol(String, String)

writePrtSol
```
public void writePrtSol()
                 throws XPRSprobException
```
Convenience wrapper for writePrtSol(String, String).

Throws:

XPRSprobException

See Also:

writePrtSol(String, String)

writeSlxSol
```
public void writeSlxSol(java.lang.String filename,
                        java.lang.String flags)
                 throws XPRSprobException
```
Creates an ASCII solution file ( .slx) using a similar format to MPS files. These files can be read back into the Optimizer using the readSlxSol function.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters containing the file name to which the solution is to be written. If omitted, the default problem_name is used with a .slx extension.
flags - Flags to pass to writeSlxSol ( WRITESLXSOL):
- l: write the LP solution in case of a MIP problem;
- m: write the MIP solution;
- p: use full precision for numerical values (obsolete as this is now default behavior);
- s: including slack variables;
- d: LP solution only: including dual variables;
- r: LP solution only: including reduced cost;
- v: use the provided filename verbatim, without appending the .slx extension;
- z: compress the output file.
Throws:

XPRSprobException

writeSlxSol
```
public void writeSlxSol(java.lang.String filename)
                 throws XPRSprobException
```
Convenience wrapper for writeSlxSol(String, String).

Throws:

XPRSprobException

See Also:

writeSlxSol(String, String)

writeSlxSol
```
public void writeSlxSol()
                 throws XPRSprobException
```
Convenience wrapper for writeSlxSol(String, String).

Throws:

XPRSprobException

See Also:

writeSlxSol(String, String)

getPrimalRay
```
public void getPrimalRay(double[] ray,
                         IntHolder p_hasray)
                  throws XPRSprobException
```
Retrieves a primal ray (primal unbounded direction) for the current problem, if the problem is found to be unbounded.

Parameters:

ray - Double array of length COLS to hold the ray. May be null if not required.

p_hasray - This variable will be set to 1 if the Optimizer is able to return a primal ray, 0 otherwise.

Throws:

XPRSprobException

getDualRay
```
public void getDualRay(double[] ray,
                       IntHolder p_hasray)
                throws XPRSprobException
```
Retrieves a dual ray (dual unbounded direction) for the current problem, if the problem is found to be infeasible.

Parameters:

ray - Double array of length ROWS to hold the ray. May be null if not required.

p_hasray - This variable will be set to 1 if the Optimizer is able to return a dual ray, 0 otherwise.

Throws:

XPRSprobException

strongBranchCB
```
public void strongBranchCB(int nbounds,
                           int[] colind,
                           byte[] bndtype,
                           double[] bndval,
                           int iterlim,
                           double[] objval,
                           int[] status,
                           XPRSstrongBranchSolveListener callback,
                           java.lang.Object data)
                    throws XPRSprobException
```
Performs strong branching iterations on all specified bound changes. For each candidate bound change, strongBranchCB performs dual simplex iterations starting from the current optimal solution of the base LP, and returns both the status and objective value reached after these iterations.
Parameters:

nbounds - Number of bound changes to try.

colind - Integer array of size nbounds containing the indices of the columns on which the bounds will change.
bndtype - Character array of length nbounds indicating the type of bound to change:
- U: indicates change the upper bound;
- L: indicates change the lower bound;
- B: indicates change both bounds, i.e. fix the column.
bndval - Double array of length nbounds giving the new bound values.

iterlim - Maximum number of LP iterations to perform for each bound change.

objval - Objective value of each LP after performing the strong branching iterations.

status - Status of each LP after performing the strong branching iterations, as detailed for the LPSTATUS attribute.

callback - Function to be called after each strong branch has been reoptimized.

data - User context to be provided for callback.

Throws:

XPRSprobException

loadMipSol
```
public void loadMipSol(double[] x,
                       IntHolder p_status)
                throws XPRSprobException
```
Loads a starting MIP solution for the problem into the Optimizer.
Parameters:

x - Double array of length COLS (for the original problem and not the presolve problem) containing the values of the variables.
p_status - Pointer to an int where the status will be returned. The status is one of:
- -1: Solution rejected because an error occurred;
- 0: Solution accepted. When loading a solution before a MIP solve, the solution is always accepted. See Further Information below.
- 1: Solution rejected because it is infeasible;
- 2: Solution rejected because it is cut off;
- 3: Solution rejected because the LP reoptimization was interrupted.
Throws:

XPRSprobException

loadMipSol
```
public int loadMipSol(double[] x)
               throws XPRSprobException
```
Convenience wrapper for loadMipSol(double[], IntHolder).

Throws:

XPRSprobException

See Also:

loadMipSol(double[], IntHolder)

getBasis
```
public void getBasis(int[] rowstat,
                     int[] colstat)
              throws XPRSprobException
```
Returns the current basis into the user's data arrays.
Parameters:
rowstat - Integer array of length ROWS to the basis status of the slack, surplus or artificial variable associated with each row. The status will be one of:
- 0: slack, surplus or artificial is non-basic at lower bound;
- 1: slack, surplus or artificial is basic;
- 2: slack or surplus is non-basic at upper bound.
- 3: slack or surplus is super-basic.
May be null if not required.
colstat - Integer array of length COLS to hold the basis status of the columns in the constraint matrix. The status will be one of:
- 0: variable is non-basic at lower bound, or superbasic at zero if the variable has no lower bound;
- 1: variable is basic;
- 2: variable is non-basic at upper bound;
- 3: variable is super-basic.
May be null if not required.
Throws:

XPRSprobException

getBasisVal
```
public void getBasisVal(int row,
                        int col,
                        IntHolder p_rowstat,
                        IntHolder p_colstat)
                 throws XPRSprobException
```
Returns the current basis status for a specific column or row.

Parameters:

row - Row index to get the row basis status for.

col - Column index to get the column basis status for.

p_rowstat - Integer pointer where the value of the row basis status will be returned. May be null if not required.

p_colstat - Integer pointer where the value of the column basis status will be returned. May be null if not required.

Throws:

XPRSprobException

addCuts
```
public void addCuts(int ncuts,
                    int[] cuttype,
                    byte[] rowtype,
                    double[] rhs,
                    int[] start,
                    int[] colind,
                    double[] cutcoef)
             throws XPRSprobException
```
Adds cuts directly to the matrix at the current node. Any cuts added to the matrix at the current node and not deleted at the current node will be automatically added to the cut pool. The cuts added to the cut pool will be automatically restored at descendant nodes.
Parameters:

ncuts - Number of cuts to add.

cuttype - Integer array of length ncuts containing the user assigned cut types. The cut types can be any integer chosen by the user, and are used to identify the cuts in other cut manager routines using user supplied parameters. The cut type can be interpreted as an integer or a bitmap - see delCuts.
rowtype - Character array of length ncuts containing the row types:
- L: indicates a <= row;
- G: indicates a >= row;
- E: indicates an = row.
rhs - Double array of length ncuts containing the right hand side elements for the cuts.

start - Integer array containing offset into the colind and cutcoef arrays indicating the start of each cut. This array is of length ncuts+1 with the last element, start[ncuts], being where cut ncuts+1 would start.

colind - Integer array of length start[ncuts] containing the column indices in the cuts.

cutcoef - Double array of length start[ncuts] containing the matrix values for the cuts.

Throws:

XPRSprobException

addCuts
```
public void addCuts(int ncuts,
                    int[] cuttype,
                    byte[] rowtype,
                    double[] rhs,
                    long[] start,
                    int[] colind,
                    double[] cutcoef)
             throws XPRSprobException
```
Adds cuts directly to the matrix at the current node. Any cuts added to the matrix at the current node and not deleted at the current node will be automatically added to the cut pool. The cuts added to the cut pool will be automatically restored at descendant nodes.
Parameters:

ncuts - Number of cuts to add.

cuttype - Integer array of length ncuts containing the user assigned cut types. The cut types can be any integer chosen by the user, and are used to identify the cuts in other cut manager routines using user supplied parameters. The cut type can be interpreted as an integer or a bitmap - see delCuts.
rowtype - Character array of length ncuts containing the row types:
- L: indicates a <= row;
- G: indicates a >= row;
- E: indicates an = row.
rhs - Double array of length ncuts containing the right hand side elements for the cuts.

start - Integer array containing offset into the colind and cutcoef arrays indicating the start of each cut. This array is of length ncuts+1 with the last element, start[ncuts], being where cut ncuts+1 would start.

colind - Integer array of length start[ncuts] containing the column indices in the cuts.

cutcoef - Double array of length start[ncuts] containing the matrix values for the cuts.

Throws:

XPRSprobException

delCuts
```
public void delCuts(int basis,
                    int cuttype,
                    int interp,
                    double delta,
                    int ncuts,
                    XPRScut[] cutind)
             throws XPRSprobException
```
Deletes cuts from the matrix at the current node. Cuts from the parent node which have been automatically restored may be deleted as well as cuts added to the current node using addCuts or loadCuts. The cuts to be deleted can be specified in a number of ways. If a cut is ruled out by any one of the criteria it will not be deleted.
Parameters:

basis - Ensures the basis will be valid if set to 1. If set to 0, cuts with non-basic slacks may be deleted.

cuttype - User defined type of the cut to be deleted.
interp - Way in which the cut cuttype is interpreted:
- -1: match all cut types;
- 1: treat cut types as numbers;
- 2: treat cut types as bit maps - delete if any bit matches any bit set in cuttype;
- 3: treat cut types as bit maps - delete if all bits match those set in cuttype.
delta - Only delete cuts with an absolute slack value greater than delta. To delete all the cuts, this argument should be set to XPRS_MINUSINFINITY.

ncuts - Number of cuts to drop if a list of cuts is provided. A value of -1 indicates all cuts.

cutind - Array containing pointers to the cuts which are to be deleted. This array may be null if ncuts is set to -1 otherwise it has length ncuts.

Throws:

XPRSprobException

delCuts
```
public void delCuts(int basis)
             throws XPRSprobException
```
Convenience wrapper for delCuts(int, int, int, double, int, XPRScut[]).

Throws:

XPRSprobException

See Also:

delCuts(int, int, int, double, int, XPRScut[])

delCuts
```
public void delCuts(int basis,
                    int cuttype,
                    int interp)
             throws XPRSprobException
```
Convenience wrapper for delCuts(int, int, int, double, int, XPRScut[]).

Throws:

XPRSprobException

See Also:

delCuts(int, int, int, double, int, XPRScut[])

delCuts

public void delCuts(int basis,
                    int cuttype,
                    int interp,
                    double delta)
             throws XPRSprobException

Convenience wrapper for delCuts(int, int, int, double, int, XPRScut[]).

Throws:: XPRSprobException
See Also:: delCuts(int, int, int, double, int, XPRScut[])

delCuts

public void delCuts(int basis,
                    int ncuts,
                    XPRScut[] cutind)
             throws XPRSprobException

Convenience wrapper for delCuts(int, int, int, double, int, XPRScut[]).

Throws:: XPRSprobException
See Also:: delCuts(int, int, int, double, int, XPRScut[])

delCPCuts
```
public void delCPCuts(int cuttype,
                      int interp,
                      int ncuts,
                      XPRScut[] cutind)
               throws XPRSprobException
```
During the branch and bound search, cuts are stored in the cut pool to be applied at descendant nodes. These cuts may be removed from a given node using delCuts, but if this is to be applied in a large number of cases, it may be preferable to remove the cut completely from the cut pool. This is achieved using delCPCuts.
Parameters:

cuttype - User defined cut type to match against.
interp - Way in which the cut cuttype is interpreted:
- -1: match all cut types;
- 1: treat cut types as numbers;
- 2: treat cut types as bit maps - delete if any bit matches any bit set in cuttype;
- 3: treat cut types as bit maps - delete if all bits match those set in cuttype.
ncuts - The number of cuts to delete. A value of -1 indicates delete all cuts.

cutind - Array containing pointers to the cuts which are to be deleted. This array may be null if ncuts is -1, otherwise it has length ncuts.

Throws:

XPRSprobException

delCPCuts
```
public void delCPCuts()
               throws XPRSprobException
```
Convenience wrapper for delCPCuts(int, int, int, XPRScut[]).

Throws:

XPRSprobException

See Also:

delCPCuts(int, int, int, XPRScut[])

delCPCuts
```
public void delCPCuts(int cuttype,
                      int interp)
               throws XPRSprobException
```
Convenience wrapper for delCPCuts(int, int, int, XPRScut[]).

Throws:

XPRSprobException

See Also:

delCPCuts(int, int, int, XPRScut[])

delCPCuts

public void delCPCuts(int ncuts,
                      XPRScut[] cutind)
               throws XPRSprobException

Convenience wrapper for delCPCuts(int, int, int, XPRScut[]).

Throws:: XPRSprobException
See Also:: delCPCuts(int, int, int, XPRScut[])

getCutList
```
public void getCutList(int cuttype,
                       int interp,
                       IntHolder p_ncuts,
                       int maxcuts,
                       XPRScut[] cutind)
                throws XPRSprobException
```
Retrieves a list of cut pointers for the cuts active at the current node.
Parameters:

cuttype - User defined type of the cuts to be returned. A value of -1 indicates return all active cuts.
interp - Way in which the cut type is interpreted:
- -1: get all cuts;
- 1: treat cut types as numbers;
- 2: treat cut types as bit maps - get cut if any bit matches any bit set in cuttype;
- 3: treat cut types as bit maps - get cut if all bits match those set in cuttype.
p_ncuts - Pointer to the integer where the number of active cuts of type cuttype will be returned.

maxcuts - Maximum number of cuts to be retrieved.

cutind - Array of length maxcuts where the pointers to the cuts will be returned.

Throws:

XPRSprobException

getCutList

public int getCutList(int cuttype,
                      int interp,
                      int maxcuts,
                      XPRScut[] cutind)
               throws XPRSprobException

Convenience wrapper for getCutList(int, int, IntHolder, int, XPRScut[]).

Throws:: XPRSprobException
See Also:: getCutList(int, int, IntHolder, int, XPRScut[])

getCutList
```
public int getCutList(int maxcuts,
                      XPRScut[] cutind)
               throws XPRSprobException
```
Convenience wrapper for getCutList(int, int, IntHolder, int, XPRScut[]).

Throws:

XPRSprobException

See Also:

getCutList(int, int, IntHolder, int, XPRScut[])

getCPCutList
```
public void getCPCutList(int cuttype,
                         int interp,
                         double delta,
                         IntHolder p_ncuts,
                         int maxcuts,
                         XPRScut[] cutind,
                         double[] viol)
                  throws XPRSprobException
```
Returns a list of cut indices from the cut pool.
Parameters:

cuttype - The user defined type of the cuts to be returned.
interp - Way in which the cut type is interpreted:
- -1: get all cuts;
- 1: treat cut types as numbers;
- 2: treat cut types as bit maps - get cut if any bit matches any bit set in cuttype;
- 3: treat cut types as bit maps - get cut if all bits match those set in cuttype.
delta - Only those cuts with a signed violation greater than delta will be returned.

p_ncuts - Pointer to the integer where the number of cuts of type cuttype in the cut pool will be returned.

maxcuts - Maximum number of cuts to be returned.

cutind - Array of length maxcuts where the pointers to the cuts will be returned.

viol - Double array of length maxcuts where the values of the signed violations of the cuts will be returned.

Throws:

XPRSprobException

getCPCutList

public int getCPCutList(int cuttype,
                        int interp,
                        double delta,
                        int maxcuts,
                        XPRScut[] cutind,
                        double[] viol)
                 throws XPRSprobException

Convenience wrapper for getCPCutList(int, int, double, IntHolder, int, XPRScut[], double[]).

Throws:: XPRSprobException
See Also:: getCPCutList(int, int, double, IntHolder, int, XPRScut[], double[])

getCPCutList
```
public int getCPCutList(int maxcuts,
                        XPRScut[] cutind,
                        double[] viol)
                 throws XPRSprobException
```
Convenience wrapper for getCPCutList(int, int, double, IntHolder, int, XPRScut[], double[]).

Throws:

XPRSprobException

See Also:

getCPCutList(int, int, double, IntHolder, int, XPRScut[], double[])

getCPCuts
```
public void getCPCuts(XPRScut[] rowind,
                      int ncuts,
                      int maxcoefs,
                      int[] cuttype,
                      byte[] rowtype,
                      int[] start,
                      int[] colind,
                      double[] cutcoef,
                      double[] rhs)
               throws XPRSprobException
```
Returns cuts from the cut pool. A list of cut pointers in the array rowind must be passed to the routine. The columns and elements of the cut will be returned in the regions pointed to by the colind and cutcoef parameters. The columns and elements will be stored contiguously and the starting point of each cut will be returned in the region pointed to by the start parameter.

Parameters:

rowind - Array of length ncuts containing the pointers to the cuts.

ncuts - Number of cuts to be returned.

maxcoefs - Maximum number of column indices of the cuts to be returned.

cuttype - Integer array of length at least ncuts where the cut types will be returned. May be null if not required.

rowtype - Character array of length at least ncuts where the sense of the cuts ( L, G, or E) will be returned. May be null if not required.

start - Integer array of length at least ncuts+1 containing the offsets into the colind and cutcoef arrays. The last element indicates where cut ncuts+1 would start. May be null if not required.

colind - Integer array of length maxcoefs where the column indices of the cuts will be returned. May be null if not required.

cutcoef - Double array of length maxcoefs where the matrix values will be returned. May be null if not required.

rhs - Double array of length at least ncuts where the right hand side elements for the cuts will be returned. May be null if not required.

Throws:

XPRSprobException

getCPCuts
```
public void getCPCuts(XPRScut[] rowind,
                      int ncuts,
                      long maxcoefs,
                      int[] cuttype,
                      byte[] rowtype,
                      long[] start,
                      int[] colind,
                      double[] cutcoef,
                      double[] rhs)
               throws XPRSprobException
```
Returns cuts from the cut pool. A list of cut pointers in the array rowind must be passed to the routine. The columns and elements of the cut will be returned in the regions pointed to by the colind and cutcoef parameters. The columns and elements will be stored contiguously and the starting point of each cut will be returned in the region pointed to by the start parameter.

Parameters:

rowind - Array of length ncuts containing the pointers to the cuts.

ncuts - Number of cuts to be returned.

maxcoefs - Maximum number of column indices of the cuts to be returned.

cuttype - Integer array of length at least ncuts where the cut types will be returned. May be null if not required.

rowtype - Character array of length at least ncuts where the sense of the cuts ( L, G, or E) will be returned. May be null if not required.

start - Integer array of length at least ncuts+1 containing the offsets into the colind and cutcoef arrays. The last element indicates where cut ncuts+1 would start. May be null if not required.

colind - Integer array of length maxcoefs where the column indices of the cuts will be returned. May be null if not required.

cutcoef - Double array of length maxcoefs where the matrix values will be returned. May be null if not required.

rhs - Double array of length at least ncuts where the right hand side elements for the cuts will be returned. May be null if not required.

Throws:

XPRSprobException

loadCuts
```
public void loadCuts(int coltype,
                     int interp,
                     int ncuts,
                     XPRScut[] cutind)
              throws XPRSprobException
```
Loads cuts from the cut pool into the matrix. Without calling loadCuts the cuts will remain in the cut pool but will not be active at the node. Cuts loaded at a node remain active at all descendant nodes unless they are deleted using delCuts.
Parameters:

coltype - Cut type.
interp - The way in which the cut type is interpreted:
- -1: load all cuts;
- 1: treat cut types as numbers;
- 2: treat cut types as bit maps - load cut if any bit matches any bit set in coltype;
- 3: treat cut types as bit maps - 0 load cut if all bits match those set in coltype.
ncuts - Number of cuts to load.

cutind - Array of length ncuts containing pointers to the cuts to be loaded into the matrix. These are pointers returned by either storeCuts or getCPCutList.

Throws:

XPRSprobException

loadCuts
```
public void loadCuts(int coltype,
                     int interp)
              throws XPRSprobException
```
Convenience wrapper for loadCuts(int, int, int, XPRScut[]).

Throws:

XPRSprobException

See Also:

loadCuts(int, int, int, XPRScut[])

loadCuts

public void loadCuts(int ncuts,
                     XPRScut[] cutind)
              throws XPRSprobException

Convenience wrapper for loadCuts(int, int, int, XPRScut[]).

Throws:: XPRSprobException
See Also:: loadCuts(int, int, int, XPRScut[])

storeCuts
```
public void storeCuts(int ncuts,
                      int nodups,
                      int[] cuttype,
                      byte[] rowtype,
                      double[] rhs,
                      int[] start,
                      XPRScut[] cutind,
                      int[] colind,
                      double[] cutcoef)
               throws XPRSprobException
```
Stores cuts into the cut pool, but does not apply them to the current node. These cuts must be explicitly loaded into the matrix using loadCuts or setBranchCuts before they become active.
Parameters:

ncuts - Number of cuts to add.
nodups -
- 0: do not exclude duplicates from the cut pool;
- 1: duplicates are to be excluded from the cut pool;
- 2: duplicates are to be excluded from the cut pool, ignoring cut type.
cuttype - Integer array of length ncuts containing the cut types. The cut types can be any integer and are used to identify the cuts.
rowtype - Character array of length ncuts containing the row types:
- L: indicates a <= row;
- E: indicates an = row;
- G: indicates a >= row.
rhs - Double array of length ncuts containing the right hand side elements for the cuts.

start - Integer array containing offsets into the colind and dmtval arrays indicating the start of each cut. This array is of length ncuts+1 with the last element start[ncuts] being where cut ncuts+1 would start.

cutind - Array of length ncuts where the pointers to the cuts will be returned.

colind - Integer array of length start[ncuts] containing the column indices in the cuts.

cutcoef - Double array of length start[ncuts] containing the matrix values for the cuts.

Throws:

XPRSprobException

storeCuts
```
public void storeCuts(int ncuts,
                      int nodups,
                      int[] cuttype,
                      byte[] rowtype,
                      double[] rhs,
                      long[] start,
                      XPRScut[] cutind,
                      int[] colind,
                      double[] cutcoef)
               throws XPRSprobException
```
Stores cuts into the cut pool, but does not apply them to the current node. These cuts must be explicitly loaded into the matrix using loadCuts or setBranchCuts before they become active.
Parameters:

ncuts - Number of cuts to add.
nodups -
- 0: do not exclude duplicates from the cut pool;
- 1: duplicates are to be excluded from the cut pool;
- 2: duplicates are to be excluded from the cut pool, ignoring cut type.
cuttype - Integer array of length ncuts containing the cut types. The cut types can be any integer and are used to identify the cuts.
rowtype - Character array of length ncuts containing the row types:
- L: indicates a <= row;
- E: indicates an = row;
- G: indicates a >= row.
rhs - Double array of length ncuts containing the right hand side elements for the cuts.

start - Integer array containing offsets into the colind and dmtval arrays indicating the start of each cut. This array is of length ncuts+1 with the last element start[ncuts] being where cut ncuts+1 would start.

cutind - Array of length ncuts where the pointers to the cuts will be returned.

colind - Integer array of length start[ncuts] containing the column indices in the cuts.

cutcoef - Double array of length start[ncuts] containing the matrix values for the cuts.

Throws:

XPRSprobException

presolveRow
```
public void presolveRow(char rowtype,
                        int norigcoefs,
                        int[] origcolind,
                        double[] origrowcoef,
                        double origrhs,
                        int maxcoefs,
                        IntHolder p_ncoefs,
                        int[] colind,
                        double[] rowcoef,
                        DoubleHolder p_rhs,
                        IntHolder p_status)
                 throws XPRSprobException
```
Presolves a row formulated in terms of the original variables such that it can be added to a presolved matrix.
Parameters:
rowtype - The type of the row:
- L: indicates a <= row;
- G: indicates a >= row.
norigcoefs - Number of elements in the origcolind and origrowcoef arrays.

origcolind - Integer array of length norigcoefs containing the column indices of the row to presolve.

origrowcoef - Double array of length norigcoefs containing the non-zero coefficients of the row to presolve.

origrhs - The right-hand side constant of the row to presolve.

maxcoefs - Maximum number of elements to return in the colind and rowcoef arrays.

p_ncoefs - Pointer to the integer where the number of elements in the colind and rowcoef arrays will be returned.

colind - Integer array which will be filled with the column indices of the presolved row. It must be allocated to hold at least COLS elements.

rowcoef - Double array which will be filled with the coefficients of the presolved row. It must be allocated to hold at least COLS elements.

p_rhs - Pointer to the double where the presolved right-hand side will be returned.
p_status - Status of the presolved row:
- -3: Failed to presolve the row due to presolve dual reductions;
- -2: Failed to presolve the row due to presolve duplicate column reductions;
- -1: Failed to presolve the row due to an error. Check the Optimizer error code for the cause;
- 0: The row was successfully presolved;
- 1: The row was presolved, but may be relaxed.
Throws:

XPRSprobException

storeBounds
```
public void storeBounds(int nbounds,
                        int[] colind,
                        byte[] bndtype,
                        double[] bndval,
                        XPRSbounds p_bounds)
                 throws XPRSprobException
```
Stores bounds for node separation using user separate callback function.
Parameters:

nbounds - Number of bounds to store.

colind - Array containing the column indices.
bndtype - Array containing the bounds types:
- U: indicates an upper bound;
- L: indicates a lower bound.
bndval - Array containing the bound values.

p_bounds - Pointer that the user will use to reference the stored bounds for the Optimizer in setBranchBounds.

Throws:

XPRSprobException

storeBounds

public XPRSbounds storeBounds(int nbounds,
                              int[] colind,
                              byte[] bndtype,
                              double[] bndval)
                       throws XPRSprobException

Convenience wrapper for storeBounds(int, int[], byte[], double[], XPRSbounds).

Throws:: XPRSprobException
See Also:: storeBounds(int, int[], byte[], double[], XPRSbounds)

setBranchCuts
```
public void setBranchCuts(int ncuts,
                          XPRScut[] cutind)
                   throws XPRSprobException
```
Specifies the pointers to cuts in the cut pool that are to be applied in order to branch on a user global entity. This routine can only be called from the user separate callback function, addCbSepnode.

Parameters:

ncuts - Number of cuts to apply.

cutind - Array containing the pointers to the cuts in the cut pool that are to be applied. Typically obtained from storeCuts.

Throws:

XPRSprobException

setBranchBounds
```
public void setBranchBounds(XPRSbounds bounds)
                     throws XPRSprobException
```
Specifies the bounds previously stored using storeBounds that are to be applied in order to branch on a user global entity. This routine can only be called from the user separate callback function, addCbSepnode.

Parameters:

bounds - Pointer previously defined in a call to storeBounds that references the stored bounds to be used to separate the node.

Throws:

XPRSprobException

getPivots
```
public void getPivots(int enter,
                      int[] outlist,
                      double[] x,
                      DoubleHolder p_objval,
                      IntHolder p_npivots,
                      int maxpivots)
               throws XPRSprobException
```
Returns a list of potential leaving variables if a specified variable enters the basis.

Parameters:

enter - Index of the specified row or column to enter basis.

outlist - Integer array of length at least maxpivots to hold list of potential leaving variables. May be null if not required.

x - Double array of length ROWS + SPAREROWS + COLS to hold the values of all the variables that would result if enter entered the basis. May be null if not required.

p_objval - Pointer to a double where the objective function value that would result if enter entered the basis will be returned.

p_npivots - Pointer to an integer where the actual number of potential leaving variables will be returned.

maxpivots - Maximum number of potential leaving variables to return.

Throws:

XPRSprobException

writeProb
```
public void writeProb(java.lang.String filename,
                      java.lang.String flags)
               throws XPRSprobException
```
Writes the current problem to an MPS or LP file.
Parameters:

filename - A string of up to MAXPROBNAMELENGTH characters to contain the file name to which the problem is to be written. If omitted, the default problem_name is used with a .mps extension, unless the l flag is used in which case the extension is .lp.
flags - Flags, which can be one or more of the following:
- o: one element per line;
- n: output the scaled problem;
- s: scrambled vector names;
- l: output in LP format;
- p: output values in full precision (obsolete as this is now default behavior);
- t: omit the Xpress header in LP format;
- v: use the provided filename verbatim, without appending the .mps or .lp extension;
- z: compress the output file.
Throws:

XPRSprobException

writeProb
```
public void writeProb(java.lang.String filename)
               throws XPRSprobException
```
Convenience wrapper for writeProb(String, String).

Throws:

XPRSprobException

See Also:

writeProb(String, String)

writeProb
```
public void writeProb()
               throws XPRSprobException
```
Convenience wrapper for writeProb(String, String).

Throws:

XPRSprobException

See Also:

writeProb(String, String)

calcSlacks
```
public void calcSlacks(double[] solution,
                       double[] slacks)
                throws XPRSprobException
```
Calculates the row slack values for a given solution.

Parameters:

solution - Double array of length COLS that holds the solution to calculate the slacks for.

slacks - Double array of length ROWS in which the calculated row slacks are returned.

Throws:

XPRSprobException

calcReducedCosts
```
public void calcReducedCosts(double[] duals,
                             double[] solution,
                             double[] djs)
                      throws XPRSprobException
```
Calculates the reduced cost values for a given (row) dual solution.

Parameters:

duals - Double array of length ROWS that holds the dual solution to calculate the reduced costs for.

solution - Optional double array of length COLS that holds the primal solution. This is necessary for quadratic problems.

djs - Double array of length COLS in which the calculated reduced costs are returned.

Throws:

XPRSprobException

calcObjective
```
public void calcObjective(double[] solution,
                          DoubleHolder p_objval)
                   throws XPRSprobException
```
Calculates the objective value of a given solution.

Parameters:

solution - Double array of length COLS that holds the solution.

p_objval - Pointer to a double in which the calculated objective value is returned.

Throws:

XPRSprobException

calcSolInfo
```
public void calcSolInfo(double[] solution,
                        double[] duals,
                        int property,
                        DoubleHolder p_value)
                 throws XPRSprobException
```
Calculates the required property of a solution, like maximum infeasibility of a given primal and dual solution.
Parameters:

solution - Double array of length COLS that holds the solution.

duals - Double array of length ROWS that holds the dual solution.
property - Defined the property to be calculated.
- XPRS_SOLINFO_ABSPRIMALINFEAS: the calculated maximum absolute primal infeasibility is returned.
- XPRS_SOLINFO_RELPRIMALINFEAS: the calculated maximum relative primal infeasibility is returned.
- XPRS_SOLINFO_ABSDUALINFEAS: the calculated maximum absolute dual infeasibility is returned.
- XPRS_SOLINFO_RELDUALINFEAS: the calculated maximum relative dual infeasibility is returned.
- XPRS_SOLINFO_MAXMIPFRACTIONAL: the calculated maximum absolute MIP fractionality or SOS infeasibility.
- XPRS_SOLINFO_ABSMIPINFEAS: the calculated maximum absolute MIP infeasibility (including delayed rows, indicators, general and piecewise linear constraints) is returned.
- XPRS_SOLINFO_RELMIPINFEAS: the calculated maximum relative MIP infeasibility (including delayed rows, indicators, general and piecewise linear constraints) is returned.
p_value - Pointer to a double where the calculated value is returned.

Throws:

XPRSprobException

getRowType
```
public void getRowType(byte[] rowtype,
                       int first,
                       int last)
                throws XPRSprobException
```
Returns the row types for the rows in a given range.
Parameters:
rowtype - Character array of length last-first+1 characters where the row types will be returned:
- N: indicates a free constraint;
- L: indicates a <= constraint;
- E: indicates an = constraint;
- G: indicates a >= constraint;
- R: indicates a range constraint.
first - First row in the range.

last - Last row in the range.

Throws:

XPRSprobException

getRowType
```
public byte getRowType(int x)
                throws XPRSprobException
```
Convenience wrapper for getRowType(byte[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

getRowType(byte[], int, int)

getPresolveBasis
```
public void getPresolveBasis(int[] rowstat,
                             int[] colstat)
                      throws XPRSprobException
```
Returns the current basis from memory into the user's data areas. If the problem is presolved, the presolved basis will be returned. Otherwise the original basis will be returned.
Parameters:
rowstat - Integer array of length ROWS to the basis status of the stack, surplus or artificial variable associated with each row. The status will be one of:
- 0: slack, surplus or artificial is non-basic at lower bound;
- 1: slack, surplus or artificial is basic;
- 2: slack or surplus is non-basic at upper bound.
May be null if not required.
colstat - Integer array of length COLS to hold the basis status of the columns in the constraint matrix. The status will be one of:
- 0: variable is non-basic at lower bound, or superbasic at zero if the variable has no lower bound;
- 1: variable is basic;
- 2: variable is at upper bound;
- 3: variable is super-basic.
May be null if not required.
Throws:

XPRSprobException

getColType
```
public void getColType(byte[] coltype,
                       int first,
                       int last)
                throws XPRSprobException
```
Returns the column types for the columns in a given range.
Parameters:
coltype - Character array of length last-first+1 where the column types will be returned:
- C: indicates a continuous variable;
- I: indicates an integer variable;
- B: indicates a binary variable;
- S: indicates a semi-continuous variable;
- R: indicates a semi-continuous integer variable;
- P: indicates a partial integer variable.
first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getColType
```
public byte getColType(int x)
                throws XPRSprobException
```
Convenience wrapper for getColType(byte[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

getColType(byte[], int, int)

getQRowCoeff
```
public void getQRowCoeff(int row,
                         int rowqcol1,
                         int rowqcol2,
                         DoubleHolder p_rowqcoef)
                  throws XPRSprobException
```
Returns a single quadratic constraint coefficient corresponding to the variable pair ( rowqcol1, rowqcol2) of the Hessian of a given constraint.

Parameters:

row - The quadratic row where the coefficient is to be looked up.

rowqcol1 - Column index for the first variable in the quadratic term.

rowqcol2 - Column index for the second variable in the quadratic term.

p_rowqcoef - Pointer to a double value where the objective function coefficient is to be placed.

Throws:

XPRSprobException

getQRowCoeff

public double getQRowCoeff(int row,
                           int rowqcol1,
                           int rowqcol2)
                    throws XPRSprobException

Convenience wrapper for getQRowCoeff(int, int, int, DoubleHolder).

Throws:: XPRSprobException
See Also:: getQRowCoeff(int, int, int, DoubleHolder)

getQRowQMatrix
```
public void getQRowQMatrix(int row,
                           int[] start,
                           int[] colind,
                           double[] rowqcoef,
                           int maxcoefs,
                           IntHolder p_ncoefs,
                           int first,
                           int last)
                    throws XPRSprobException
```
Returns the nonzeros in a quadratic constraint coefficients matrix for the columns in a given range. To achieve maximum efficiency, getQRowQMatrix returns the lower triangular part of this matrix only.

Parameters:

row - Index of the row for which the quadratic coefficients are to be returned.

start - Integer array which will be filled with indices indicating the starting offsets in the colind and dobjval arrays for each requested column. It must be length of at least last-first+2. Column i starts at position start[i] in the mrwind and dmatval arrays, and has start[i+1]-start[i] elements in it. May be null if maxcoefs is 0.

colind - Integer array of length maxcoefs which will be filled with the column indices of the nonzero elements in the lower triangular part of Q. May be null if maxcoefs is 0.

rowqcoef - Double array of length maxcoefs which will be filled with the nonzero element values. May be null if maxcoefs is 0.

maxcoefs - Number of elements to be saved in colind and rowqcoef. If maxcoefs < *p_ncoefs, only maxcoefs elements are written.

p_ncoefs - Pointer to the integer where the number of nonzero elements in the queried columns will be returned. If the number of nonzero elements is greater than maxcoefs, then only maxcoefs elements will be returned. If p_ncoefs is smaller than maxcoefs, then only p_ncoefs will be returned.

first - First column in the range.

last - Last column in the range.

Throws:

XPRSprobException

getQRowQMatrix

public int getQRowQMatrix(int row,
                          int[] start,
                          int[] colind,
                          double[] rowqcoef,
                          int maxcoefs,
                          int first,
                          int last)
                   throws XPRSprobException

Convenience wrapper for getQRowQMatrix(int, int[], int[], double[], int, IntHolder, int, int).

Throws:: XPRSprobException
See Also:: getQRowQMatrix(int, int[], int[], double[], int, IntHolder, int, int)

getQRowQMatrixTriplets
```
public void getQRowQMatrixTriplets(int row,
                                   IntHolder p_ncoefs,
                                   int[] rowqcol1,
                                   int[] rowqcol2,
                                   double[] rowqcoef)
                            throws XPRSprobException
```
Returns the nonzeros in a quadratic constraint coefficients matrix as triplets (index pairs with coefficients). To achieve maximum efficiency, getQRowQMatrixTriplets returns the lower triangular part of this matrix only.

Parameters:

row - Index of the row for which the quadratic coefficients are to be returned.

p_ncoefs - Argument used to return the number of quadratic coefficients in the row.

rowqcol1 - First index in the triplets. May be null if not required.

rowqcol2 - Second index in the triplets. May be null if not required.

rowqcoef - Coefficients in the triplets. May be null if not required.

Throws:

XPRSprobException

getQRowQMatrixTriplets

public int getQRowQMatrixTriplets(int row,
                                  int[] rowqcol1,
                                  int[] rowqcol2,
                                  double[] rowqcoef)
                           throws XPRSprobException

Convenience wrapper for getQRowQMatrixTriplets(int, IntHolder, int[], int[], double[]).

Throws:: XPRSprobException
See Also:: getQRowQMatrixTriplets(int, IntHolder, int[], int[], double[])

chgQRowCoeff
```
public void chgQRowCoeff(int row,
                         int rowqcol1,
                         int rowqcol2,
                         double rowqcoef)
                  throws XPRSprobException
```
Changes a single quadratic coefficient in a row.

Parameters:

row - Index of the row where the quadratic matrix is to be changed.

rowqcol1 - First index of the coefficient to be changed.

rowqcol2 - Second index of the coefficient to be changed.

rowqcoef - The new coefficient.

Throws:

XPRSprobException

getQRows
```
public void getQRows(IntHolder p_nrows,
                     int[] rowind)
              throws XPRSprobException
```
Returns the list indices of the rows that have quadratic coefficients.

Parameters:

p_nrows - Used to return the number of quadratic constraints in the matrix.

rowind - Array of length *p_nrows used to return the indices of rows with quadratic coefficients in them. May be null if not required.

Throws:

XPRSprobException

getQRows
```
public int getQRows(int[] rowind)
             throws XPRSprobException
```
Convenience wrapper for getQRows(IntHolder, int[]).

Throws:

XPRSprobException

See Also:

getQRows(IntHolder, int[])

getQRows
```
public int getQRows()
             throws XPRSprobException
```
Convenience wrapper for getQRows(IntHolder, int[]).

Throws:

XPRSprobException

See Also:

getQRows(IntHolder, int[])

analyzeRows
```
public int analyzeRows(int x)
                throws XPRSprobException
```
Convenience wrapper for analyzeRows(int[], int, int). This overload retrieves and returns the information for only a single element instead of an array.

Parameters:

x - The index of the element to query.

Returns:

The requested information.

Throws:

XPRSprobException

See Also:

analyzeRows(int[], int, int)

save
```
public void save()
          throws XPRSprobException
```
Saves the current data structures, i.e. matrices, control settings and problem attribute settings to file and terminates the run so that optimization can be resumed later.

Throws:

XPRSprobException

saveAs

public void saveAs(java.lang.String filename)
            throws XPRSprobException

Throws:: XPRSprobException

refineMipSol
```
public void refineMipSol(int options,
                         java.lang.String flags,
                         double[] solution,
                         double[] refined,
                         IntHolder p_status)
                  throws XPRSprobException
```
Deprecated.

Executes the MIP solution refiner.
Parameters:
options - Refinement options:
- 0: Reducing MIP fractionality is priority (If bit 10 of REFINEOPS is set, will switch to other mode if unsuccessful).
- 1: Reducing LP infeasibility is priority.
flags - Flags passed to any optimization calls during refinement.

solution - The MIP solution to refine. Must be a valid MIP solution.

refined - The refined MIP solution in case of success
p_status - Refinement results:
- 0: An error has occurred
- 1: The solution has been refined
- 2: Current solution meets target criteria
- 3: Solution cannot be refined
- 5: The solution has been refined, but MIP fractionality could not be reduced.
Throws:

XPRSprobException

addMipSol
```
public void addMipSol(int length,
                      double[] solval,
                      int[] colind,
                      java.lang.String name)
               throws XPRSprobException
```
Adds a new feasible, infeasible or partial MIP solution for the problem to the Optimizer.

Parameters:

length - Number of columns for which a value is provided.

solval - Double array of length length containing solution values.

colind - Optional integer array of length length containing the column indices for the solution values provided in solval. Should be null when length is equal to COLS, in which case it is assumed that solval provides a complete solution vector.

name - An optional name to associate with the solution. Can be null.

Throws:

XPRSprobException

getCutSlack
```
public void getCutSlack(XPRScut cutind,
                        DoubleHolder p_slack)
                 throws XPRSprobException
```
Used to calculate the slack value of a cut with respect to the current LP relaxation solution. The slack is calculated from the cut itself, and might be requested for any cut (even if it is not currently loaded into the problem).

Parameters:

cutind - Pointer of the cut for which the slack is to be calculated.

p_slack - Double pointer where the value of the slack is returned.

Throws:

XPRSprobException

getCutMap
```
public void getCutMap(int ncuts,
                      XPRScut[] cutind,
                      int[] cutmap)
               throws XPRSprobException
```
Used to return in which rows a list of cuts are currently loaded into the Optimizer. This is useful for example to retrieve the duals associated with active cuts.

Parameters:

ncuts - Number of cuts in the cutind array.

cutind - Pointer array to the cuts for which the row index is requested.

cutmap - Integer array of length ncuts, where the row indices are returned.

Throws:

XPRSprobException

getPresolveSol
```
public void getPresolveSol(double[] x,
                           double[] slack,
                           double[] duals,
                           double[] djs)
                    throws XPRSprobException
```
Returns the solution for the presolved problem from memory.

Parameters:

x - Double array of length COLS where the values of the primal variables will be returned. May be null if not required.

slack - Double array of length ROWS where the values of the slack variables will be returned. May be null if not required.

duals - Double array of length ROWS where the values of the dual variables will be returned. May be null if not required.

djs - Double array of length COLS where the reduced cost for each variable will be returned. May be null if not required.

Throws:

XPRSprobException

getPresolveSol
```
public void getPresolveSol(double[] x)
                    throws XPRSprobException
```
Convenience wrapper for getPresolveSol(double[], double[], double[], double[]).

Throws:

XPRSprobException

See Also:

getPresolveSol(double[], double[], double[], double[])

getLpSol
```
public void getLpSol(double[] x,
                     double[] slack,
                     double[] duals,
                     double[] djs)
              throws XPRSprobException
```
Used to obtain the LP solution values following optimization.

Parameters:

x - Double array of length ORIGINALCOLS where the values of the primal variables will be returned. May be null if not required.

slack - Double array of length ORIGINALROWS where the values of the slack variables will be returned. May be null if not required.

duals - Double array of length ORIGINALROWS where the values of the dual variables ( c_B^TB^-1) will be returned. May be null if not required.

djs - Double array of length ORIGINALCOLS where the reduced cost for each variable ( c^T-c_B^TB^-1A) will be returned. May be null if not required.

Throws:

XPRSprobException

getLpSol
```
public void getLpSol(double[] x)
              throws XPRSprobException
```
Convenience wrapper for getLpSol(double[], double[], double[], double[]).

Throws:

XPRSprobException

See Also:

getLpSol(double[], double[], double[], double[])

getLpSolVal
```
public void getLpSolVal(int col,
                        int row,
                        DoubleHolder p_x,
                        DoubleHolder p_slack,
                        DoubleHolder p_dual,
                        DoubleHolder p_dj)
                 throws XPRSprobException
```
Used to obtain a single LP solution value following optimization.

Parameters:

col - Column index of the variable for which to return the solution value.

row - Row index of the constraint for which to return the solution value.

p_x - Double pointer where the value of the primal variable will be returned. May be null if not required.

p_slack - Double pointer where the value of the slack variable will be returned. May be null if not required.

p_dual - Double pointer where the value of the dual variable ( c_B^TB^-1) will be returned. May be null if not required.

p_dj - Double pointer where the reduced cost for the variable ( c^T-c_B^TB^-1A) will be returned. May be null if not required.

Throws:

XPRSprobException

getMipSol
```
public void getMipSol(double[] x,
                      double[] slack)
               throws XPRSprobException
```
Used to obtain the solution values of the last MIP solution that was found.

Parameters:

x - Double array of length ORIGINALCOLS where the values of the primal variables will be returned. May be null if not required.

slack - Double array of length ORIGINALROWS where the values of the slack variables will be returned. May be null if not required.

Throws:

XPRSprobException

getMipSol
```
public void getMipSol(double[] x)
               throws XPRSprobException
```
Convenience wrapper for getMipSol(double[], double[]).

Throws:

XPRSprobException

See Also:

getMipSol(double[], double[])

getMipSolVal
```
public void getMipSolVal(int col,
                         int row,
                         DoubleHolder p_x,
                         DoubleHolder p_slack)
                  throws XPRSprobException
```
Used to obtain a single solution value of the last MIP solution that was found.

Parameters:

col - Column index of the variable for which to return the solution value.

row - Row index of the constraint for which to return the solution value.

p_x - Double pointer where the value of the primal variable will be returned. May be null if not required.

p_slack - Double pointer where the value of the slack variable will be returned. May be null if not required.

Throws:

XPRSprobException

chgBounds
```
public void chgBounds(int nbounds,
                      int[] colind,
                      byte[] bndtype,
                      double[] bndval)
               throws XPRSprobException
```
Used to change the bounds on columns in the matrix.
Parameters:

nbounds - Number of bounds to change.

colind - Integer array of size nbounds containing the indices of the columns on which the bounds will change.
bndtype - Character array of length nbounds indicating the type of bound to change:
- U: indicates change the upper bound;
- L: indicates change the lower bound;
- B: indicates change both bounds, i.e. fix the column.
bndval - Double array of length nbounds giving the new bound values.

Throws:

XPRSprobException

chgObj
```
public void chgObj(int ncols,
                   int[] colind,
                   double[] objcoef)
            throws XPRSprobException
```
Used to change the objective function coefficients.

Parameters:

ncols - Number of objective function coefficient elements to change.

colind - Integer array of length ncols containing the indices of the columns on which the range elements will change. An index of -1 indicates that the fixed part of the objective function on the right hand side should change.

objcoef - Double array of length ncols giving the new objective function coefficients.

Throws:

XPRSprobException

chgObj
```
public void chgObj(int x,
                   double value)
            throws XPRSprobException
```
Convenience wrapper for chgObj(int, int[], double[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

chgObj(int, int[], double[])

chgCoef
```
public void chgCoef(int row,
                    int col,
                    double coef)
             throws XPRSprobException
```
Used to change a single coefficient in the matrix. If the coefficient does not already exist, a new coefficient will be added to the matrix. If many coefficients are being added to a row of the matrix, it may be more efficient to delete the old row of the matrix and add a new row.

Parameters:

row - Row index for the coefficient.

col - Column index for the coefficient.

coef - New value for the coefficient. If coef is zero, any existing coefficient will be deleted.

Throws:

XPRSprobException

chgMCoef
```
public void chgMCoef(int ncoefs,
                     int[] rowind,
                     int[] colind,
                     double[] rowcoef)
              throws XPRSprobException
```
Used to change multiple coefficients in the matrix. If any coefficient does not already exist, it will be added to the matrix. If many coefficients are being added to a row of the matrix, it may be more efficient to delete the old row of the matrix and add a new one.

Parameters:

ncoefs - Number of new coefficients.

rowind - Integer array of length ncoefs containing the row indices of the coefficients to be changed.

colind - Integer array of length ncoefs containing the column indices of the coefficients to be changed.

rowcoef - Double array of length ncoefs containing the new coefficient values. If an element of rowcoef is zero, the coefficient will be deleted.

Throws:

XPRSprobException

chgMCoef
```
public void chgMCoef(long ncoefs,
                     int[] rowind,
                     int[] colind,
                     double[] rowcoef)
              throws XPRSprobException
```
Used to change multiple coefficients in the matrix. If any coefficient does not already exist, it will be added to the matrix. If many coefficients are being added to a row of the matrix, it may be more efficient to delete the old row of the matrix and add a new one.

Parameters:

ncoefs - Number of new coefficients.

rowind - Integer array of length ncoefs containing the row indices of the coefficients to be changed.

colind - Integer array of length ncoefs containing the column indices of the coefficients to be changed.

rowcoef - Double array of length ncoefs containing the new coefficient values. If an element of rowcoef is zero, the coefficient will be deleted.

Throws:

XPRSprobException

chgMQObj
```
public void chgMQObj(int ncoefs,
                     int[] objqcol1,
                     int[] objqcol2,
                     double[] objqcoef)
              throws XPRSprobException
```
Used to change multiple quadratic coefficients in the objective function. If any of the coefficients does not exist already, new coefficients will be added to the objective function.

Parameters:

ncoefs - The number of coefficients to change.

objqcol1 - Integer array of size ncol containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size ncol containing the column index of the second variable in each quadratic term.

objqcoef - New values for the coefficients. If an entry in objqcoef is 0, the corresponding entry will be deleted. These are the coefficients of the quadratic Hessian matrix.

Throws:

XPRSprobException

chgMQObj
```
public void chgMQObj(long ncoefs,
                     int[] objqcol1,
                     int[] objqcol2,
                     double[] objqcoef)
              throws XPRSprobException
```
Used to change multiple quadratic coefficients in the objective function. If any of the coefficients does not exist already, new coefficients will be added to the objective function.

Parameters:

ncoefs - The number of coefficients to change.

objqcol1 - Integer array of size ncol containing the column index of the first variable in each quadratic term.

objqcol2 - Integer array of size ncol containing the column index of the second variable in each quadratic term.

objqcoef - New values for the coefficients. If an entry in objqcoef is 0, the corresponding entry will be deleted. These are the coefficients of the quadratic Hessian matrix.

Throws:

XPRSprobException

chgQObj
```
public void chgQObj(int objqcol1,
                    int objqcol2,
                    double objqcoef)
             throws XPRSprobException
```
Used to change a single quadratic coefficient in the objective function corresponding to the variable pair (objqcol1,objqcol2) of the Hessian matrix.

Parameters:

objqcol1 - Column index for the first variable in the quadratic term.

objqcol2 - Column index for the second variable in the quadratic term.

objqcoef - New value for the coefficient in the quadratic Hessian matrix. If an entry in objqcoef is 0, the corresponding entry will be deleted.

Throws:

XPRSprobException

chgRHS
```
public void chgRHS(int nrows,
                   int[] rowind,
                   double[] rhs)
            throws XPRSprobException
```
Used to change right—hand side values of the problem.

Parameters:

nrows - Number of right hand side values to change.

rowind - Integer array of length nrows containing the indices of the rows on which the right hand side values will change.

rhs - Double array of length nrows giving the right hand side values.

Throws:

XPRSprobException

chgRHS
```
public void chgRHS(int x,
                   double value)
            throws XPRSprobException
```
Convenience wrapper for chgRHS(int, int[], double[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

chgRHS(int, int[], double[])

chgRHSrange
```
public void chgRHSrange(int nrows,
                        int[] rowind,
                        double[] rng)
                 throws XPRSprobException
```
Used to change the range for a row of the problem matrix.

Parameters:

nrows - Number of range elements to change.

rowind - Integer array of length nrows containing the indices of the rows on which the range elements will change.

rng - Double array of length nrows giving the range values.

Throws:

XPRSprobException

chgRHSrange
```
public void chgRHSrange(int x,
                        double value)
                 throws XPRSprobException
```
Convenience wrapper for chgRHSrange(int, int[], double[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

chgRHSrange(int, int[], double[])

chgRowType
```
public void chgRowType(int nrows,
                       int[] rowind,
                       byte[] rowtype)
                throws XPRSprobException
```
Used to change the type of a row in the matrix.
Parameters:

nrows - Number of rows to change.

rowind - Integer array of length nrows containing the indices of the rows.
rowtype - Character array of length nrows giving the new row types:
- L: indicates a <= row;
- E: indicates an = row;
- G: indicates a >= row;
- R: indicates a range row;
- N: indicates a free row.
Throws:

XPRSprobException

chgRowType
```
public void chgRowType(int x,
                       byte value)
                throws XPRSprobException
```
Convenience wrapper for chgRowType(int, int[], byte[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

chgRowType(int, int[], byte[])

global
```
public void global()
            throws XPRSprobException
```
Deprecated. you should use lpOptimize(java.lang.String) or mipOptimize(java.lang.String) instead of minim/maxim/global

Throws:

XPRSprobException

nlpDelCoefs
```
public void nlpDelCoefs(int x,
                        int value)
                 throws XPRSprobException
```
Convenience wrapper for nlpDelCoefs(int, int[], int[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

nlpDelCoefs(int, int[], int[])

nlpSetInitVal
```
public void nlpSetInitVal(int x,
                          double value)
                   throws XPRSprobException
```
Convenience wrapper for nlpSetInitVal(int, int[], double[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

nlpSetInitVal(int, int[], double[])

nlpSetDetRow
```
public void nlpSetDetRow(int x,
                         int value)
                  throws XPRSprobException
```
Convenience wrapper for nlpSetDetRow(int, int[], int[]). This function only modifies a single element.

Throws:

XPRSprobException

See Also:

nlpSetDetRow(int, int[], int[])

addLpLogListener
```
public void addLpLogListener(XPRSlpLogListener listener)
                      throws XPRSexception
```
Add a listener for the LpLog callback. Note that an object can have multiple LpLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all LpLog listeners will be removed.)

Throws:

XPRSexception

addLpLogListener
```
public void addLpLogListener(XPRSlpLogListener listener,
                             java.lang.Object data)
                      throws XPRSexception
```
Add a listener for the LpLog callback. Note that an object can have multiple LpLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all LpLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addLpLogListener
```
public void addLpLogListener(XPRSlpLogListener listener,
                             int priority)
                      throws XPRSexception
```
Add a listener for the LpLog callback. Note that an object can have multiple LpLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all LpLog listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addLpLogListener
```
public void addLpLogListener(XPRSlpLogListener listener,
                             java.lang.Object data,
                             int priority)
                      throws XPRSexception
```
Add a listener for the LpLog callback. Note that an object can have multiple LpLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all LpLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeLpLogListener

public void removeLpLogListener(XPRSlpLogListener listener)
                         throws XPRSexception

Removes the given LpLog listener from the object.

Throws:: XPRSexception

removeLpLogListener

public void removeLpLogListener(XPRSlpLogListener listener,
                                java.lang.Object data)
                         throws XPRSexception

Removes the given LpLog listener with the given data value from the object.

Throws:: XPRSexception

removeLpLogListener
```
public void removeLpLogListener()
                         throws XPRSexception
```
Removes all LpLog listeners from the object. @deprecated as of Xpress 7.1, please use removeLpLogListener(XPRSlpLogListener) or removeLpLogListeners()

Throws:

XPRSexception

removeLpLogListeners

public void removeLpLogListeners()
                          throws XPRSexception

Remove all listeners for the LpLog callback

Throws:: XPRSexception

addGlobalLogListener
```
public void addGlobalLogListener(XPRSglobalLogListener listener)
                          throws XPRSexception
```
Add a listener for the GlobalLog callback. Note that an object can have multiple GlobalLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GlobalLog listeners will be removed.)

Throws:

XPRSexception

addGlobalLogListener
```
public void addGlobalLogListener(XPRSglobalLogListener listener,
                                 java.lang.Object data)
                          throws XPRSexception
```
Add a listener for the GlobalLog callback. Note that an object can have multiple GlobalLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GlobalLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addGlobalLogListener
```
public void addGlobalLogListener(XPRSglobalLogListener listener,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the GlobalLog callback. Note that an object can have multiple GlobalLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GlobalLog listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addGlobalLogListener
```
public void addGlobalLogListener(XPRSglobalLogListener listener,
                                 java.lang.Object data,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the GlobalLog callback. Note that an object can have multiple GlobalLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GlobalLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeGlobalLogListener

public void removeGlobalLogListener(XPRSglobalLogListener listener)
                             throws XPRSexception

Removes the given GlobalLog listener from the object.

Throws:: XPRSexception

removeGlobalLogListener

public void removeGlobalLogListener(XPRSglobalLogListener listener,
                                    java.lang.Object data)
                             throws XPRSexception

Removes the given GlobalLog listener with the given data value from the object.

Throws:: XPRSexception

removeGlobalLogListener
```
public void removeGlobalLogListener()
                             throws XPRSexception
```
Removes all GlobalLog listeners from the object. @deprecated as of Xpress 7.1, please use removeGlobalLogListener(XPRSglobalLogListener) or removeGlobalLogListeners()

Throws:

XPRSexception

removeGlobalLogListeners

public void removeGlobalLogListeners()
                              throws XPRSexception

Remove all listeners for the GlobalLog callback

Throws:: XPRSexception

addCutLogListener
```
public void addCutLogListener(XPRScutLogListener listener)
                       throws XPRSexception
```
Add a listener for the CutLog callback. Note that an object can have multiple CutLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutLog listeners will be removed.)

Throws:

XPRSexception

addCutLogListener
```
public void addCutLogListener(XPRScutLogListener listener,
                              java.lang.Object data)
                       throws XPRSexception
```
Add a listener for the CutLog callback. Note that an object can have multiple CutLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addCutLogListener
```
public void addCutLogListener(XPRScutLogListener listener,
                              int priority)
                       throws XPRSexception
```
Add a listener for the CutLog callback. Note that an object can have multiple CutLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutLog listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addCutLogListener
```
public void addCutLogListener(XPRScutLogListener listener,
                              java.lang.Object data,
                              int priority)
                       throws XPRSexception
```
Add a listener for the CutLog callback. Note that an object can have multiple CutLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeCutLogListener

public void removeCutLogListener(XPRScutLogListener listener)
                          throws XPRSexception

Removes the given CutLog listener from the object.

Throws:: XPRSexception

removeCutLogListener

public void removeCutLogListener(XPRScutLogListener listener,
                                 java.lang.Object data)
                          throws XPRSexception

Removes the given CutLog listener with the given data value from the object.

Throws:: XPRSexception

removeCutLogListener
```
public void removeCutLogListener()
                          throws XPRSexception
```
Removes all CutLog listeners from the object. @deprecated as of Xpress 7.1, please use removeCutLogListener(XPRScutLogListener) or removeCutLogListeners()

Throws:

XPRSexception

removeCutLogListeners

public void removeCutLogListeners()
                           throws XPRSexception

Remove all listeners for the CutLog callback

Throws:: XPRSexception

addBarLogListener
```
public void addBarLogListener(XPRSbarLogListener listener)
                       throws XPRSexception
```
Add a listener for the BarLog callback. Note that an object can have multiple BarLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarLog listeners will be removed.)

Throws:

XPRSexception

addBarLogListener
```
public void addBarLogListener(XPRSbarLogListener listener,
                              java.lang.Object data)
                       throws XPRSexception
```
Add a listener for the BarLog callback. Note that an object can have multiple BarLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addBarLogListener
```
public void addBarLogListener(XPRSbarLogListener listener,
                              int priority)
                       throws XPRSexception
```
Add a listener for the BarLog callback. Note that an object can have multiple BarLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarLog listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addBarLogListener
```
public void addBarLogListener(XPRSbarLogListener listener,
                              java.lang.Object data,
                              int priority)
                       throws XPRSexception
```
Add a listener for the BarLog callback. Note that an object can have multiple BarLog listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarLog listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeBarLogListener

public void removeBarLogListener(XPRSbarLogListener listener)
                          throws XPRSexception

Removes the given BarLog listener from the object.

Throws:: XPRSexception

removeBarLogListener

public void removeBarLogListener(XPRSbarLogListener listener,
                                 java.lang.Object data)
                          throws XPRSexception

Removes the given BarLog listener with the given data value from the object.

Throws:: XPRSexception

removeBarLogListener
```
public void removeBarLogListener()
                          throws XPRSexception
```
Removes all BarLog listeners from the object. @deprecated as of Xpress 7.1, please use removeBarLogListener(XPRSbarLogListener) or removeBarLogListeners()

Throws:

XPRSexception

removeBarLogListeners

public void removeBarLogListeners()
                           throws XPRSexception

Remove all listeners for the BarLog callback

Throws:: XPRSexception

addCutMgrListener
```
public void addCutMgrListener(XPRScutMgrListener listener)
                       throws XPRSexception
```
Add a listener for the CutMgr callback. Note that an object can have multiple CutMgr listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutMgr listeners will be removed.)

Throws:

XPRSexception

addCutMgrListener
```
public void addCutMgrListener(XPRScutMgrListener listener,
                              java.lang.Object data)
                       throws XPRSexception
```
Add a listener for the CutMgr callback. Note that an object can have multiple CutMgr listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutMgr listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addCutMgrListener
```
public void addCutMgrListener(XPRScutMgrListener listener,
                              int priority)
                       throws XPRSexception
```
Add a listener for the CutMgr callback. Note that an object can have multiple CutMgr listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutMgr listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addCutMgrListener
```
public void addCutMgrListener(XPRScutMgrListener listener,
                              java.lang.Object data,
                              int priority)
                       throws XPRSexception
```
Add a listener for the CutMgr callback. Note that an object can have multiple CutMgr listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CutMgr listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeCutMgrListener

public void removeCutMgrListener(XPRScutMgrListener listener)
                          throws XPRSexception

Removes the given CutMgr listener from the object.

Throws:: XPRSexception

removeCutMgrListener

public void removeCutMgrListener(XPRScutMgrListener listener,
                                 java.lang.Object data)
                          throws XPRSexception

Removes the given CutMgr listener with the given data value from the object.

Throws:: XPRSexception

removeCutMgrListener
```
public void removeCutMgrListener()
                          throws XPRSexception
```
Removes all CutMgr listeners from the object. @deprecated as of Xpress 7.1, please use removeCutMgrListener(XPRScutMgrListener) or removeCutMgrListeners()

Throws:

XPRSexception

removeCutMgrListeners

public void removeCutMgrListeners()
                           throws XPRSexception

Remove all listeners for the CutMgr callback

Throws:: XPRSexception

addChgNodeListener
```
public void addChgNodeListener(XPRSchgNodeListener listener)
                        throws XPRSexception
```
Add a listener for the ChgNode callback. Note that an object can have multiple ChgNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgNode listeners will be removed.)

Throws:

XPRSexception

addChgNodeListener
```
public void addChgNodeListener(XPRSchgNodeListener listener,
                               java.lang.Object data)
                        throws XPRSexception
```
Add a listener for the ChgNode callback. Note that an object can have multiple ChgNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addChgNodeListener
```
public void addChgNodeListener(XPRSchgNodeListener listener,
                               int priority)
                        throws XPRSexception
```
Add a listener for the ChgNode callback. Note that an object can have multiple ChgNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgNode listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addChgNodeListener
```
public void addChgNodeListener(XPRSchgNodeListener listener,
                               java.lang.Object data,
                               int priority)
                        throws XPRSexception
```
Add a listener for the ChgNode callback. Note that an object can have multiple ChgNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeChgNodeListener

public void removeChgNodeListener(XPRSchgNodeListener listener)
                           throws XPRSexception

Removes the given ChgNode listener from the object.

Throws:: XPRSexception

removeChgNodeListener

public void removeChgNodeListener(XPRSchgNodeListener listener,
                                  java.lang.Object data)
                           throws XPRSexception

Removes the given ChgNode listener with the given data value from the object.

Throws:: XPRSexception

removeChgNodeListener
```
public void removeChgNodeListener()
                           throws XPRSexception
```
Removes all ChgNode listeners from the object. @deprecated as of Xpress 7.1, please use removeChgNodeListener(XPRSchgNodeListener) or removeChgNodeListeners()

Throws:

XPRSexception

removeChgNodeListeners

public void removeChgNodeListeners()
                            throws XPRSexception

Remove all listeners for the ChgNode callback

Throws:: XPRSexception

addOptNodeListener
```
public void addOptNodeListener(XPRSoptNodeListener listener)
                        throws XPRSexception
```
Add a listener for the OptNode callback. Note that an object can have multiple OptNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all OptNode listeners will be removed.)

Throws:

XPRSexception

addOptNodeListener
```
public void addOptNodeListener(XPRSoptNodeListener listener,
                               java.lang.Object data)
                        throws XPRSexception
```
Add a listener for the OptNode callback. Note that an object can have multiple OptNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all OptNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addOptNodeListener
```
public void addOptNodeListener(XPRSoptNodeListener listener,
                               int priority)
                        throws XPRSexception
```
Add a listener for the OptNode callback. Note that an object can have multiple OptNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all OptNode listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addOptNodeListener
```
public void addOptNodeListener(XPRSoptNodeListener listener,
                               java.lang.Object data,
                               int priority)
                        throws XPRSexception
```
Add a listener for the OptNode callback. Note that an object can have multiple OptNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all OptNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeOptNodeListener

public void removeOptNodeListener(XPRSoptNodeListener listener)
                           throws XPRSexception

Removes the given OptNode listener from the object.

Throws:: XPRSexception

removeOptNodeListener

public void removeOptNodeListener(XPRSoptNodeListener listener,
                                  java.lang.Object data)
                           throws XPRSexception

Removes the given OptNode listener with the given data value from the object.

Throws:: XPRSexception

removeOptNodeListener
```
public void removeOptNodeListener()
                           throws XPRSexception
```
Removes all OptNode listeners from the object. @deprecated as of Xpress 7.1, please use removeOptNodeListener(XPRSoptNodeListener) or removeOptNodeListeners()

Throws:

XPRSexception

removeOptNodeListeners

public void removeOptNodeListeners()
                            throws XPRSexception

Remove all listeners for the OptNode callback

Throws:: XPRSexception

addPreNodeListener
```
public void addPreNodeListener(XPRSpreNodeListener listener)
                        throws XPRSexception
```
Add a listener for the PreNode callback. Note that an object can have multiple PreNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreNode listeners will be removed.)

Throws:

XPRSexception

addPreNodeListener
```
public void addPreNodeListener(XPRSpreNodeListener listener,
                               java.lang.Object data)
                        throws XPRSexception
```
Add a listener for the PreNode callback. Note that an object can have multiple PreNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addPreNodeListener
```
public void addPreNodeListener(XPRSpreNodeListener listener,
                               int priority)
                        throws XPRSexception
```
Add a listener for the PreNode callback. Note that an object can have multiple PreNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreNode listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addPreNodeListener
```
public void addPreNodeListener(XPRSpreNodeListener listener,
                               java.lang.Object data,
                               int priority)
                        throws XPRSexception
```
Add a listener for the PreNode callback. Note that an object can have multiple PreNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removePreNodeListener

public void removePreNodeListener(XPRSpreNodeListener listener)
                           throws XPRSexception

Removes the given PreNode listener from the object.

Throws:: XPRSexception

removePreNodeListener

public void removePreNodeListener(XPRSpreNodeListener listener,
                                  java.lang.Object data)
                           throws XPRSexception

Removes the given PreNode listener with the given data value from the object.

Throws:: XPRSexception

removePreNodeListener
```
public void removePreNodeListener()
                           throws XPRSexception
```
Removes all PreNode listeners from the object. @deprecated as of Xpress 7.1, please use removePreNodeListener(XPRSpreNodeListener) or removePreNodeListeners()

Throws:

XPRSexception

removePreNodeListeners

public void removePreNodeListeners()
                            throws XPRSexception

Remove all listeners for the PreNode callback

Throws:: XPRSexception

addInfNodeListener
```
public void addInfNodeListener(XPRSinfNodeListener listener)
                        throws XPRSexception
```
Add a listener for the InfNode callback. Note that an object can have multiple InfNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all InfNode listeners will be removed.)

Throws:

XPRSexception

addInfNodeListener
```
public void addInfNodeListener(XPRSinfNodeListener listener,
                               java.lang.Object data)
                        throws XPRSexception
```
Add a listener for the InfNode callback. Note that an object can have multiple InfNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all InfNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addInfNodeListener
```
public void addInfNodeListener(XPRSinfNodeListener listener,
                               int priority)
                        throws XPRSexception
```
Add a listener for the InfNode callback. Note that an object can have multiple InfNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all InfNode listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addInfNodeListener
```
public void addInfNodeListener(XPRSinfNodeListener listener,
                               java.lang.Object data,
                               int priority)
                        throws XPRSexception
```
Add a listener for the InfNode callback. Note that an object can have multiple InfNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all InfNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeInfNodeListener

public void removeInfNodeListener(XPRSinfNodeListener listener)
                           throws XPRSexception

Removes the given InfNode listener from the object.

Throws:: XPRSexception

removeInfNodeListener

public void removeInfNodeListener(XPRSinfNodeListener listener,
                                  java.lang.Object data)
                           throws XPRSexception

Removes the given InfNode listener with the given data value from the object.

Throws:: XPRSexception

removeInfNodeListener
```
public void removeInfNodeListener()
                           throws XPRSexception
```
Removes all InfNode listeners from the object. @deprecated as of Xpress 7.1, please use removeInfNodeListener(XPRSinfNodeListener) or removeInfNodeListeners()

Throws:

XPRSexception

removeInfNodeListeners

public void removeInfNodeListeners()
                            throws XPRSexception

Remove all listeners for the InfNode callback

Throws:: XPRSexception

addNodeCutoffListener
```
public void addNodeCutoffListener(XPRSnodeCutoffListener listener)
                           throws XPRSexception
```
Add a listener for the NodeCutoff callback. Note that an object can have multiple NodeCutoff listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all NodeCutoff listeners will be removed.)

Throws:

XPRSexception

addNodeCutoffListener
```
public void addNodeCutoffListener(XPRSnodeCutoffListener listener,
                                  java.lang.Object data)
                           throws XPRSexception
```
Add a listener for the NodeCutoff callback. Note that an object can have multiple NodeCutoff listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all NodeCutoff listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addNodeCutoffListener
```
public void addNodeCutoffListener(XPRSnodeCutoffListener listener,
                                  int priority)
                           throws XPRSexception
```
Add a listener for the NodeCutoff callback. Note that an object can have multiple NodeCutoff listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all NodeCutoff listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addNodeCutoffListener
```
public void addNodeCutoffListener(XPRSnodeCutoffListener listener,
                                  java.lang.Object data,
                                  int priority)
                           throws XPRSexception
```
Add a listener for the NodeCutoff callback. Note that an object can have multiple NodeCutoff listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all NodeCutoff listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeNodeCutoffListener

public void removeNodeCutoffListener(XPRSnodeCutoffListener listener)
                              throws XPRSexception

Removes the given NodeCutoff listener from the object.

Throws:: XPRSexception

removeNodeCutoffListener

public void removeNodeCutoffListener(XPRSnodeCutoffListener listener,
                                     java.lang.Object data)
                              throws XPRSexception

Removes the given NodeCutoff listener with the given data value from the object.

Throws:: XPRSexception

removeNodeCutoffListener
```
public void removeNodeCutoffListener()
                              throws XPRSexception
```
Removes all NodeCutoff listeners from the object. @deprecated as of Xpress 7.1, please use removeNodeCutoffListener(XPRSnodeCutoffListener) or removeNodeCutoffListeners()

Throws:

XPRSexception

removeNodeCutoffListeners

public void removeNodeCutoffListeners()
                               throws XPRSexception

Remove all listeners for the NodeCutoff callback

Throws:: XPRSexception

addIntSolListener
```
public void addIntSolListener(XPRSintSolListener listener)
                       throws XPRSexception
```
Add a listener for the IntSol callback. Note that an object can have multiple IntSol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all IntSol listeners will be removed.)

Throws:

XPRSexception

addIntSolListener
```
public void addIntSolListener(XPRSintSolListener listener,
                              java.lang.Object data)
                       throws XPRSexception
```
Add a listener for the IntSol callback. Note that an object can have multiple IntSol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all IntSol listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addIntSolListener
```
public void addIntSolListener(XPRSintSolListener listener,
                              int priority)
                       throws XPRSexception
```
Add a listener for the IntSol callback. Note that an object can have multiple IntSol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all IntSol listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addIntSolListener
```
public void addIntSolListener(XPRSintSolListener listener,
                              java.lang.Object data,
                              int priority)
                       throws XPRSexception
```
Add a listener for the IntSol callback. Note that an object can have multiple IntSol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all IntSol listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeIntSolListener

public void removeIntSolListener(XPRSintSolListener listener)
                          throws XPRSexception

Removes the given IntSol listener from the object.

Throws:: XPRSexception

removeIntSolListener

public void removeIntSolListener(XPRSintSolListener listener,
                                 java.lang.Object data)
                          throws XPRSexception

Removes the given IntSol listener with the given data value from the object.

Throws:: XPRSexception

removeIntSolListener
```
public void removeIntSolListener()
                          throws XPRSexception
```
Removes all IntSol listeners from the object. @deprecated as of Xpress 7.1, please use removeIntSolListener(XPRSintSolListener) or removeIntSolListeners()

Throws:

XPRSexception

removeIntSolListeners

public void removeIntSolListeners()
                           throws XPRSexception

Remove all listeners for the IntSol callback

Throws:: XPRSexception

addPreIntsolListener
```
public void addPreIntsolListener(XPRSpreIntsolListener listener)
                          throws XPRSexception
```
Add a listener for the PreIntsol callback. Note that an object can have multiple PreIntsol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreIntsol listeners will be removed.)

Throws:

XPRSexception

addPreIntsolListener
```
public void addPreIntsolListener(XPRSpreIntsolListener listener,
                                 java.lang.Object data)
                          throws XPRSexception
```
Add a listener for the PreIntsol callback. Note that an object can have multiple PreIntsol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreIntsol listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addPreIntsolListener
```
public void addPreIntsolListener(XPRSpreIntsolListener listener,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the PreIntsol callback. Note that an object can have multiple PreIntsol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreIntsol listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addPreIntsolListener
```
public void addPreIntsolListener(XPRSpreIntsolListener listener,
                                 java.lang.Object data,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the PreIntsol callback. Note that an object can have multiple PreIntsol listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all PreIntsol listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removePreIntsolListener

public void removePreIntsolListener(XPRSpreIntsolListener listener)
                             throws XPRSexception

Removes the given PreIntsol listener from the object.

Throws:: XPRSexception

removePreIntsolListener

public void removePreIntsolListener(XPRSpreIntsolListener listener,
                                    java.lang.Object data)
                             throws XPRSexception

Removes the given PreIntsol listener with the given data value from the object.

Throws:: XPRSexception

removePreIntsolListener
```
public void removePreIntsolListener()
                             throws XPRSexception
```
Removes all PreIntsol listeners from the object. @deprecated as of Xpress 7.1, please use removePreIntsolListener(XPRSpreIntsolListener) or removePreIntsolListeners()

Throws:

XPRSexception

removePreIntsolListeners

public void removePreIntsolListeners()
                              throws XPRSexception

Remove all listeners for the PreIntsol callback

Throws:: XPRSexception

addChgBranchListener
```
public void addChgBranchListener(XPRSchgBranchListener listener)
                          throws XPRSexception
```
Add a listener for the ChgBranch callback. Note that an object can have multiple ChgBranch listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgBranch listeners will be removed.)

Throws:

XPRSexception

addChgBranchListener
```
public void addChgBranchListener(XPRSchgBranchListener listener,
                                 java.lang.Object data)
                          throws XPRSexception
```
Add a listener for the ChgBranch callback. Note that an object can have multiple ChgBranch listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgBranch listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addChgBranchListener
```
public void addChgBranchListener(XPRSchgBranchListener listener,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the ChgBranch callback. Note that an object can have multiple ChgBranch listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgBranch listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addChgBranchListener
```
public void addChgBranchListener(XPRSchgBranchListener listener,
                                 java.lang.Object data,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the ChgBranch callback. Note that an object can have multiple ChgBranch listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChgBranch listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeChgBranchListener

public void removeChgBranchListener(XPRSchgBranchListener listener)
                             throws XPRSexception

Removes the given ChgBranch listener from the object.

Throws:: XPRSexception

removeChgBranchListener

public void removeChgBranchListener(XPRSchgBranchListener listener,
                                    java.lang.Object data)
                             throws XPRSexception

Removes the given ChgBranch listener with the given data value from the object.

Throws:: XPRSexception

removeChgBranchListener
```
public void removeChgBranchListener()
                             throws XPRSexception
```
Removes all ChgBranch listeners from the object. @deprecated as of Xpress 7.1, please use removeChgBranchListener(XPRSchgBranchListener) or removeChgBranchListeners()

Throws:

XPRSexception

removeChgBranchListeners

public void removeChgBranchListeners()
                              throws XPRSexception

Remove all listeners for the ChgBranch callback

Throws:: XPRSexception

addEstimateListener
```
public void addEstimateListener(XPRSestimateListener listener)
                         throws XPRSexception
```
Add a listener for the Estimate callback. Note that an object can have multiple Estimate listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Estimate listeners will be removed.)

Throws:

XPRSexception

addEstimateListener
```
public void addEstimateListener(XPRSestimateListener listener,
                                java.lang.Object data)
                         throws XPRSexception
```
Add a listener for the Estimate callback. Note that an object can have multiple Estimate listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Estimate listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addEstimateListener
```
public void addEstimateListener(XPRSestimateListener listener,
                                int priority)
                         throws XPRSexception
```
Add a listener for the Estimate callback. Note that an object can have multiple Estimate listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Estimate listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addEstimateListener
```
public void addEstimateListener(XPRSestimateListener listener,
                                java.lang.Object data,
                                int priority)
                         throws XPRSexception
```
Add a listener for the Estimate callback. Note that an object can have multiple Estimate listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Estimate listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeEstimateListener

public void removeEstimateListener(XPRSestimateListener listener)
                            throws XPRSexception

Removes the given Estimate listener from the object.

Throws:: XPRSexception

removeEstimateListener

public void removeEstimateListener(XPRSestimateListener listener,
                                   java.lang.Object data)
                            throws XPRSexception

Removes the given Estimate listener with the given data value from the object.

Throws:: XPRSexception

removeEstimateListener
```
public void removeEstimateListener()
                            throws XPRSexception
```
Removes all Estimate listeners from the object. @deprecated as of Xpress 7.1, please use removeEstimateListener(XPRSestimateListener) or removeEstimateListeners()

Throws:

XPRSexception

removeEstimateListeners

public void removeEstimateListeners()
                             throws XPRSexception

Remove all listeners for the Estimate callback

Throws:: XPRSexception

addSepNodeListener
```
public void addSepNodeListener(XPRSsepNodeListener listener)
                        throws XPRSexception
```
Add a listener for the SepNode callback. Note that an object can have multiple SepNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all SepNode listeners will be removed.)

Throws:

XPRSexception

addSepNodeListener
```
public void addSepNodeListener(XPRSsepNodeListener listener,
                               java.lang.Object data)
                        throws XPRSexception
```
Add a listener for the SepNode callback. Note that an object can have multiple SepNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all SepNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addSepNodeListener
```
public void addSepNodeListener(XPRSsepNodeListener listener,
                               int priority)
                        throws XPRSexception
```
Add a listener for the SepNode callback. Note that an object can have multiple SepNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all SepNode listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addSepNodeListener
```
public void addSepNodeListener(XPRSsepNodeListener listener,
                               java.lang.Object data,
                               int priority)
                        throws XPRSexception
```
Add a listener for the SepNode callback. Note that an object can have multiple SepNode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all SepNode listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeSepNodeListener

public void removeSepNodeListener(XPRSsepNodeListener listener)
                           throws XPRSexception

Removes the given SepNode listener from the object.

Throws:: XPRSexception

removeSepNodeListener

public void removeSepNodeListener(XPRSsepNodeListener listener,
                                  java.lang.Object data)
                           throws XPRSexception

Removes the given SepNode listener with the given data value from the object.

Throws:: XPRSexception

removeSepNodeListener
```
public void removeSepNodeListener()
                           throws XPRSexception
```
Removes all SepNode listeners from the object. @deprecated as of Xpress 7.1, please use removeSepNodeListener(XPRSsepNodeListener) or removeSepNodeListeners()

Throws:

XPRSexception

removeSepNodeListeners

public void removeSepNodeListeners()
                            throws XPRSexception

Remove all listeners for the SepNode callback

Throws:: XPRSexception

addMessageListener
```
public void addMessageListener(XPRSmessageListener listener)
                        throws XPRSexception
```
Add a listener for the Message callback. Note that an object can have multiple Message listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Message listeners will be removed.)

Throws:

XPRSexception

addMessageListener
```
public void addMessageListener(XPRSmessageListener listener,
                               java.lang.Object data)
                        throws XPRSexception
```
Add a listener for the Message callback. Note that an object can have multiple Message listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Message listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addMessageListener
```
public void addMessageListener(XPRSmessageListener listener,
                               int priority)
                        throws XPRSexception
```
Add a listener for the Message callback. Note that an object can have multiple Message listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Message listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addMessageListener
```
public void addMessageListener(XPRSmessageListener listener,
                               java.lang.Object data,
                               int priority)
                        throws XPRSexception
```
Add a listener for the Message callback. Note that an object can have multiple Message listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Message listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeMessageListener

public void removeMessageListener(XPRSmessageListener listener)
                           throws XPRSexception

Removes the given Message listener from the object.

Throws:: XPRSexception

removeMessageListener

public void removeMessageListener(XPRSmessageListener listener,
                                  java.lang.Object data)
                           throws XPRSexception

Removes the given Message listener with the given data value from the object.

Throws:: XPRSexception

removeMessageListener
```
public void removeMessageListener()
                           throws XPRSexception
```
Removes all Message listeners from the object. @deprecated as of Xpress 7.1, please use removeMessageListener(XPRSmessageListener) or removeMessageListeners()

Throws:

XPRSexception

removeMessageListeners

public void removeMessageListeners()
                            throws XPRSexception

Remove all listeners for the Message callback

Throws:: XPRSexception

addMipThreadListener
```
public void addMipThreadListener(XPRSmipThreadListener listener)
                          throws XPRSexception
```
Add a listener for the MipThread callback. Note that an object can have multiple MipThread listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MipThread listeners will be removed.)

Throws:

XPRSexception

addMipThreadListener
```
public void addMipThreadListener(XPRSmipThreadListener listener,
                                 java.lang.Object data)
                          throws XPRSexception
```
Add a listener for the MipThread callback. Note that an object can have multiple MipThread listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MipThread listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addMipThreadListener
```
public void addMipThreadListener(XPRSmipThreadListener listener,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the MipThread callback. Note that an object can have multiple MipThread listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MipThread listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addMipThreadListener
```
public void addMipThreadListener(XPRSmipThreadListener listener,
                                 java.lang.Object data,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the MipThread callback. Note that an object can have multiple MipThread listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MipThread listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeMipThreadListener

public void removeMipThreadListener(XPRSmipThreadListener listener)
                             throws XPRSexception

Removes the given MipThread listener from the object.

Throws:: XPRSexception

removeMipThreadListener

public void removeMipThreadListener(XPRSmipThreadListener listener,
                                    java.lang.Object data)
                             throws XPRSexception

Removes the given MipThread listener with the given data value from the object.

Throws:: XPRSexception

removeMipThreadListener
```
public void removeMipThreadListener()
                             throws XPRSexception
```
Removes all MipThread listeners from the object. @deprecated as of Xpress 7.1, please use removeMipThreadListener(XPRSmipThreadListener) or removeMipThreadListeners()

Throws:

XPRSexception

removeMipThreadListeners

public void removeMipThreadListeners()
                              throws XPRSexception

Remove all listeners for the MipThread callback

Throws:: XPRSexception

addDestroyMTListener
```
public void addDestroyMTListener(XPRSdestroyMTListener listener)
                          throws XPRSexception
```
Add a listener for the DestroyMT callback. Note that an object can have multiple DestroyMT listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all DestroyMT listeners will be removed.)

Throws:

XPRSexception

addDestroyMTListener
```
public void addDestroyMTListener(XPRSdestroyMTListener listener,
                                 java.lang.Object data)
                          throws XPRSexception
```
Add a listener for the DestroyMT callback. Note that an object can have multiple DestroyMT listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all DestroyMT listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addDestroyMTListener
```
public void addDestroyMTListener(XPRSdestroyMTListener listener,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the DestroyMT callback. Note that an object can have multiple DestroyMT listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all DestroyMT listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addDestroyMTListener
```
public void addDestroyMTListener(XPRSdestroyMTListener listener,
                                 java.lang.Object data,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the DestroyMT callback. Note that an object can have multiple DestroyMT listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all DestroyMT listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeDestroyMTListener

public void removeDestroyMTListener(XPRSdestroyMTListener listener)
                             throws XPRSexception

Removes the given DestroyMT listener from the object.

Throws:: XPRSexception

removeDestroyMTListener

public void removeDestroyMTListener(XPRSdestroyMTListener listener,
                                    java.lang.Object data)
                             throws XPRSexception

Removes the given DestroyMT listener with the given data value from the object.

Throws:: XPRSexception

removeDestroyMTListener
```
public void removeDestroyMTListener()
                             throws XPRSexception
```
Removes all DestroyMT listeners from the object. @deprecated as of Xpress 7.1, please use removeDestroyMTListener(XPRSdestroyMTListener) or removeDestroyMTListeners()

Throws:

XPRSexception

removeDestroyMTListeners

public void removeDestroyMTListeners()
                              throws XPRSexception

Remove all listeners for the DestroyMT callback

Throws:: XPRSexception

addNewnodeListener
```
public void addNewnodeListener(XPRSnewnodeListener listener)
                        throws XPRSexception
```
Add a listener for the Newnode callback. Note that an object can have multiple Newnode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Newnode listeners will be removed.)

Throws:

XPRSexception

addNewnodeListener
```
public void addNewnodeListener(XPRSnewnodeListener listener,
                               java.lang.Object data)
                        throws XPRSexception
```
Add a listener for the Newnode callback. Note that an object can have multiple Newnode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Newnode listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addNewnodeListener
```
public void addNewnodeListener(XPRSnewnodeListener listener,
                               int priority)
                        throws XPRSexception
```
Add a listener for the Newnode callback. Note that an object can have multiple Newnode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Newnode listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addNewnodeListener
```
public void addNewnodeListener(XPRSnewnodeListener listener,
                               java.lang.Object data,
                               int priority)
                        throws XPRSexception
```
Add a listener for the Newnode callback. Note that an object can have multiple Newnode listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Newnode listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeNewnodeListener

public void removeNewnodeListener(XPRSnewnodeListener listener)
                           throws XPRSexception

Removes the given Newnode listener from the object.

Throws:: XPRSexception

removeNewnodeListener

public void removeNewnodeListener(XPRSnewnodeListener listener,
                                  java.lang.Object data)
                           throws XPRSexception

Removes the given Newnode listener with the given data value from the object.

Throws:: XPRSexception

removeNewnodeListener
```
public void removeNewnodeListener()
                           throws XPRSexception
```
Removes all Newnode listeners from the object. @deprecated as of Xpress 7.1, please use removeNewnodeListener(XPRSnewnodeListener) or removeNewnodeListeners()

Throws:

XPRSexception

removeNewnodeListeners

public void removeNewnodeListeners()
                            throws XPRSexception

Remove all listeners for the Newnode callback

Throws:: XPRSexception

addBarIterationListener
```
public void addBarIterationListener(XPRSbarIterationListener listener)
                             throws XPRSexception
```
Add a listener for the BarIteration callback. Note that an object can have multiple BarIteration listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarIteration listeners will be removed.)

Throws:

XPRSexception

addBarIterationListener
```
public void addBarIterationListener(XPRSbarIterationListener listener,
                                    java.lang.Object data)
                             throws XPRSexception
```
Add a listener for the BarIteration callback. Note that an object can have multiple BarIteration listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarIteration listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addBarIterationListener
```
public void addBarIterationListener(XPRSbarIterationListener listener,
                                    int priority)
                             throws XPRSexception
```
Add a listener for the BarIteration callback. Note that an object can have multiple BarIteration listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarIteration listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addBarIterationListener
```
public void addBarIterationListener(XPRSbarIterationListener listener,
                                    java.lang.Object data,
                                    int priority)
                             throws XPRSexception
```
Add a listener for the BarIteration callback. Note that an object can have multiple BarIteration listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BarIteration listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeBarIterationListener

public void removeBarIterationListener(XPRSbarIterationListener listener)
                                throws XPRSexception

Removes the given BarIteration listener from the object.

Throws:: XPRSexception

removeBarIterationListener

public void removeBarIterationListener(XPRSbarIterationListener listener,
                                       java.lang.Object data)
                                throws XPRSexception

Removes the given BarIteration listener with the given data value from the object.

Throws:: XPRSexception

removeBarIterationListener
```
public void removeBarIterationListener()
                                throws XPRSexception
```
Removes all BarIteration listeners from the object. @deprecated as of Xpress 7.1, please use removeBarIterationListener(XPRSbarIterationListener) or removeBarIterationListeners()

Throws:

XPRSexception

removeBarIterationListeners

public void removeBarIterationListeners()
                                 throws XPRSexception

Remove all listeners for the BarIteration callback

Throws:: XPRSexception

addPresolveListener
```
public void addPresolveListener(XPRSpresolveListener listener)
                         throws XPRSexception
```
Add a listener for the Presolve callback. Note that an object can have multiple Presolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Presolve listeners will be removed.)

Throws:

XPRSexception

addPresolveListener
```
public void addPresolveListener(XPRSpresolveListener listener,
                                java.lang.Object data)
                         throws XPRSexception
```
Add a listener for the Presolve callback. Note that an object can have multiple Presolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Presolve listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addPresolveListener
```
public void addPresolveListener(XPRSpresolveListener listener,
                                int priority)
                         throws XPRSexception
```
Add a listener for the Presolve callback. Note that an object can have multiple Presolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Presolve listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addPresolveListener
```
public void addPresolveListener(XPRSpresolveListener listener,
                                java.lang.Object data,
                                int priority)
                         throws XPRSexception
```
Add a listener for the Presolve callback. Note that an object can have multiple Presolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all Presolve listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removePresolveListener

public void removePresolveListener(XPRSpresolveListener listener)
                            throws XPRSexception

Removes the given Presolve listener from the object.

Throws:: XPRSexception

removePresolveListener

public void removePresolveListener(XPRSpresolveListener listener,
                                   java.lang.Object data)
                            throws XPRSexception

Removes the given Presolve listener with the given data value from the object.

Throws:: XPRSexception

removePresolveListener
```
public void removePresolveListener()
                            throws XPRSexception
```
Removes all Presolve listeners from the object. @deprecated as of Xpress 7.1, please use removePresolveListener(XPRSpresolveListener) or removePresolveListeners()

Throws:

XPRSexception

removePresolveListeners

public void removePresolveListeners()
                             throws XPRSexception

Remove all listeners for the Presolve callback

Throws:: XPRSexception

addChangeBranchObjectListener
```
public void addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener)
                                   throws XPRSexception
```
Add a listener for the ChangeBranchObject callback. Note that an object can have multiple ChangeBranchObject listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChangeBranchObject listeners will be removed.)

Throws:

XPRSexception

addChangeBranchObjectListener
```
public void addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener,
                                          java.lang.Object data)
                                   throws XPRSexception
```
Add a listener for the ChangeBranchObject callback. Note that an object can have multiple ChangeBranchObject listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChangeBranchObject listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addChangeBranchObjectListener
```
public void addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener,
                                          int priority)
                                   throws XPRSexception
```
Add a listener for the ChangeBranchObject callback. Note that an object can have multiple ChangeBranchObject listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChangeBranchObject listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addChangeBranchObjectListener
```
public void addChangeBranchObjectListener(XPRSchangeBranchObjectListener listener,
                                          java.lang.Object data,
                                          int priority)
                                   throws XPRSexception
```
Add a listener for the ChangeBranchObject callback. Note that an object can have multiple ChangeBranchObject listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ChangeBranchObject listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeChangeBranchObjectListener

public void removeChangeBranchObjectListener(XPRSchangeBranchObjectListener listener)
                                      throws XPRSexception

Removes the given ChangeBranchObject listener from the object.

Throws:: XPRSexception

removeChangeBranchObjectListener

public void removeChangeBranchObjectListener(XPRSchangeBranchObjectListener listener,
                                             java.lang.Object data)
                                      throws XPRSexception

Removes the given ChangeBranchObject listener with the given data value from the object.

Throws:: XPRSexception

removeChangeBranchObjectListener
```
public void removeChangeBranchObjectListener()
                                      throws XPRSexception
```
Removes all ChangeBranchObject listeners from the object. @deprecated as of Xpress 7.1, please use removeChangeBranchObjectListener(XPRSchangeBranchObjectListener) or removeChangeBranchObjectListeners()

Throws:

XPRSexception

removeChangeBranchObjectListeners

public void removeChangeBranchObjectListeners()
                                       throws XPRSexception

Remove all listeners for the ChangeBranchObject callback

Throws:: XPRSexception

addComputeRestartListener
```
public void addComputeRestartListener(XPRScomputeRestartListener listener)
                               throws XPRSexception
```
Add a listener for the ComputeRestart callback. Note that an object can have multiple ComputeRestart listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ComputeRestart listeners will be removed.)

Throws:

XPRSexception

addComputeRestartListener
```
public void addComputeRestartListener(XPRScomputeRestartListener listener,
                                      java.lang.Object data)
                               throws XPRSexception
```
Add a listener for the ComputeRestart callback. Note that an object can have multiple ComputeRestart listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ComputeRestart listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addComputeRestartListener
```
public void addComputeRestartListener(XPRScomputeRestartListener listener,
                                      int priority)
                               throws XPRSexception
```
Add a listener for the ComputeRestart callback. Note that an object can have multiple ComputeRestart listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ComputeRestart listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addComputeRestartListener
```
public void addComputeRestartListener(XPRScomputeRestartListener listener,
                                      java.lang.Object data,
                                      int priority)
                               throws XPRSexception
```
Add a listener for the ComputeRestart callback. Note that an object can have multiple ComputeRestart listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all ComputeRestart listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeComputeRestartListener

public void removeComputeRestartListener(XPRScomputeRestartListener listener)
                                  throws XPRSexception

Removes the given ComputeRestart listener from the object.

Throws:: XPRSexception

removeComputeRestartListener

public void removeComputeRestartListener(XPRScomputeRestartListener listener,
                                         java.lang.Object data)
                                  throws XPRSexception

Removes the given ComputeRestart listener with the given data value from the object.

Throws:: XPRSexception

removeComputeRestartListener
```
public void removeComputeRestartListener()
                                  throws XPRSexception
```
Removes all ComputeRestart listeners from the object. @deprecated as of Xpress 7.1, please use removeComputeRestartListener(XPRScomputeRestartListener) or removeComputeRestartListeners()

Throws:

XPRSexception

removeComputeRestartListeners

public void removeComputeRestartListeners()
                                   throws XPRSexception

Remove all listeners for the ComputeRestart callback

Throws:: XPRSexception

addGapNotifyListener
```
public void addGapNotifyListener(XPRSgapNotifyListener listener)
                          throws XPRSexception
```
Add a listener for the GapNotify callback. Note that an object can have multiple GapNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GapNotify listeners will be removed.)

Throws:

XPRSexception

addGapNotifyListener
```
public void addGapNotifyListener(XPRSgapNotifyListener listener,
                                 java.lang.Object data)
                          throws XPRSexception
```
Add a listener for the GapNotify callback. Note that an object can have multiple GapNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GapNotify listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addGapNotifyListener
```
public void addGapNotifyListener(XPRSgapNotifyListener listener,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the GapNotify callback. Note that an object can have multiple GapNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GapNotify listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addGapNotifyListener
```
public void addGapNotifyListener(XPRSgapNotifyListener listener,
                                 java.lang.Object data,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the GapNotify callback. Note that an object can have multiple GapNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all GapNotify listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeGapNotifyListener

public void removeGapNotifyListener(XPRSgapNotifyListener listener)
                             throws XPRSexception

Removes the given GapNotify listener from the object.

Throws:: XPRSexception

removeGapNotifyListener

public void removeGapNotifyListener(XPRSgapNotifyListener listener,
                                    java.lang.Object data)
                             throws XPRSexception

Removes the given GapNotify listener with the given data value from the object.

Throws:: XPRSexception

removeGapNotifyListener
```
public void removeGapNotifyListener()
                             throws XPRSexception
```
Removes all GapNotify listeners from the object. @deprecated as of Xpress 7.1, please use removeGapNotifyListener(XPRSgapNotifyListener) or removeGapNotifyListeners()

Throws:

XPRSexception

removeGapNotifyListeners

public void removeGapNotifyListeners()
                              throws XPRSexception

Remove all listeners for the GapNotify callback

Throws:: XPRSexception

addUserSolNotifyListener
```
public void addUserSolNotifyListener(XPRSuserSolNotifyListener listener)
                              throws XPRSexception
```
Add a listener for the UserSolNotify callback. Note that an object can have multiple UserSolNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all UserSolNotify listeners will be removed.)

Throws:

XPRSexception

addUserSolNotifyListener
```
public void addUserSolNotifyListener(XPRSuserSolNotifyListener listener,
                                     java.lang.Object data)
                              throws XPRSexception
```
Add a listener for the UserSolNotify callback. Note that an object can have multiple UserSolNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all UserSolNotify listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addUserSolNotifyListener
```
public void addUserSolNotifyListener(XPRSuserSolNotifyListener listener,
                                     int priority)
                              throws XPRSexception
```
Add a listener for the UserSolNotify callback. Note that an object can have multiple UserSolNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all UserSolNotify listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addUserSolNotifyListener
```
public void addUserSolNotifyListener(XPRSuserSolNotifyListener listener,
                                     java.lang.Object data,
                                     int priority)
                              throws XPRSexception
```
Add a listener for the UserSolNotify callback. Note that an object can have multiple UserSolNotify listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all UserSolNotify listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeUserSolNotifyListener

public void removeUserSolNotifyListener(XPRSuserSolNotifyListener listener)
                                 throws XPRSexception

Removes the given UserSolNotify listener from the object.

Throws:: XPRSexception

removeUserSolNotifyListener

public void removeUserSolNotifyListener(XPRSuserSolNotifyListener listener,
                                        java.lang.Object data)
                                 throws XPRSexception

Removes the given UserSolNotify listener with the given data value from the object.

Throws:: XPRSexception

removeUserSolNotifyListener
```
public void removeUserSolNotifyListener()
                                 throws XPRSexception
```
Removes all UserSolNotify listeners from the object. @deprecated as of Xpress 7.1, please use removeUserSolNotifyListener(XPRSuserSolNotifyListener) or removeUserSolNotifyListeners()

Throws:

XPRSexception

removeUserSolNotifyListeners

public void removeUserSolNotifyListeners()
                                  throws XPRSexception

Remove all listeners for the UserSolNotify callback

Throws:: XPRSexception

addBeforeSolveListener
```
public void addBeforeSolveListener(XPRSbeforeSolveListener listener)
                            throws XPRSexception
```
Add a listener for the BeforeSolve callback. Note that an object can have multiple BeforeSolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BeforeSolve listeners will be removed.)

Throws:

XPRSexception

addBeforeSolveListener
```
public void addBeforeSolveListener(XPRSbeforeSolveListener listener,
                                   java.lang.Object data)
                            throws XPRSexception
```
Add a listener for the BeforeSolve callback. Note that an object can have multiple BeforeSolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BeforeSolve listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addBeforeSolveListener
```
public void addBeforeSolveListener(XPRSbeforeSolveListener listener,
                                   int priority)
                            throws XPRSexception
```
Add a listener for the BeforeSolve callback. Note that an object can have multiple BeforeSolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BeforeSolve listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addBeforeSolveListener
```
public void addBeforeSolveListener(XPRSbeforeSolveListener listener,
                                   java.lang.Object data,
                                   int priority)
                            throws XPRSexception
```
Add a listener for the BeforeSolve callback. Note that an object can have multiple BeforeSolve listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all BeforeSolve listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeBeforeSolveListener

public void removeBeforeSolveListener(XPRSbeforeSolveListener listener)
                               throws XPRSexception

Removes the given BeforeSolve listener from the object.

Throws:: XPRSexception

removeBeforeSolveListener

public void removeBeforeSolveListener(XPRSbeforeSolveListener listener,
                                      java.lang.Object data)
                               throws XPRSexception

Removes the given BeforeSolve listener with the given data value from the object.

Throws:: XPRSexception

removeBeforeSolveListener
```
public void removeBeforeSolveListener()
                               throws XPRSexception
```
Removes all BeforeSolve listeners from the object. @deprecated as of Xpress 7.1, please use removeBeforeSolveListener(XPRSbeforeSolveListener) or removeBeforeSolveListeners()

Throws:

XPRSexception

removeBeforeSolveListeners

public void removeBeforeSolveListeners()
                                throws XPRSexception

Remove all listeners for the BeforeSolve callback

Throws:: XPRSexception

addCheckTimeListener
```
public void addCheckTimeListener(XPRScheckTimeListener listener)
                          throws XPRSexception
```
Add a listener for the CheckTime callback. Note that an object can have multiple CheckTime listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CheckTime listeners will be removed.)

Throws:

XPRSexception

addCheckTimeListener
```
public void addCheckTimeListener(XPRScheckTimeListener listener,
                                 java.lang.Object data)
                          throws XPRSexception
```
Add a listener for the CheckTime callback. Note that an object can have multiple CheckTime listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CheckTime listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addCheckTimeListener
```
public void addCheckTimeListener(XPRScheckTimeListener listener,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the CheckTime callback. Note that an object can have multiple CheckTime listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CheckTime listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addCheckTimeListener
```
public void addCheckTimeListener(XPRScheckTimeListener listener,
                                 java.lang.Object data,
                                 int priority)
                          throws XPRSexception
```
Add a listener for the CheckTime callback. Note that an object can have multiple CheckTime listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all CheckTime listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeCheckTimeListener

public void removeCheckTimeListener(XPRScheckTimeListener listener)
                             throws XPRSexception

Removes the given CheckTime listener from the object.

Throws:: XPRSexception

removeCheckTimeListener

public void removeCheckTimeListener(XPRScheckTimeListener listener,
                                    java.lang.Object data)
                             throws XPRSexception

Removes the given CheckTime listener with the given data value from the object.

Throws:: XPRSexception

removeCheckTimeListener
```
public void removeCheckTimeListener()
                             throws XPRSexception
```
Removes all CheckTime listeners from the object. @deprecated as of Xpress 7.1, please use removeCheckTimeListener(XPRScheckTimeListener) or removeCheckTimeListeners()

Throws:

XPRSexception

removeCheckTimeListeners

public void removeCheckTimeListeners()
                              throws XPRSexception

Remove all listeners for the CheckTime callback

Throws:: XPRSexception

addMsgHandlerListener
```
public void addMsgHandlerListener(XPRSmsgHandlerListener listener)
                           throws XPRSexception
```
Add a listener for the MsgHandler callback. Note that an object can have multiple MsgHandler listeners.

Specified by:

addMsgHandlerListener in class XPRSobject

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MsgHandler listeners will be removed.)

Throws:

XPRSexception

addMsgHandlerListener
```
public void addMsgHandlerListener(XPRSmsgHandlerListener listener,
                                  java.lang.Object data)
                           throws XPRSexception
```
Add a listener for the MsgHandler callback. Note that an object can have multiple MsgHandler listeners.

Specified by:

addMsgHandlerListener in class XPRSobject

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MsgHandler listeners will be removed.)

data - An additional object which will be passed down to the callback function

Throws:

XPRSexception

addMsgHandlerListener
```
public void addMsgHandlerListener(XPRSmsgHandlerListener listener,
                                  int priority)
                           throws XPRSexception
```
Add a listener for the MsgHandler callback. Note that an object can have multiple MsgHandler listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MsgHandler listeners will be removed.)

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

addMsgHandlerListener
```
public void addMsgHandlerListener(XPRSmsgHandlerListener listener,
                                  java.lang.Object data,
                                  int priority)
                           throws XPRSexception
```
Add a listener for the MsgHandler callback. Note that an object can have multiple MsgHandler listeners.

Parameters:

listener - The listener to which the event will be dispatched. (If null, all MsgHandler listeners will be removed.)

data - An additional object which will be passed down to the callback function

priority - Listeners with higher priorities are called first

Throws:

XPRSexception

removeMsgHandlerListener

public void removeMsgHandlerListener(XPRSmsgHandlerListener listener)
                              throws XPRSexception

Removes the given MsgHandler listener from the object.

Throws:: XPRSexception

removeMsgHandlerListener

public void removeMsgHandlerListener(XPRSmsgHandlerListener listener,
                                     java.lang.Object data)
                              throws XPRSexception

Removes the given MsgHandler listener with the given data value from the object.

Throws:: XPRSexception

removeMsgHandlerListener
```
public void removeMsgHandlerListener()
                              throws XPRSexception
```
Removes all MsgHandler listeners from the object. @deprecated as of Xpress 7.1, please use removeMsgHandlerListener(XPRSmsgHandlerListener) or removeMsgHandlerListeners()

Specified by:

removeMsgHandlerListener in class XPRSobject

Throws:

XPRSexception

removeMsgHandlerListeners

public void removeMsgHandlerListeners()
                               throws XPRSexception

Remove all listeners for the MsgHandler callback

Throws:: XPRSexception

attributes
```
public XPRSprob.Attributes attributes()
```
Access the attributes of this instance.

Returns:

an object that allows accessing the attributes of this instance.

controls
```
public XPRSprob.Controls controls()
```
Access the controls of this instance.

Returns:

an object that allows accessing the controls of this instance.

getSolX
```
public double[] getSolX()
                 throws XPRSprobException
```
Get the x values of a solution. This is a convenience wrapper for getSol(double[], double[], double[], double[]) that allocates and returns only the x array.

Throws:

XPRSprobException

See Also:

getSol(double[], double[], double[], double[])

getSolSlack
```
public double[] getSolSlack()
                     throws XPRSprobException
```
Get the slack values of a solution. This is a convenience wrapper for getSol(double[], double[], double[], double[]) that allocates and returns only the slack array.

Throws:

XPRSprobException

See Also:

getSol(double[], double[], double[], double[])

getSolDuals
```
public double[] getSolDuals()
                     throws XPRSprobException
```
Get the duals values of a solution. This is a convenience wrapper for getSol(double[], double[], double[], double[]) that allocates and returns only the duals array.

Throws:

XPRSprobException

See Also:

getSol(double[], double[], double[], double[])

getSolDjs
```
public double[] getSolDjs()
                   throws XPRSprobException
```
Get the djs values of a solution. This is a convenience wrapper for getSol(double[], double[], double[], double[]) that allocates and returns only the djs array.

Throws:

XPRSprobException

See Also:

getSol(double[], double[], double[], double[])

getSol
```
public XPRSprob.Solution getSol()
                         throws XPRSprobException
```
Get a solution. This is a convenience wrapper for getSol(double[], double[], double[], double[]) that allocates and returns all arrays in a single object. * @see #getSol(double[], double[], double[], double[])

Throws:

XPRSprobException

getPresolveSolX
```
public double[] getPresolveSolX()
                         throws XPRSprobException
```
Get the x values of a solution. This is a convenience wrapper for getPresolveSol(double[], double[], double[], double[]) that allocates and returns only the x array.

Throws:

XPRSprobException

See Also:

getPresolveSol(double[], double[], double[], double[])

getPresolveSolSlack
```
public double[] getPresolveSolSlack()
                             throws XPRSprobException
```
Get the slack values of a solution. This is a convenience wrapper for getPresolveSol(double[], double[], double[], double[]) that allocates and returns only the slack array.

Throws:

XPRSprobException

See Also:

getPresolveSol(double[], double[], double[], double[])

getPresolveSolDuals
```
public double[] getPresolveSolDuals()
                             throws XPRSprobException
```
Get the duals values of a solution. This is a convenience wrapper for getPresolveSol(double[], double[], double[], double[]) that allocates and returns only the duals array.

Throws:

XPRSprobException

See Also:

getPresolveSol(double[], double[], double[], double[])

getPresolveSolDjs
```
public double[] getPresolveSolDjs()
                           throws XPRSprobException
```
Get the djs values of a solution. This is a convenience wrapper for getPresolveSol(double[], double[], double[], double[]) that allocates and returns only the djs array.

Throws:

XPRSprobException

See Also:

getPresolveSol(double[], double[], double[], double[])

getPresolveSol
```
public XPRSprob.Solution getPresolveSol()
                                 throws XPRSprobException
```
Get a solution. This is a convenience wrapper for getPresolveSol(double[], double[], double[], double[]) that allocates and returns all arrays in a single object. * @see #getPresolveSol(double[], double[], double[], double[])

Throws:

XPRSprobException

getLpSolX
```
public double[] getLpSolX()
                   throws XPRSprobException
```
Get the x values of a solution. This is a convenience wrapper for getLpSol(double[], double[], double[], double[]) that allocates and returns only the x array.

Throws:

XPRSprobException

See Also:

getLpSol(double[], double[], double[], double[])

getLpSolSlack
```
public double[] getLpSolSlack()
                       throws XPRSprobException
```
Get the slack values of a solution. This is a convenience wrapper for getLpSol(double[], double[], double[], double[]) that allocates and returns only the slack array.

Throws:

XPRSprobException

See Also:

getLpSol(double[], double[], double[], double[])

getLpSolDuals
```
public double[] getLpSolDuals()
                       throws XPRSprobException
```
Get the duals values of a solution. This is a convenience wrapper for getLpSol(double[], double[], double[], double[]) that allocates and returns only the duals array.

Throws:

XPRSprobException

See Also:

getLpSol(double[], double[], double[], double[])

getLpSolDjs
```
public double[] getLpSolDjs()
                     throws XPRSprobException
```
Get the djs values of a solution. This is a convenience wrapper for getLpSol(double[], double[], double[], double[]) that allocates and returns only the djs array.

Throws:

XPRSprobException

See Also:

getLpSol(double[], double[], double[], double[])

getLpSol
```
public XPRSprob.Solution getLpSol()
                           throws XPRSprobException
```
Get a solution. This is a convenience wrapper for getLpSol(double[], double[], double[], double[]) that allocates and returns all arrays in a single object. * @see #getLpSol(double[], double[], double[], double[])

Throws:

XPRSprobException

getMipSolX
```
public double[] getMipSolX()
                    throws XPRSprobException
```
Get the x values of a solution. This is a convenience wrapper for getMipSol(double[], double[]) that allocates and returns only the x array.

Throws:

XPRSprobException

See Also:

getMipSol(double[], double[])

getMipSolSlack
```
public double[] getMipSolSlack()
                        throws XPRSprobException
```
Get the slack values of a solution. This is a convenience wrapper for getMipSol(double[], double[]) that allocates and returns only the slack array.

Throws:

XPRSprobException

See Also:

getMipSol(double[], double[])

getMipSol
```
public XPRSprob.Solution getMipSol()
                            throws XPRSprobException
```
Get a solution. This is a convenience wrapper for getMipSol(double[], double[]) that allocates and returns all arrays in a single object. * @see #getMipSol(double[], double[])

Throws:

XPRSprobException

getLastBarSolX
```
public double[] getLastBarSolX()
                        throws XPRSprobException
```
Get the x values of a solution. This is a convenience wrapper for getLastBarSol(double[], double[], double[], double[], IntHolder) that allocates and returns only the x array.

Throws:

XPRSprobException

See Also:

getLastBarSol(double[], double[], double[], double[], IntHolder)

getLastBarSolSlack
```
public double[] getLastBarSolSlack()
                            throws XPRSprobException
```
Get the slack values of a solution. This is a convenience wrapper for getLastBarSol(double[], double[], double[], double[], IntHolder) that allocates and returns only the slack array.

Throws:

XPRSprobException

See Also:

getLastBarSol(double[], double[], double[], double[], IntHolder)

getLastBarSolDuals
```
public double[] getLastBarSolDuals()
                            throws XPRSprobException
```
Get the duals values of a solution. This is a convenience wrapper for getLastBarSol(double[], double[], double[], double[], IntHolder) that allocates and returns only the duals array.

Throws:

XPRSprobException

See Also:

getLastBarSol(double[], double[], double[], double[], IntHolder)

getLastBarSolDjs
```
public double[] getLastBarSolDjs()
                          throws XPRSprobException
```
Get the djs values of a solution. This is a convenience wrapper for getLastBarSol(double[], double[], double[], double[], IntHolder) that allocates and returns only the djs array.

Throws:

XPRSprobException

See Also:

getLastBarSol(double[], double[], double[], double[], IntHolder)

getLastBarSol
```
public XPRSprob.StatusSolution getLastBarSol()
                                      throws XPRSprobException
```
Get a solution. This is a convenience wrapper for getLastBarSol(double[], double[], double[], double[], IntHolder) that allocates and returns all arrays in a single object. * @see #getLastBarSol(double[], double[], double[], double[], IntHolder)

Throws:

XPRSprobException

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Contents

Index

Glossary

Search Results

XPRSprob

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class com.dashoptimization.XPRSobject

Methods inherited from class java.lang.Object

Constructor Detail

XPRSprob

Method Detail

close

setBranchCuts

setBranchCuts

delCPCuts

delCuts

getCPCutList

getCPCuts

getCutList

loadCuts

storeCuts

interrupt

iISStatus

iISAll

iISIsolations

getNames

getNames

getRowNames

getColumnNames

getSetNames

getPWLNames

getGenConsNames

getNameListObject

getStrControl

getStrAttrib

getStrControl

getStrAttrib

addNames

addSetNames

chgMCoef

chgMQObj

chgObjSense

createBranchObject

createBranchObjectFromGlobal

getPwlCons

getGenCons

getInfeas

getScaledInfeas

crossoverLpSol

getLastBarSol

IISStatus

getIISData

getiis

getGlobal

getGlobalEntities

getGlobalSets

loadLPSol

repairWeightedInfeas

repairWeightedInfeasBounds

repairInfeas

basisStability

getControlInfo

getAttribInfo

getCols

getRows

getMQObj

getPrimalRay

getDualRay

getBasisVal

getRowBasisVal

getColBasisVal

getCutList

calcObjective

calcSolInfo

getQRowQMatrixTriplets

getQRowIndices

refineMipSol

getCutSlack