xpress

The namespace that contains all functions, constants, etc of the Xpress Solver. More...

Namespaces
namespace	maps
	Multi-dimensional maps.

namespace	objects
	Creating optimization problems using objects.

Classes
class	Array
	Class for passing arrays to Xpress library functions. More...

class	BranchObject
	Xpress branching object. More...

class	CallbackHandle
	Callback reference. More...

struct	has_begin
	Type trait to check whether `C` supports `begin(C)` in some way. More...

struct	has_begin_function
	Type trait to check whether a type supports begin(type). More...

struct	has_begin_member
	Type trait to check whether a type has a begin() member. More...

struct	has_end
	Type trait to check whether `C` supports `end(C)` in some way. More...

struct	has_end_function
	Type trait to check whether a type supports end(type). More...

struct	has_end_member
	Type trait to check whether a type has an end() member. More...

struct	has_size
	Type trait to check whether T has a member function `size` that returns something compatible with std::size:t. More...

class	has_value_type
	Type trait to check whether T has a member `value_type`. More...

class	IndicatorInfo
	Data describing an indicator constraint. More...

struct	is_collection
	Check whether type `T` is a collection. More...

struct	is_iterable
	Check whether type `T` is iterable. More...

struct	is_stream
	Check whether type `T` is a stream. More...

class	NameList
	Name list object. More...

class	Object
	Base class for all Xpress objects. More...

class	PwlBreakpoint
	A breakpoint in a piecewise linear function. More...

class	SizedArray
	Similar to class `Array` but this class also knows the length of the array. More...

class	VariableBuilder
	Builders for creating arrays or maps of variables. More...

class	XPRS
	Xpress license. More...

class	XPRSException
	Exception that indicates an error in the Xpress library. More...

class	XPRSProblem
	Xpress solver problem. More...

Enumerations
enum class	AllowCompute : int { Always = XPRS_ALLOW_COMPUTE_ALWAYS , Never = XPRS_ALLOW_COMPUTE_NEVER , Default = XPRS_ALLOW_COMPUTE_DEFAULT }
	AllowCompute enumeration. More...

enum class	AlwaysNeverAutomatic : int { Automatic = XPRS_ANA_AUTOMATIC , Never = XPRS_ANA_NEVER , Always = XPRS_ANA_ALWAYS }
	AlwaysNeverAutomatic enumeration. More...

enum class	BacktrackAlg : int { BestEstimate = XPRS_BACKTRACKALG_BEST_ESTIMATE , BestBound = XPRS_BACKTRACKALG_BEST_BOUND , DeepestNode = XPRS_BACKTRACKALG_DEEPEST_NODE , HighestNode = XPRS_BACKTRACKALG_HIGHEST_NODE , EarliestNode = XPRS_BACKTRACKALG_EARLIEST_NODE , LatestNode = XPRS_BACKTRACKALG_LATEST_NODE , Random = XPRS_BACKTRACKALG_RANDOM , MinimumInfeas = XPRS_BACKTRACKALG_MIN_INFEAS , BestEstimateWithMinimumInfeas = XPRS_BACKTRACKALG_BEST_ESTIMATE_MIN_INFEAS , DeepestBestEstimate = XPRS_BACKTRACKALG_DEEPEST_BEST_ESTIMATE }
	BacktrackAlg enumeration. More...

enum class	BARHGOps : int { AsymAvg = XPRS_BARHGOPS_ASYM_AVG , StartL1 = XPRS_BARHGOPS_START_L1 , StartL2 = XPRS_BARHGOPS_START_L2 , StartLInf = XPRS_BARHGOPS_START_LINF , SqrtOmega = XPRS_BARHGOPS_SQRT_OMEGA , OmegaContract = XPRS_BARHGOPS_OMEGA_CONTRACT , OmegaInf = XPRS_BARHGOPS_OMEGA_INF }
	BARHGOps enumeration. More...

enum class	BarOrder : int { Default = XPRS_BAR_DEFAULT , MinDegree = XPRS_BAR_MIN_DEGREE , MinLocalFill = XPRS_BAR_MIN_LOCAL_FILL , NestedDissection = XPRS_BAR_NESTED_DISSECTION }
	BarOrder enumeration. More...

enum class	BarPresolveOps : int { StandardPresolve = XPRS_BARPRESOLVEOPS_STANDARD_PRESOLVE , ExtraBarrierPresolve = XPRS_BARPRESOLVEOPS_EXTRA_BARRIER_PRESOLVE }
	BarPresolveOps enumeration. More...

enum class	BranchChoice : int { MinimumEstimateFirst = XPRS_BRANCH_MIN_EST_FIRST , MaximumEstimateFirst = XPRS_BRANCH_MAX_EST_FIRST }
	BranchChoice enumeration. More...

enum class	CholeskyAlgorithm : int { PullCholesky = XPRS_ALG_PULL_CHOLESKY , PushCholesky = XPRS_ALG_PUSH_CHOLESKY }
	CholeskyAlgorithm enumeration. More...

enum class	Clamping : int { Primal = XPRS_CLAMPING_PRIMAL , Dual = XPRS_CLAMPING_DUAL , Slacks = XPRS_CLAMPING_SLACKS , RDJ = XPRS_CLAMPING_RDJ }
	Clamping enumeration. More...

enum struct	ColumnType : char
	Enumeration for variable/column types. More...

enum class	ComputeLog : int { Never = XPRS_COMPUTELOG_NEVER , RealTime = XPRS_COMPUTELOG_REALTIME , OnCompletion = XPRS_COMPUTELOG_ONCOMPLETION , OnError = XPRS_COMPUTELOG_ONERROR }
	ComputeLog enumeration. More...

enum class	CrossoverDynamicReduction : int { BeforeCrossover = XPRS_XDRPBEFORE_CROSSOVER , InsideCrossover = XPRS_XDRPINSIDE_CROSSOVER , AggressiveBeforeCrossover = XPRS_XDRPAGGRESSIVE_BEFORE_CROSSOVER }
	CrossoverDynamicReduction enumeration. More...

enum class	CutSelect : int { Clique = XPRS_CUTSELECT_CLIQUE , Mir = XPRS_CUTSELECT_MIR , Cover = XPRS_CUTSELECT_COVER , Flowpath = XPRS_CUTSELECT_FLOWPATH , Implication = XPRS_CUTSELECT_IMPLICATION , LiftAndProject = XPRS_CUTSELECT_LIFT_AND_PROJECT , DisableCutRows = XPRS_CUTSELECT_DISABLE_CUT_ROWS , GubCover = XPRS_CUTSELECT_GUB_COVER , Default = XPRS_CUTSELECT_DEFAULT }
	CutSelect enumeration. More...

enum class	CutStrategy : int { Default = XPRS_CUTSTRATEGY_DEFAULT , None = XPRS_CUTSTRATEGY_NONE , Conservative = XPRS_CUTSTRATEGY_CONSERVATIVE , Moderate = XPRS_CUTSTRATEGY_MODERATE , Aggressive = XPRS_CUTSTRATEGY_AGGRESSIVE }
	CutStrategy enumeration. More...

enum class	DefaultAlg : int { Default = XPRS_ALG_DEFAULT , Dual = XPRS_ALG_DUAL , Primal = XPRS_ALG_PRIMAL , Barrier = XPRS_ALG_BARRIER , Network = XPRS_ALG_NETWORK }
	DefaultAlg enumeration. More...

enum class	DualGradient : int { Automatic = XPRS_DUALGRADIENT_AUTOMATIC , Devex = XPRS_DUALGRADIENT_DEVEX , SteepestEdge = XPRS_DUALGRADIENT_STEEPESTEDGE }
	DualGradient enumeration. More...

enum class	DualizeOps : int { SwitchAlgorithm = XPRS_DUALIZEOPS_SWITCHALGORITHM }
	DualizeOps enumeration. More...

enum class	DualStrategy : int { RemoveInfeasibilitiesWithPrimal = XPRS_DUALSTRATEGY_REMOVE_INFEAS_WITH_PRIMAL , RemoveInfeasibilitiesWithDual = XPRS_DUALSTRATEGY_REMOVE_INFEAS_WITH_DUAL }
	DualStrategy enumeration. More...

enum class	FeasibilityPump : int { Automatic = XPRS_FEASIBILITYPUMP_AUTOMATIC , Never = XPRS_FEASIBILITYPUMP_NEVER , Always = XPRS_FEASIBILITYPUMP_ALWAYS , LastResort = XPRS_FEASIBILITYPUMP_LASTRESORT }
	FeasibilityPump enumeration. More...

enum class	GenConsType : int { Max = XPRS_GENCONS_MAX , Min = XPRS_GENCONS_MIN , And = XPRS_GENCONS_AND , Or = XPRS_GENCONS_OR , Abs = XPRS_GENCONS_ABS }
	GenConsType enumeration. More...

enum class	Globalboundingbox : int { NotApplied = XPRS_GLOBALBOUNDINGBOX_NOT_APPLIED , Original = XPRS_GLOBALBOUNDINGBOX_ORIGINAL , Auxiliary = XPRS_GLOBALBOUNDINGBOX_AUXILIARY }
	Globalboundingbox enumeration. More...

enum class	GlobalLSHEURStrategy : int { Default = XPRS_GLOBALLSHEURSTRATEGY_DEFAULT , None = XPRS_GLOBALLSHEURSTRATEGY_NONE , Conservative = XPRS_GLOBALLSHEURSTRATEGY_CONSERVATIVE , Moderate = XPRS_GLOBALLSHEURSTRATEGY_MODERATE , Aggressive = XPRS_GLOBALLSHEURSTRATEGY_AGGRESSIVE }
	GlobalLSHEURStrategy enumeration. More...

enum class	HeuristicSearchSelect : int { LocalSearchLargeNeighbourhood = XPRS_HEURSEARCH_LOCAL_SEARCH_LARGE_NEIGHBOURHOOD , LocalSearchNodeNeighbourhood = XPRS_HEURSEARCH_LOCAL_SEARCH_NODE_NEIGHBOURHOOD , LocalSearchSolutionNeighbourhood = XPRS_HEURSEARCH_LOCAL_SEARCH_SOLUTION_NEIGHBOURHOOD }
	HeuristicSearchSelect enumeration. More...

enum class	HeuristicStrategy : int { Automatic = XPRS_HEURSTRATEGY_AUTOMATIC , None = XPRS_HEURSTRATEGY_NONE , Basic = XPRS_HEURSTRATEGY_BASIC , Enhanced = XPRS_HEURSTRATEGY_ENHANCED , Extensive = XPRS_HEURSTRATEGY_EXTENSIVE }
	HeuristicStrategy enumeration. More...

enum class	IISOps : int { Binary = XPRS_IISOPS_BINARY , ZeroLower = XPRS_IISOPS_ZEROLOWER , FixedVar = XPRS_IISOPS_FIXEDVAR , Bound = XPRS_IISOPS_BOUND , GenIntegrality = XPRS_IISOPS_GENINTEGRALITY , Integrality = XPRS_IISOPS_INTEGRALITY , Variable = XPRS_IISOPS_VARIABLE , Equality = XPRS_IISOPS_EQUALITY , General = XPRS_IISOPS_GENERAL , PwL = XPRS_IISOPS_PWL , SET = XPRS_IISOPS_SET , Indicator = XPRS_IISOPS_INDICATOR , Delayed = XPRS_IISOPS_DELAYED , Constraint = XPRS_IISOPS_CONSTRAINT }
	IISOps enumeration. More...

enum class	IISSolStatus : int { Unstarted = XPRS_IIS_UNSTARTED , Feasible = XPRS_IIS_FEASIBLE , Completed = XPRS_IIS_COMPLETED , Unfinished = XPRS_IIS_UNFINISHED }
	IISSolStatus enumeration. More...

enum class	LPFlags : int { Dual = XPRS_LPFLAGS_DUAL , Primal = XPRS_LPFLAGS_PRIMAL , Barrier = XPRS_LPFLAGS_BARRIER , Network = XPRS_LPFLAGS_NETWORK }
	LPFlags enumeration. More...

enum class	LPStatus : int { Unstarted = XPRS_LP_UNSTARTED , Optimal = XPRS_LP_OPTIMAL , Infeasible = XPRS_LP_INFEAS , CutOff = XPRS_LP_CUTOFF , Unfinished = XPRS_LP_UNFINISHED , Unbounded = XPRS_LP_UNBOUNDED , CutOffInDual = XPRS_LP_CUTOFF_IN_DUAL , Unsolved = XPRS_LP_UNSOLVED , Nonconvex = XPRS_LP_NONCONVEX }
	LPStatus enumeration. More...

enum class	MipPresolve : int { ReducedCostFixing = XPRS_MIPPRESOLVE_REDUCED_COST_FIXING , LogicPreprossessing = XPRS_MIPPRESOLVE_LOGIC_PREPROCESSING , AllowChangeBounds = XPRS_MIPPRESOLVE_ALLOW_CHANGE_BOUNDS , DualReductions = XPRS_MIPPRESOLVE_DUAL_REDUCTIONS , GlobalCoefficientTightening = XPRS_MIPPRESOLVE_GLOBAL_COEFFICIENT_TIGHTENING , ObjectiveBasedReductions = XPRS_MIPPRESOLVE_OBJECTIVE_BASED_REDUCTIONS , AllowTreeRestart = XPRS_MIPPRESOLVE_ALLOW_TREE_RESTART , SymmetryReductions = XPRS_MIPPRESOLVE_SYMMETRY_REDUCTIONS }
	MipPresolve enumeration. More...

enum class	MipRestart : int { Default = XPRS_MIPRESTART_DEFAULT , Off = XPRS_MIPRESTART_OFF , Moderate = XPRS_MIPRESTART_MODERATE , Aggressive = XPRS_MIPRESTART_AGGRESSIVE }
	MipRestart enumeration. More...

enum class	MIPStatus : int { NotLoaded = XPRS_MIP_NOT_LOADED , LPNotOptimal = XPRS_MIP_LP_NOT_OPTIMAL , LPOptimal = XPRS_MIP_LP_OPTIMAL , NoSolutionFound = XPRS_MIP_NO_SOL_FOUND , Solution = XPRS_MIP_SOLUTION , Infeasible = XPRS_MIP_INFEAS , Optimal = XPRS_MIP_OPTIMAL , Unbounded = XPRS_MIP_UNBOUNDED }
	MIPStatus enumeration. More...

enum class	MultiObjOps : int { Enabled = XPRS_MULTIOBJOPS_ENABLED , Presolve = XPRS_MULTIOBJOPS_PRESOLVE , RCFixing = XPRS_MULTIOBJOPS_RCFIXING }
	MultiObjOps enumeration. More...

enum class	Namespaces : int { Row = XPRS_NAMES_ROW , Column = XPRS_NAMES_COLUMN , Set = XPRS_NAMES_SET , PwlCons = XPRS_NAMES_PWLCONS , GenCons = XPRS_NAMES_GENCONS , Objective = XPRS_NAMES_OBJECTIVE , Userfunc = XPRS_NAMES_USERFUNC , InternalFunc = XPRS_NAMES_INTERNALFUNC , UserFuncNoCase = XPRS_NAMES_USERFUNCNOCASE , InternalFuncNoCase = XPRS_NAMES_INTERNALFUNCNOCASE }
	Namespaces enumeration. More...

enum class	NodeSelectionCriteria : int { LocalFirst = XPRS_NODESELECTION_LOCAL_FIRST , BestFirst = XPRS_NODESELECTION_BEST_FIRST , LocalDepthFirst = XPRS_NODESELECTION_LOCAL_DEPTH_FIRST , BestFirstThenLocalFirst = XPRS_NODESELECTION_BEST_FIRST_THEN_LOCAL_FIRST , DepthFirst = XPRS_NODESELECTION_DEPTH_FIRST }
	NodeSelectionCriteria enumeration. More...

enum class	ObjControl : int { Priority = XPRS_OBJECTIVE_PRIORITY , Weight = XPRS_OBJECTIVE_WEIGHT , AbsTol = XPRS_OBJECTIVE_ABSTOL , RelTol = XPRS_OBJECTIVE_RELTOL , Rhs = XPRS_OBJECTIVE_RHS }
	ObjControl enumeration. More...

enum class	ObjSense : int { Minimize = XPRS_OBJ_MINIMIZE , Maximize = XPRS_OBJ_MAXIMIZE }
	ObjSense enumeration. More...

enum class	OnOff : int { Off = XPRS_BOOL_OFF , On = XPRS_BOOL_ON }
	OnOff enumeration. More...

enum class	OptimizeType : int { None = XPRS_OPTIMIZETYPE_NONE , Lp = XPRS_OPTIMIZETYPE_LP , Mip = XPRS_OPTIMIZETYPE_MIP , Local = XPRS_OPTIMIZETYPE_LOCAL , Global = XPRS_OPTIMIZETYPE_GLOBAL }
	OptimizeType enumeration. More...

enum class	OutputDetail : int { NoOutput = XPRS_OUTPUTLOG_NO_OUTPUT , FullOutput = XPRS_OUTPUTLOG_FULL_OUTPUT , ErrorsAndWarnings = XPRS_OUTPUTLOG_ERRORS_AND_WARNINGS , ErrorsOnly = XPRS_OUTPUTLOG_ERRORS }
	OutputDetail enumeration. More...

enum class	ParameterType : int { NotDefined = XPRS_TYPE_NOTDEFINED , Integer = XPRS_TYPE_INT , Integer64 = XPRS_TYPE_INT64 , Double = XPRS_TYPE_DOUBLE , String = XPRS_TYPE_STRING }
	ParameterType enumeration. More...

enum class	PreProbing : int { Automatic = XPRS_PREPROBING_AUTOMATIC , Disabled = XPRS_PREPROBING_DISABLED , LightProbing = XPRS_PREPROBING_LIGHT , FullProbing = XPRS_PREPROBING_FULL , FullProbingAndRepeat = XPRS_PREPROBING_FULL_AND_REPEAT }
	PreProbing enumeration. More...

enum class	Presolve : int { NoPrimalInfeasibility = XPRS_PRESOLVE_NOPRIMALINFEASIBILITY , None = XPRS_PRESOLVE_NONE , Default = XPRS_PRESOLVE_DEFAULT , KeepRedundantBounds = XPRS_PRESOLVE_KEEPREDUNDANTBOUNDS }
	Presolve enumeration. More...

enum class	PresolveCoefElim : int { Disabled = XPRS_PRECOEFELIM_DISABLED , Aggressive = XPRS_PRECOEFELIM_AGGRESSIVE , Cautious = XPRS_PRECOEFELIM_CAUTIOUS }
	PresolveCoefElim enumeration. More...

enum class	PresolveDomColumn : int { Automatic = XPRS_PREDOMCOL_AUTOMATIC , Disabled = XPRS_PREDOMCOL_DISABLED , Cautious = XPRS_PREDOMCOL_CAUTIOUS , Aggressive = XPRS_PREDOMCOL_AGGRESSIVE }
	PresolveDomColumn enumeration. More...

enum class	PresolveDomRow : int { Automatic = XPRS_PREDOMROW_AUTOMATIC , Disabled = XPRS_PREDOMROW_DISABLED , Cautious = XPRS_PREDOMROW_CAUTIOUS , Medium = XPRS_PREDOMROW_MEDIUM , Aggressive = XPRS_PREDOMROW_AGGRESSIVE }
	PresolveDomRow enumeration. More...

enum class	PresolveOperations : int { SingletonColumnRemoval = XPRS_PRESOLVEOPS_SINGLETONCOLUMNREMOVAL , SingletonRowRemoval = XPRS_PRESOLVEOPS_SINGLETONROWREMOVAL , ForcingRowRemoval = XPRS_PRESOLVEOPS_FORCINGROWREMOVAL , DualReductions = XPRS_PRESOLVEOPS_DUALREDUCTIONS , RedundantRowRemoval = XPRS_PRESOLVEOPS_REDUNDANTROWREMOVAL , DuplicateColumnRemoval = XPRS_PRESOLVEOPS_DUPLICATECOLUMNREMOVAL , DuplicateRowRemoval = XPRS_PRESOLVEOPS_DUPLICATEROWREMOVAL , StrongDualReductions = XPRS_PRESOLVEOPS_STRONGDUALREDUCTIONS , VariableEliminations = XPRS_PRESOLVEOPS_VARIABLEELIMINATIONS , NoIPReductions = XPRS_PRESOLVEOPS_NOIPREDUCTIONS , NoGlobalChange = XPRS_PRESOLVEOPS_NOGLOBALDOMAINCHANGE , NoAdvancedIPReductions = XPRS_PRESOLVEOPS_NOADVANCEDIPREDUCTIONS , NoIntegerEliminations = XPRS_PRESOLVEOPS_NOINTEGERELIMINATIONS , NoSolutionEnumeration = XPRS_PRESOLVEOPS_NOSOLUTIONENUMERATION , LinearlyDependantRowRemoval = XPRS_PRESOLVEOPS_LINEARLYDEPENDANTROWREMOVAL , NoIntegerVariableAndSOSDetection = XPRS_PRESOLVEOPS_NOINTEGERVARIABLEANDSOSDETECTION , NoImpliedBounds = XPRS_PRESOLVEOPS_NOIMPLIEDBOUNDS , NoCliquePresolve = XPRS_PRESOLVEOPS_NOCLIQUEPRESOLVE , NoMod2Reductions = XPRS_PRESOLVEOPS_NOMOD2REDUCTIONS , NoDualReductionsOnGlobals = XPRS_PRESOLVEOPS_NODUALREDONGLOBALS }
	PresolveOperations enumeration. More...

enum class	PresolveState : int { ProblemLoaded = XPRS_PRESOLVESTATE_PROBLEMLOADED , ProblemLPPresolved = XPRS_PRESOLVESTATE_PROBLEMLPPRESOLVED , ProblemMIPPresolved = XPRS_PRESOLVESTATE_PROBLEMMIPPRESOLVED , SolutionValid = XPRS_PRESOLVESTATE_SOLUTIONVALID }
	PresolveState enumeration. More...

enum class	Pricing : int { Partial = XPRS_PRICING_PARTIAL , Default = XPRS_PRICING_DEFAULT , Devex = XPRS_PRICING_DEVEX }
	Pricing enumeration. More...

enum class	PrimalUnshift : int { AllowDualUnshift = XPRS_PRIMALUNSHIFT_ALLOW_DUAL_UNSHIFT , NoDualUnshift = XPRS_PRIMALUNSHIFT_NO_DUAL_UNSHIFT }
	PrimalUnshift enumeration. More...

enum class	QConvexity : int { Unknown = XPRS_QCONVEXITY_UNKNOWN , NonConvex = XPRS_QCONVEXITY_NONCONVEX , Convex = XPRS_QCONVEXITY_CONVEX , Repairable = XPRS_QCONVEXITY_REPAIRABLE , ConvexCone = XPRS_QCONVEXITY_CONVEXCONE , ConeConvertable = XPRS_QCONVEXITY_CONECONVERTABLE }
	QConvexity enumeration. More...

enum class	RefineOps : int { LPOptimal = XPRS_REFINEOPS_LPOPTIMAL , MIPSolution = XPRS_REFINEOPS_MIPSOLUTION , MIPOptimal = XPRS_REFINEOPS_MIPOPTIMAL , LP = XPRS_REFINEOPS_MIPNODELP , LPPresolve = XPRS_REFINEOPS_LPPRESOLVE , IterativeRefiner = XPRS_REFINEOPS_ITERATIVEREFINER , RefinerPrecision = XPRS_REFINEOPS_REFINERPRECISION , RefinerUsePrimal = XPRS_REFINEOPS_REFINERUSEPRIMAL , RefinerUseDual = XPRS_REFINEOPS_REFINERUSEDUAL , MIPfixglobals = XPRS_REFINEOPS_MIPFIXGLOBALS , MIPfixglobalstarget = XPRS_REFINEOPS_MIPFIXGLOBALSTARGET }
	RefineOps enumeration. More...

enum class	RepairIndefiniteQuadratic : int { RepairIfPossible = XPRS_REPAIRINDEFINITEQ_REPAIR_IF_POSSIBLE , NoRepair = XPRS_REPAIRINDEFINITEQ_NO_REPAIR }
	RepairIndefiniteQuadratic enumeration. More...

enum class	RowFlag : int { Quadratic = XPRS_ROWFLAG_QUADRATIC , Delayed = XPRS_ROWFLAG_DELAYED , ModelCut = XPRS_ROWFLAG_MODELCUT , Indicator = XPRS_ROWFLAG_INDICATOR , Nonlinear = XPRS_ROWFLAG_NONLINEAR }
	RowFlag enumeration. More...

enum struct	RowType : char
	Enumeration for variable/column types. More...

enum class	Scaling : int { RowScaling = XPRS_SCALING_ROW_SCALING , ColumnScaling = XPRS_SCALING_COLUMN_SCALING , RowScalingAgain = XPRS_SCALING_ROW_SCALING_AGAIN , Maximum = XPRS_SCALING_MAXIMUM , CurtisReid = XPRS_SCALING_CURTIS_REID , ByMaxElemNotGeoMean = XPRS_SCALING_BY_MAX_ELEM_NOT_GEO_MEAN , BigMScaling = XPRS_SCALING_BIGM , SimplexObjectiveScaling = XPRS_SCALING_SIMPLEX_OBJECTIVE_SCALING , IgnoreQuadraticRowPart = XPRS_SCALING_IGNORE_QUADRATIC_ROW_PART , ScaleBeforePresolve = XPRS_SCALING_BEFORE_PRESOLVE , NoScalingRowsUp = XPRS_SCALING_NO_SCALING_ROWS_UP , NoScalingColumnsDown = XPRS_SCALING_NO_SCALING_COLUMNS_DOWN , ObjectiveScaling = XPRS_SCALING_DISABLE_GLOBAL_OBJECTIVE_SCALING , RhsScaling = XPRS_SCALING_RHS_SCALING , NoAggressiveQScaling = XPRS_SCALING_NO_AGGRESSIVE_Q_SCALING , SlackScaling = XPRS_SCALING_SLACK_SCALING , Ruiz = XPRS_SCALING_RUIZ , DogLeg = XPRS_SCALING_DOGLEG , BeforeAfterPresolve = XPRS_SCALING_BEFORE_AND_AFTER_PRESOLVE }
	Scaling enumeration. More...

enum struct	SetType : char
	Enumeration for set types. More...

enum class	SolInfo : int { AbsPrimalInfeas = XPRS_SOLINFO_ABSPRIMALINFEAS , RelPrimalInfeas = XPRS_SOLINFO_RELPRIMALINFEAS , AbsDualInfeas = XPRS_SOLINFO_ABSDUALINFEAS , RelDualInfeas = XPRS_SOLINFO_RELDUALINFEAS , MaxMIPFractional = XPRS_SOLINFO_MAXMIPFRACTIONAL , AbsMIPInfeas = XPRS_SOLINFO_ABSMIPINFEAS , RelMIPInfeas = XPRS_SOLINFO_RELMIPINFEAS }
	SolInfo enumeration. More...

enum class	SolStatus : int { NotFound = XPRS_SOLSTATUS_NOTFOUND , Optimal = XPRS_SOLSTATUS_OPTIMAL , Feasible = XPRS_SOLSTATUS_FEASIBLE , Infeasible = XPRS_SOLSTATUS_INFEASIBLE , Unbounded = XPRS_SOLSTATUS_UNBOUNDED }
	SolStatus enumeration. More...

enum class	SolveStatus : int { Unstarted = XPRS_SOLVESTATUS_UNSTARTED , Stopped = XPRS_SOLVESTATUS_STOPPED , Failed = XPRS_SOLVESTATUS_FAILED , Completed = XPRS_SOLVESTATUS_COMPLETED }
	SolveStatus enumeration. More...

enum class	StopType : int { None = XPRS_STOP_NONE , TimeLimit = XPRS_STOP_TIMELIMIT , CtrlC = XPRS_STOP_CTRLC , NodeLimit = XPRS_STOP_NODELIMIT , IterLimit = XPRS_STOP_ITERLIMIT , MIPGap = XPRS_STOP_MIPGAP , SolLimit = XPRS_STOP_SOLLIMIT , GenericError = XPRS_STOP_GENERICERROR , MemoryError = XPRS_STOP_MEMORYERROR , User = XPRS_STOP_USER , SolveComplete = XPRS_STOP_SOLVECOMPLETE , LicenseLost = XPRS_STOP_LICENSELOST , NumericalError = XPRS_STOP_NUMERICALERROR }
	StopType enumeration. More...

enum class	TreeDiagnostics : int { MemoryUsageSummaries = XPRS_TREEDIAGNOSTICS_MEMORY_USAGE_SUMMARIES , MemorySavedReports = XPRS_TREEDIAGNOSTICS_MEMORY_SAVED_REPORTS }
	TreeDiagnostics enumeration. More...

enum class	TunerHistory : int { Ignore = XPRS_TUNERHISTORY_IGNORE , Append = XPRS_TUNERHISTORY_APPEND , Reuse = XPRS_TUNERHISTORY_REUSE }
	TunerHistory enumeration. More...

enum class	TunerMethod : int { Automatic = XPRS_TUNERMETHOD_AUTOMATIC , LpQuick = XPRS_TUNERMETHOD_LPQUICK , MipQuick = XPRS_TUNERMETHOD_MIPQUICK , MipComprehensive = XPRS_TUNERMETHOD_MIPCOMPREHENSIVE , MipRootFocus = XPRS_TUNERMETHOD_MIPROOTFOCUS , MipTreeFocus = XPRS_TUNERMETHOD_MIPTREEFOCUS , MipSimple = XPRS_TUNERMETHOD_MIPSIMPLE , SlpQuick = XPRS_TUNERMETHOD_SLPQUICK , MiSlpQuick = XPRS_TUNERMETHOD_MISLPQUICK , MipHeuristics = XPRS_TUNERMETHOD_MIPHEURISTICS , GlobalQuick = XPRS_TUNERMETHOD_GLOBALQUICK , LpNumerics = XPRS_TUNERMETHOD_LPNUMERICS }
	TunerMethod enumeration. More...

enum class	TunerMode : int { Automatic = XPRS_TUNERMODE_AUTOMATIC , Off = XPRS_TUNERMODE_OFF , On = XPRS_TUNERMODE_ON }
	TunerMode enumeration. More...

enum class	TunerRootAlg : int { Dual = XPRS_TUNERROOTALG_DUAL , Primal = XPRS_TUNERROOTALG_PRIMAL , Barrier = XPRS_TUNERROOTALG_BARRIER , Network = XPRS_TUNERROOTALG_NETWORK }
	TunerRootAlg enumeration. More...

enum class	TunerTarget : int { Automatic = XPRS_TUNERTARGET_AUTOMATIC , TimeGap = XPRS_TUNERTARGET_TIMEGAP , TimeBound = XPRS_TUNERTARGET_TIMEBOUND , TimeObjval = XPRS_TUNERTARGET_TIMEOBJVAL , Integral = XPRS_TUNERTARGET_INTEGRAL , SlpTime = XPRS_TUNERTARGET_SLPTIME , SlpObjval = XPRS_TUNERTARGET_SLPOBJVAL , SlpValidation = XPRS_TUNERTARGET_SLPVALIDATION , Gap = XPRS_TUNERTARGET_GAP , Bound = XPRS_TUNERTARGET_BOUND , Objval = XPRS_TUNERTARGET_OBJVAL , PrimalIntegral = XPRS_TUNERTARGET_PRIMALINTEGRAL }
	TunerTarget enumeration. More...

enum class	UserSolStatus : int { NotChecked = XPRS_USERSOLSTATUS_NOT_CHECKED , AcceptedFeasible = XPRS_USERSOLSTATUS_ACCEPTED_FEASIBLE , AcceptedOptimized = XPRS_USERSOLSTATUS_ACCEPTED_OPTIMIZED , SearchedSol = XPRS_USERSOLSTATUS_SEARCHED_SOL , SearchedNoSol = XPRS_USERSOLSTATUS_SEARCHED_NOSOL , RejectedInfeasNoSearch = XPRS_USERSOLSTATUS_REJECTED_INFEAS_NOSEARCH , RejectedPartialNoSearch = XPRS_USERSOLSTATUS_REJECTED_PARTIAL_NOSEARCH , RejectedFailedOptimize = XPRS_USERSOLSTATUS_REJECTED_FAILED_OPTIMIZE , Dropped = XPRS_USERSOLSTATUS_DROPPED , RejectedCutoff = XPRS_USERSOLSTATUS_REJECTED_CUTOFF }
	UserSolStatus enumeration. More...

enum class	VariableSelection : int { Automatic = XPRS_VARSELECTION_AUTOMATIC , MinimumUpDownPseudoCosts = XPRS_VARSELECTION_MIN_UPDOWN_PSEUDO_COSTS , SumupDownPseudoCosts = XPRS_VARSELECTION_SUM_UPDOWN_PSEUDO_COSTS , MaximumUpDownPseudoCostsPlusTwiceMinimum = XPRS_VARSELECTION_MAX_UPDOWN_PSEUDO_COSTS_PLUS_TWICE_MIN , MaximumUpDownPseudoCosts = XPRS_VARSELECTION_MAX_UPDOWN_PSEUDO_COSTS , DownPseudoCost = XPRS_VARSELECTION_DOWN_PSEUDO_COST , UpPseudoCost = XPRS_VARSELECTION_UP_PSEUDO_COST }
	VariableSelection enumeration. More...

Functions
template<typename... Args>
auto	combineHash (Args const &... args) -> std::size_t
	Combine the hash codes of several objects.

template<typename... T>
auto	format (std::string const &format, T... args) -> std::string
	Formatted printing to a string.

template<typename T , typename... D>
auto	makeArray (D... dims) -> typename MakeArray< T, sizeof...(D)>::array_type
	Create a D-dimensional array with values of type T.

template<typename T , typename... Args>
auto	packToArray (Args... args) -> std::vector< T >
	Convert a parameter pack into an array.

template<typename T , typename std::enable_if< has_size< T >::value, bool >::type = true>
auto	sizeHint (T const &t) -> int
	Get the number of elements in `t`.

Detailed Description

The namespace that contains all functions, constants, etc of the Xpress Solver.

Enumeration Type Documentation

AllowCompute

enum class xpress::AllowCompute : int

strong

AllowCompute enumeration.

Enumerator
Always	`XPRS_ALLOW_COMPUTE_ALWAYS`.
Never	`XPRS_ALLOW_COMPUTE_NEVER`.
Default	`XPRS_ALLOW_COMPUTE_DEFAULT`.

AlwaysNeverAutomatic

enum class xpress::AlwaysNeverAutomatic : int

strong

AlwaysNeverAutomatic enumeration.

Enumerator
Automatic	`XPRS_ANA_AUTOMATIC`.
Never	`XPRS_ANA_NEVER`.
Always	`XPRS_ANA_ALWAYS`.

BacktrackAlg

enum class xpress::BacktrackAlg : int

strong

BacktrackAlg enumeration.

Enumerator
BestEstimate	`XPRS_BACKTRACKALG_BEST_ESTIMATE`.
BestBound	`XPRS_BACKTRACKALG_BEST_BOUND`.
DeepestNode	`XPRS_BACKTRACKALG_DEEPEST_NODE`.
HighestNode	`XPRS_BACKTRACKALG_HIGHEST_NODE`.
EarliestNode	`XPRS_BACKTRACKALG_EARLIEST_NODE`.
LatestNode	`XPRS_BACKTRACKALG_LATEST_NODE`.
Random	`XPRS_BACKTRACKALG_RANDOM`.
MinimumInfeas	`XPRS_BACKTRACKALG_MIN_INFEAS`.
BestEstimateWithMinimumInfeas	`XPRS_BACKTRACKALG_BEST_ESTIMATE_MIN_INFEAS`.
DeepestBestEstimate	`XPRS_BACKTRACKALG_DEEPEST_BEST_ESTIMATE`.

BARHGOps

enum class xpress::BARHGOps : int

strong

BARHGOps enumeration.

Enumerator
AsymAvg	`XPRS_BARHGOPS_ASYM_AVG`.
StartL1	`XPRS_BARHGOPS_START_L1`.
StartL2	`XPRS_BARHGOPS_START_L2`.
StartLInf	`XPRS_BARHGOPS_START_LINF`.
SqrtOmega	`XPRS_BARHGOPS_SQRT_OMEGA`.
OmegaContract	`XPRS_BARHGOPS_OMEGA_CONTRACT`.
OmegaInf	`XPRS_BARHGOPS_OMEGA_INF`.

BarOrder

enum class xpress::BarOrder : int

strong

BarOrder enumeration.

Enumerator
Default	`XPRS_BAR_DEFAULT`.
MinDegree	`XPRS_BAR_MIN_DEGREE`.
MinLocalFill	`XPRS_BAR_MIN_LOCAL_FILL`.
NestedDissection	`XPRS_BAR_NESTED_DISSECTION`.

BarPresolveOps

enum class xpress::BarPresolveOps : int

strong

BarPresolveOps enumeration.

Enumerator
StandardPresolve	`XPRS_BARPRESOLVEOPS_STANDARD_PRESOLVE`.
ExtraBarrierPresolve	`XPRS_BARPRESOLVEOPS_EXTRA_BARRIER_PRESOLVE`.

BranchChoice

enum class xpress::BranchChoice : int

strong

BranchChoice enumeration.

Enumerator
MinimumEstimateFirst	`XPRS_BRANCH_MIN_EST_FIRST`.
MaximumEstimateFirst	`XPRS_BRANCH_MAX_EST_FIRST`.

CholeskyAlgorithm

enum class xpress::CholeskyAlgorithm : int

strong

CholeskyAlgorithm enumeration.

Enumerator
PullCholesky	`XPRS_ALG_PULL_CHOLESKY`.
PushCholesky	`XPRS_ALG_PUSH_CHOLESKY`.

Clamping

enum class xpress::Clamping : int

strong

Clamping enumeration.

Enumerator
Primal	`XPRS_CLAMPING_PRIMAL`.
Dual	`XPRS_CLAMPING_DUAL`.
Slacks	`XPRS_CLAMPING_SLACKS`.
RDJ	`XPRS_CLAMPING_RDJ`.

ColumnType

enum struct xpress::ColumnType : char

strong

Enumeration for variable/column types.

Since: 44.00

ComputeLog

enum class xpress::ComputeLog : int

strong

ComputeLog enumeration.

Enumerator
Never	`XPRS_COMPUTELOG_NEVER`.
RealTime	`XPRS_COMPUTELOG_REALTIME`.
OnCompletion	`XPRS_COMPUTELOG_ONCOMPLETION`.
OnError	`XPRS_COMPUTELOG_ONERROR`.

CrossoverDynamicReduction

enum class xpress::CrossoverDynamicReduction : int

strong

CrossoverDynamicReduction enumeration.

Enumerator
BeforeCrossover	`XPRS_XDRPBEFORE_CROSSOVER`.
InsideCrossover	`XPRS_XDRPINSIDE_CROSSOVER`.
AggressiveBeforeCrossover	`XPRS_XDRPAGGRESSIVE_BEFORE_CROSSOVER`.

CutSelect

enum class xpress::CutSelect : int

strong

CutSelect enumeration.

Enumerator
Clique	`XPRS_CUTSELECT_CLIQUE`.
Mir	`XPRS_CUTSELECT_MIR`.
Cover	`XPRS_CUTSELECT_COVER`.
Flowpath	`XPRS_CUTSELECT_FLOWPATH`.
Implication	`XPRS_CUTSELECT_IMPLICATION`.
LiftAndProject	`XPRS_CUTSELECT_LIFT_AND_PROJECT`.
DisableCutRows	`XPRS_CUTSELECT_DISABLE_CUT_ROWS`.
GubCover	`XPRS_CUTSELECT_GUB_COVER`.
Default	`XPRS_CUTSELECT_DEFAULT`.

CutStrategy

enum class xpress::CutStrategy : int

strong

CutStrategy enumeration.

Enumerator
Default	`XPRS_CUTSTRATEGY_DEFAULT`.
None	`XPRS_CUTSTRATEGY_NONE`.
Conservative	`XPRS_CUTSTRATEGY_CONSERVATIVE`.
Moderate	`XPRS_CUTSTRATEGY_MODERATE`.
Aggressive	`XPRS_CUTSTRATEGY_AGGRESSIVE`.

DefaultAlg

enum class xpress::DefaultAlg : int

strong

DefaultAlg enumeration.

Enumerator
Default	`XPRS_ALG_DEFAULT`.
Dual	`XPRS_ALG_DUAL`.
Primal	`XPRS_ALG_PRIMAL`.
Barrier	`XPRS_ALG_BARRIER`.
Network	`XPRS_ALG_NETWORK`.

DualGradient

enum class xpress::DualGradient : int

strong

DualGradient enumeration.

Enumerator
Automatic	`XPRS_DUALGRADIENT_AUTOMATIC`.
Devex	`XPRS_DUALGRADIENT_DEVEX`.
SteepestEdge	`XPRS_DUALGRADIENT_STEEPESTEDGE`.

DualizeOps

enum class xpress::DualizeOps : int

strong

DualizeOps enumeration.

Enumerator
SwitchAlgorithm	`XPRS_DUALIZEOPS_SWITCHALGORITHM`.

DualStrategy

enum class xpress::DualStrategy : int

strong

DualStrategy enumeration.

Enumerator
RemoveInfeasibilitiesWithPrimal	`XPRS_DUALSTRATEGY_REMOVE_INFEAS_WITH_PRIMAL`.
RemoveInfeasibilitiesWithDual	`XPRS_DUALSTRATEGY_REMOVE_INFEAS_WITH_DUAL`.

FeasibilityPump

enum class xpress::FeasibilityPump : int

strong

FeasibilityPump enumeration.

Enumerator
Automatic	`XPRS_FEASIBILITYPUMP_AUTOMATIC`.
Never	`XPRS_FEASIBILITYPUMP_NEVER`.
Always	`XPRS_FEASIBILITYPUMP_ALWAYS`.
LastResort	`XPRS_FEASIBILITYPUMP_LASTRESORT`.

GenConsType

enum class xpress::GenConsType : int

strong

GenConsType enumeration.

Enumerator
Max	`XPRS_GENCONS_MAX`.
Min	`XPRS_GENCONS_MIN`.
And	`XPRS_GENCONS_AND`.
Or	`XPRS_GENCONS_OR`.
Abs	`XPRS_GENCONS_ABS`.

Globalboundingbox

enum class xpress::Globalboundingbox : int

strong

Globalboundingbox enumeration.

Enumerator
NotApplied	`XPRS_GLOBALBOUNDINGBOX_NOT_APPLIED`.
Original	`XPRS_GLOBALBOUNDINGBOX_ORIGINAL`.
Auxiliary	`XPRS_GLOBALBOUNDINGBOX_AUXILIARY`.

GlobalLSHEURStrategy

enum class xpress::GlobalLSHEURStrategy : int

strong

GlobalLSHEURStrategy enumeration.

Enumerator
Default	`XPRS_GLOBALLSHEURSTRATEGY_DEFAULT`.
None	`XPRS_GLOBALLSHEURSTRATEGY_NONE`.
Conservative	`XPRS_GLOBALLSHEURSTRATEGY_CONSERVATIVE`.
Moderate	`XPRS_GLOBALLSHEURSTRATEGY_MODERATE`.
Aggressive	`XPRS_GLOBALLSHEURSTRATEGY_AGGRESSIVE`.

HeuristicSearchSelect

enum class xpress::HeuristicSearchSelect : int

strong

HeuristicSearchSelect enumeration.

Enumerator
LocalSearchLargeNeighbourhood	`XPRS_HEURSEARCH_LOCAL_SEARCH_LARGE_NEIGHBOURHOOD`.
LocalSearchNodeNeighbourhood	`XPRS_HEURSEARCH_LOCAL_SEARCH_NODE_NEIGHBOURHOOD`.
LocalSearchSolutionNeighbourhood	`XPRS_HEURSEARCH_LOCAL_SEARCH_SOLUTION_NEIGHBOURHOOD`.

HeuristicStrategy

enum class xpress::HeuristicStrategy : int

strong

HeuristicStrategy enumeration.

Enumerator
Automatic	`XPRS_HEURSTRATEGY_AUTOMATIC`.
None	`XPRS_HEURSTRATEGY_NONE`.
Basic	`XPRS_HEURSTRATEGY_BASIC`.
Enhanced	`XPRS_HEURSTRATEGY_ENHANCED`.
Extensive	`XPRS_HEURSTRATEGY_EXTENSIVE`.

IISOps

enum class xpress::IISOps : int

strong

IISOps enumeration.

Enumerator
Binary	`XPRS_IISOPS_BINARY`.
ZeroLower	`XPRS_IISOPS_ZEROLOWER`.
FixedVar	`XPRS_IISOPS_FIXEDVAR`.
Bound	`XPRS_IISOPS_BOUND`.
GenIntegrality	`XPRS_IISOPS_GENINTEGRALITY`.
Integrality	`XPRS_IISOPS_INTEGRALITY`.
Variable	`XPRS_IISOPS_VARIABLE`.
Equality	`XPRS_IISOPS_EQUALITY`.
General	`XPRS_IISOPS_GENERAL`.
PwL	`XPRS_IISOPS_PWL`.
SET	`XPRS_IISOPS_SET`.
Indicator	`XPRS_IISOPS_INDICATOR`.
Delayed	`XPRS_IISOPS_DELAYED`.
Constraint	`XPRS_IISOPS_CONSTRAINT`.

IISSolStatus

enum class xpress::IISSolStatus : int

strong

IISSolStatus enumeration.

Enumerator
Unstarted	`XPRS_IIS_UNSTARTED`.
Feasible	`XPRS_IIS_FEASIBLE`.
Completed	`XPRS_IIS_COMPLETED`.
Unfinished	`XPRS_IIS_UNFINISHED`.

LPFlags

enum class xpress::LPFlags : int

strong

LPFlags enumeration.

Enumerator
Dual	`XPRS_LPFLAGS_DUAL`.
Primal	`XPRS_LPFLAGS_PRIMAL`.
Barrier	`XPRS_LPFLAGS_BARRIER`.
Network	`XPRS_LPFLAGS_NETWORK`.

LPStatus

enum class xpress::LPStatus : int

strong

LPStatus enumeration.

Enumerator
Unstarted	`XPRS_LP_UNSTARTED`.
Optimal	`XPRS_LP_OPTIMAL`.
Infeasible	`XPRS_LP_INFEAS`.
CutOff	`XPRS_LP_CUTOFF`.
Unfinished	`XPRS_LP_UNFINISHED`.
Unbounded	`XPRS_LP_UNBOUNDED`.
CutOffInDual	`XPRS_LP_CUTOFF_IN_DUAL`.
Unsolved	`XPRS_LP_UNSOLVED`.
Nonconvex	`XPRS_LP_NONCONVEX`.

MipPresolve

enum class xpress::MipPresolve : int

strong

MipPresolve enumeration.

Enumerator
ReducedCostFixing	`XPRS_MIPPRESOLVE_REDUCED_COST_FIXING`.
LogicPreprossessing	`XPRS_MIPPRESOLVE_LOGIC_PREPROCESSING`.
AllowChangeBounds	`XPRS_MIPPRESOLVE_ALLOW_CHANGE_BOUNDS`.
DualReductions	`XPRS_MIPPRESOLVE_DUAL_REDUCTIONS`.
GlobalCoefficientTightening	`XPRS_MIPPRESOLVE_GLOBAL_COEFFICIENT_TIGHTENING`.
ObjectiveBasedReductions	`XPRS_MIPPRESOLVE_OBJECTIVE_BASED_REDUCTIONS`.
AllowTreeRestart	`XPRS_MIPPRESOLVE_ALLOW_TREE_RESTART`.
SymmetryReductions	`XPRS_MIPPRESOLVE_SYMMETRY_REDUCTIONS`.

MipRestart

enum class xpress::MipRestart : int

strong

MipRestart enumeration.

Enumerator
Default	`XPRS_MIPRESTART_DEFAULT`.
Off	`XPRS_MIPRESTART_OFF`.
Moderate	`XPRS_MIPRESTART_MODERATE`.
Aggressive	`XPRS_MIPRESTART_AGGRESSIVE`.

MIPStatus

enum class xpress::MIPStatus : int

strong

MIPStatus enumeration.

Enumerator
NotLoaded	`XPRS_MIP_NOT_LOADED`.
LPNotOptimal	`XPRS_MIP_LP_NOT_OPTIMAL`.
LPOptimal	`XPRS_MIP_LP_OPTIMAL`.
NoSolutionFound	`XPRS_MIP_NO_SOL_FOUND`.
Solution	`XPRS_MIP_SOLUTION`.
Infeasible	`XPRS_MIP_INFEAS`.
Optimal	`XPRS_MIP_OPTIMAL`.
Unbounded	`XPRS_MIP_UNBOUNDED`.

MultiObjOps

enum class xpress::MultiObjOps : int

strong

MultiObjOps enumeration.

Enumerator
Enabled	`XPRS_MULTIOBJOPS_ENABLED`.
Presolve	`XPRS_MULTIOBJOPS_PRESOLVE`.
RCFixing	`XPRS_MULTIOBJOPS_RCFIXING`.

Namespaces

enum class xpress::Namespaces : int

strong

Namespaces enumeration.

Enumerator
Row	`XPRS_NAMES_ROW`.
Column	`XPRS_NAMES_COLUMN`.
Set	`XPRS_NAMES_SET`.
PwlCons	`XPRS_NAMES_PWLCONS`.
GenCons	`XPRS_NAMES_GENCONS`.
Objective	`XPRS_NAMES_OBJECTIVE`.
Userfunc	`XPRS_NAMES_USERFUNC`.
InternalFunc	`XPRS_NAMES_INTERNALFUNC`.
UserFuncNoCase	`XPRS_NAMES_USERFUNCNOCASE`.
InternalFuncNoCase	`XPRS_NAMES_INTERNALFUNCNOCASE`.

NodeSelectionCriteria

enum class xpress::NodeSelectionCriteria : int

strong

NodeSelectionCriteria enumeration.

Enumerator
LocalFirst	`XPRS_NODESELECTION_LOCAL_FIRST`.
BestFirst	`XPRS_NODESELECTION_BEST_FIRST`.
LocalDepthFirst	`XPRS_NODESELECTION_LOCAL_DEPTH_FIRST`.
BestFirstThenLocalFirst	`XPRS_NODESELECTION_BEST_FIRST_THEN_LOCAL_FIRST`.
DepthFirst	`XPRS_NODESELECTION_DEPTH_FIRST`.

ObjControl

enum class xpress::ObjControl : int

strong

ObjControl enumeration.

Enumerator
Priority	`XPRS_OBJECTIVE_PRIORITY`.
Weight	`XPRS_OBJECTIVE_WEIGHT`.
AbsTol	`XPRS_OBJECTIVE_ABSTOL`.
RelTol	`XPRS_OBJECTIVE_RELTOL`.
Rhs	`XPRS_OBJECTIVE_RHS`.

ObjSense

enum class xpress::ObjSense : int

strong

ObjSense enumeration.

Enumerator
Minimize	`XPRS_OBJ_MINIMIZE`.
Maximize	`XPRS_OBJ_MAXIMIZE`.

OnOff

enum class xpress::OnOff : int

strong

OnOff enumeration.

Enumerator
Off	`XPRS_BOOL_OFF`.
On	`XPRS_BOOL_ON`.

OptimizeType

enum class xpress::OptimizeType : int

strong

OptimizeType enumeration.

Enumerator
None	`XPRS_OPTIMIZETYPE_NONE`.
Lp	`XPRS_OPTIMIZETYPE_LP`.
Mip	`XPRS_OPTIMIZETYPE_MIP`.
Local	`XPRS_OPTIMIZETYPE_LOCAL`.
Global	`XPRS_OPTIMIZETYPE_GLOBAL`.

OutputDetail

enum class xpress::OutputDetail : int

strong

OutputDetail enumeration.

Enumerator
NoOutput	`XPRS_OUTPUTLOG_NO_OUTPUT`.
FullOutput	`XPRS_OUTPUTLOG_FULL_OUTPUT`.
ErrorsAndWarnings	`XPRS_OUTPUTLOG_ERRORS_AND_WARNINGS`.
ErrorsOnly	`XPRS_OUTPUTLOG_ERRORS`.

ParameterType

enum class xpress::ParameterType : int

strong

ParameterType enumeration.

Enumerator
NotDefined	`XPRS_TYPE_NOTDEFINED`.
Integer	`XPRS_TYPE_INT`.
Integer64	`XPRS_TYPE_INT64`.
Double	`XPRS_TYPE_DOUBLE`.
String	`XPRS_TYPE_STRING`.

PreProbing

enum class xpress::PreProbing : int

strong

PreProbing enumeration.

Enumerator
Automatic	`XPRS_PREPROBING_AUTOMATIC`.
Disabled	`XPRS_PREPROBING_DISABLED`.
LightProbing	`XPRS_PREPROBING_LIGHT`.
FullProbing	`XPRS_PREPROBING_FULL`.
FullProbingAndRepeat	`XPRS_PREPROBING_FULL_AND_REPEAT`.

Presolve

enum class xpress::Presolve : int

strong

Presolve enumeration.

Enumerator
NoPrimalInfeasibility	`XPRS_PRESOLVE_NOPRIMALINFEASIBILITY`.
None	`XPRS_PRESOLVE_NONE`.
Default	`XPRS_PRESOLVE_DEFAULT`.
KeepRedundantBounds	`XPRS_PRESOLVE_KEEPREDUNDANTBOUNDS`.

PresolveCoefElim

enum class xpress::PresolveCoefElim : int

strong

PresolveCoefElim enumeration.

Enumerator
Disabled	`XPRS_PRECOEFELIM_DISABLED`.
Aggressive	`XPRS_PRECOEFELIM_AGGRESSIVE`.
Cautious	`XPRS_PRECOEFELIM_CAUTIOUS`.

PresolveDomColumn

enum class xpress::PresolveDomColumn : int

strong

PresolveDomColumn enumeration.

Enumerator
Automatic	`XPRS_PREDOMCOL_AUTOMATIC`.
Disabled	`XPRS_PREDOMCOL_DISABLED`.
Cautious	`XPRS_PREDOMCOL_CAUTIOUS`.
Aggressive	`XPRS_PREDOMCOL_AGGRESSIVE`.

PresolveDomRow

enum class xpress::PresolveDomRow : int

strong

PresolveDomRow enumeration.

Enumerator
Automatic	`XPRS_PREDOMROW_AUTOMATIC`.
Disabled	`XPRS_PREDOMROW_DISABLED`.
Cautious	`XPRS_PREDOMROW_CAUTIOUS`.
Medium	`XPRS_PREDOMROW_MEDIUM`.
Aggressive	`XPRS_PREDOMROW_AGGRESSIVE`.

PresolveOperations

enum class xpress::PresolveOperations : int

strong

PresolveOperations enumeration.

Enumerator
SingletonColumnRemoval	`XPRS_PRESOLVEOPS_SINGLETONCOLUMNREMOVAL`.
SingletonRowRemoval	`XPRS_PRESOLVEOPS_SINGLETONROWREMOVAL`.
ForcingRowRemoval	`XPRS_PRESOLVEOPS_FORCINGROWREMOVAL`.
DualReductions	`XPRS_PRESOLVEOPS_DUALREDUCTIONS`.
RedundantRowRemoval	`XPRS_PRESOLVEOPS_REDUNDANTROWREMOVAL`.
DuplicateColumnRemoval	`XPRS_PRESOLVEOPS_DUPLICATECOLUMNREMOVAL`.
DuplicateRowRemoval	`XPRS_PRESOLVEOPS_DUPLICATEROWREMOVAL`.
StrongDualReductions	`XPRS_PRESOLVEOPS_STRONGDUALREDUCTIONS`.
VariableEliminations	`XPRS_PRESOLVEOPS_VARIABLEELIMINATIONS`.
NoIPReductions	`XPRS_PRESOLVEOPS_NOIPREDUCTIONS`.
NoGlobalChange	`XPRS_PRESOLVEOPS_NOGLOBALDOMAINCHANGE`.
NoAdvancedIPReductions	`XPRS_PRESOLVEOPS_NOADVANCEDIPREDUCTIONS`.
NoIntegerEliminations	`XPRS_PRESOLVEOPS_NOINTEGERELIMINATIONS`.
NoSolutionEnumeration	`XPRS_PRESOLVEOPS_NOSOLUTIONENUMERATION`.
LinearlyDependantRowRemoval	`XPRS_PRESOLVEOPS_LINEARLYDEPENDANTROWREMOVAL`.
NoIntegerVariableAndSOSDetection	`XPRS_PRESOLVEOPS_NOINTEGERVARIABLEANDSOSDETECTION`.
NoImpliedBounds	`XPRS_PRESOLVEOPS_NOIMPLIEDBOUNDS`.
NoCliquePresolve	`XPRS_PRESOLVEOPS_NOCLIQUEPRESOLVE`.
NoMod2Reductions	`XPRS_PRESOLVEOPS_NOMOD2REDUCTIONS`.
NoDualReductionsOnGlobals	`XPRS_PRESOLVEOPS_NODUALREDONGLOBALS`.

PresolveState

enum class xpress::PresolveState : int

strong

PresolveState enumeration.

Enumerator
ProblemLoaded	`XPRS_PRESOLVESTATE_PROBLEMLOADED`.
ProblemLPPresolved	`XPRS_PRESOLVESTATE_PROBLEMLPPRESOLVED`.
ProblemMIPPresolved	`XPRS_PRESOLVESTATE_PROBLEMMIPPRESOLVED`.
SolutionValid	`XPRS_PRESOLVESTATE_SOLUTIONVALID`.

Pricing

enum class xpress::Pricing : int

strong

Pricing enumeration.

Enumerator
Partial	`XPRS_PRICING_PARTIAL`.
Default	`XPRS_PRICING_DEFAULT`.
Devex	`XPRS_PRICING_DEVEX`.

PrimalUnshift

enum class xpress::PrimalUnshift : int

strong

PrimalUnshift enumeration.

Enumerator
AllowDualUnshift	`XPRS_PRIMALUNSHIFT_ALLOW_DUAL_UNSHIFT`.
NoDualUnshift	`XPRS_PRIMALUNSHIFT_NO_DUAL_UNSHIFT`.

QConvexity

enum class xpress::QConvexity : int

strong

QConvexity enumeration.

Enumerator
Unknown	`XPRS_QCONVEXITY_UNKNOWN`.
NonConvex	`XPRS_QCONVEXITY_NONCONVEX`.
Convex	`XPRS_QCONVEXITY_CONVEX`.
Repairable	`XPRS_QCONVEXITY_REPAIRABLE`.
ConvexCone	`XPRS_QCONVEXITY_CONVEXCONE`.
ConeConvertable	`XPRS_QCONVEXITY_CONECONVERTABLE`.

RefineOps

enum class xpress::RefineOps : int

strong

RefineOps enumeration.

Enumerator
LPOptimal	`XPRS_REFINEOPS_LPOPTIMAL`.
MIPSolution	`XPRS_REFINEOPS_MIPSOLUTION`.
MIPOptimal	`XPRS_REFINEOPS_MIPOPTIMAL`.
LP	`XPRS_REFINEOPS_MIPNODELP`.
LPPresolve	`XPRS_REFINEOPS_LPPRESOLVE`.
IterativeRefiner	`XPRS_REFINEOPS_ITERATIVEREFINER`.
RefinerPrecision	`XPRS_REFINEOPS_REFINERPRECISION`.
RefinerUsePrimal	`XPRS_REFINEOPS_REFINERUSEPRIMAL`.
RefinerUseDual	`XPRS_REFINEOPS_REFINERUSEDUAL`.
MIPfixglobals	`XPRS_REFINEOPS_MIPFIXGLOBALS`.
MIPfixglobalstarget	`XPRS_REFINEOPS_MIPFIXGLOBALSTARGET`.

RepairIndefiniteQuadratic

enum class xpress::RepairIndefiniteQuadratic : int

strong

RepairIndefiniteQuadratic enumeration.

Enumerator
RepairIfPossible	`XPRS_REPAIRINDEFINITEQ_REPAIR_IF_POSSIBLE`.
NoRepair	`XPRS_REPAIRINDEFINITEQ_NO_REPAIR`.

RowFlag

enum class xpress::RowFlag : int

strong

RowFlag enumeration.

Enumerator
Quadratic	`XPRS_ROWFLAG_QUADRATIC`.
Delayed	`XPRS_ROWFLAG_DELAYED`.
ModelCut	`XPRS_ROWFLAG_MODELCUT`.
Indicator	`XPRS_ROWFLAG_INDICATOR`.
Nonlinear	`XPRS_ROWFLAG_NONLINEAR`.

RowType

enum struct xpress::RowType : char

strong

Enumeration for variable/column types.

Since: 44.00

Scaling

enum class xpress::Scaling : int

strong

Scaling enumeration.

Enumerator
RowScaling	`XPRS_SCALING_ROW_SCALING`.
ColumnScaling	`XPRS_SCALING_COLUMN_SCALING`.
RowScalingAgain	`XPRS_SCALING_ROW_SCALING_AGAIN`.
Maximum	`XPRS_SCALING_MAXIMUM`.
CurtisReid	`XPRS_SCALING_CURTIS_REID`.
ByMaxElemNotGeoMean	`XPRS_SCALING_BY_MAX_ELEM_NOT_GEO_MEAN`.
BigMScaling	`XPRS_SCALING_BIGM`.
SimplexObjectiveScaling	`XPRS_SCALING_SIMPLEX_OBJECTIVE_SCALING`.
IgnoreQuadraticRowPart	`XPRS_SCALING_IGNORE_QUADRATIC_ROW_PART`.
ScaleBeforePresolve	`XPRS_SCALING_BEFORE_PRESOLVE`.
NoScalingRowsUp	`XPRS_SCALING_NO_SCALING_ROWS_UP`.
NoScalingColumnsDown	`XPRS_SCALING_NO_SCALING_COLUMNS_DOWN`.
ObjectiveScaling	`XPRS_SCALING_DISABLE_GLOBAL_OBJECTIVE_SCALING`.
RhsScaling	`XPRS_SCALING_RHS_SCALING`.
NoAggressiveQScaling	`XPRS_SCALING_NO_AGGRESSIVE_Q_SCALING`.
SlackScaling	`XPRS_SCALING_SLACK_SCALING`.
Ruiz	`XPRS_SCALING_RUIZ`.
DogLeg	`XPRS_SCALING_DOGLEG`.
BeforeAfterPresolve	`XPRS_SCALING_BEFORE_AND_AFTER_PRESOLVE`.

SetType

enum struct xpress::SetType : char

strong

Enumeration for set types.

Since: 44.00; 44.00

SolInfo

enum class xpress::SolInfo : int

strong

SolInfo enumeration.

Enumerator
AbsPrimalInfeas	`XPRS_SOLINFO_ABSPRIMALINFEAS`.
RelPrimalInfeas	`XPRS_SOLINFO_RELPRIMALINFEAS`.
AbsDualInfeas	`XPRS_SOLINFO_ABSDUALINFEAS`.
RelDualInfeas	`XPRS_SOLINFO_RELDUALINFEAS`.
MaxMIPFractional	`XPRS_SOLINFO_MAXMIPFRACTIONAL`.
AbsMIPInfeas	`XPRS_SOLINFO_ABSMIPINFEAS`.
RelMIPInfeas	`XPRS_SOLINFO_RELMIPINFEAS`.

SolStatus

enum class xpress::SolStatus : int

strong

SolStatus enumeration.

Enumerator
NotFound	`XPRS_SOLSTATUS_NOTFOUND`.
Optimal	`XPRS_SOLSTATUS_OPTIMAL`.
Feasible	`XPRS_SOLSTATUS_FEASIBLE`.
Infeasible	`XPRS_SOLSTATUS_INFEASIBLE`.
Unbounded	`XPRS_SOLSTATUS_UNBOUNDED`.

SolveStatus

enum class xpress::SolveStatus : int

strong

SolveStatus enumeration.

Enumerator
Unstarted	`XPRS_SOLVESTATUS_UNSTARTED`.
Stopped	`XPRS_SOLVESTATUS_STOPPED`.
Failed	`XPRS_SOLVESTATUS_FAILED`.
Completed	`XPRS_SOLVESTATUS_COMPLETED`.

StopType

enum class xpress::StopType : int

strong

StopType enumeration.

Enumerator
None	`XPRS_STOP_NONE`.
TimeLimit	`XPRS_STOP_TIMELIMIT`.
CtrlC	`XPRS_STOP_CTRLC`.
NodeLimit	`XPRS_STOP_NODELIMIT`.
IterLimit	`XPRS_STOP_ITERLIMIT`.
MIPGap	`XPRS_STOP_MIPGAP`.
SolLimit	`XPRS_STOP_SOLLIMIT`.
GenericError	`XPRS_STOP_GENERICERROR`.
MemoryError	`XPRS_STOP_MEMORYERROR`.
User	`XPRS_STOP_USER`.
SolveComplete	`XPRS_STOP_SOLVECOMPLETE`.
LicenseLost	`XPRS_STOP_LICENSELOST`.
NumericalError	`XPRS_STOP_NUMERICALERROR`.

TreeDiagnostics

enum class xpress::TreeDiagnostics : int

strong

TreeDiagnostics enumeration.

Enumerator
MemoryUsageSummaries	`XPRS_TREEDIAGNOSTICS_MEMORY_USAGE_SUMMARIES`.
MemorySavedReports	`XPRS_TREEDIAGNOSTICS_MEMORY_SAVED_REPORTS`.

TunerHistory

enum class xpress::TunerHistory : int

strong

TunerHistory enumeration.

Enumerator
Ignore	`XPRS_TUNERHISTORY_IGNORE`.
Append	`XPRS_TUNERHISTORY_APPEND`.
Reuse	`XPRS_TUNERHISTORY_REUSE`.

TunerMethod

enum class xpress::TunerMethod : int

strong

TunerMethod enumeration.

Enumerator
Automatic	`XPRS_TUNERMETHOD_AUTOMATIC`.
LpQuick	`XPRS_TUNERMETHOD_LPQUICK`.
MipQuick	`XPRS_TUNERMETHOD_MIPQUICK`.
MipComprehensive	`XPRS_TUNERMETHOD_MIPCOMPREHENSIVE`.
MipRootFocus	`XPRS_TUNERMETHOD_MIPROOTFOCUS`.
MipTreeFocus	`XPRS_TUNERMETHOD_MIPTREEFOCUS`.
MipSimple	`XPRS_TUNERMETHOD_MIPSIMPLE`.
SlpQuick	`XPRS_TUNERMETHOD_SLPQUICK`.
MiSlpQuick	`XPRS_TUNERMETHOD_MISLPQUICK`.
MipHeuristics	`XPRS_TUNERMETHOD_MIPHEURISTICS`.
GlobalQuick	`XPRS_TUNERMETHOD_GLOBALQUICK`.
LpNumerics	`XPRS_TUNERMETHOD_LPNUMERICS`.

TunerMode

enum class xpress::TunerMode : int

strong

TunerMode enumeration.

Enumerator
Automatic	`XPRS_TUNERMODE_AUTOMATIC`.
Off	`XPRS_TUNERMODE_OFF`.
On	`XPRS_TUNERMODE_ON`.

TunerRootAlg

enum class xpress::TunerRootAlg : int

strong

TunerRootAlg enumeration.

Enumerator
Dual	`XPRS_TUNERROOTALG_DUAL`.
Primal	`XPRS_TUNERROOTALG_PRIMAL`.
Barrier	`XPRS_TUNERROOTALG_BARRIER`.
Network	`XPRS_TUNERROOTALG_NETWORK`.

TunerTarget

enum class xpress::TunerTarget : int

strong

TunerTarget enumeration.

Enumerator
Automatic	`XPRS_TUNERTARGET_AUTOMATIC`.
TimeGap	`XPRS_TUNERTARGET_TIMEGAP`.
TimeBound	`XPRS_TUNERTARGET_TIMEBOUND`.
TimeObjval	`XPRS_TUNERTARGET_TIMEOBJVAL`.
Integral	`XPRS_TUNERTARGET_INTEGRAL`.
SlpTime	`XPRS_TUNERTARGET_SLPTIME`.
SlpObjval	`XPRS_TUNERTARGET_SLPOBJVAL`.
SlpValidation	`XPRS_TUNERTARGET_SLPVALIDATION`.
Gap	`XPRS_TUNERTARGET_GAP`.
Bound	`XPRS_TUNERTARGET_BOUND`.
Objval	`XPRS_TUNERTARGET_OBJVAL`.
PrimalIntegral	`XPRS_TUNERTARGET_PRIMALINTEGRAL`.

UserSolStatus

enum class xpress::UserSolStatus : int

strong

UserSolStatus enumeration.

Enumerator
NotChecked	`XPRS_USERSOLSTATUS_NOT_CHECKED`.
AcceptedFeasible	`XPRS_USERSOLSTATUS_ACCEPTED_FEASIBLE`.
AcceptedOptimized	`XPRS_USERSOLSTATUS_ACCEPTED_OPTIMIZED`.
SearchedSol	`XPRS_USERSOLSTATUS_SEARCHED_SOL`.
SearchedNoSol	`XPRS_USERSOLSTATUS_SEARCHED_NOSOL`.
RejectedInfeasNoSearch	`XPRS_USERSOLSTATUS_REJECTED_INFEAS_NOSEARCH`.
RejectedPartialNoSearch	`XPRS_USERSOLSTATUS_REJECTED_PARTIAL_NOSEARCH`.
RejectedFailedOptimize	`XPRS_USERSOLSTATUS_REJECTED_FAILED_OPTIMIZE`.
Dropped	`XPRS_USERSOLSTATUS_DROPPED`.
RejectedCutoff	`XPRS_USERSOLSTATUS_REJECTED_CUTOFF`.

VariableSelection

enum class xpress::VariableSelection : int

strong

VariableSelection enumeration.

Enumerator
Automatic	`XPRS_VARSELECTION_AUTOMATIC`.
MinimumUpDownPseudoCosts	`XPRS_VARSELECTION_MIN_UPDOWN_PSEUDO_COSTS`.
SumupDownPseudoCosts	`XPRS_VARSELECTION_SUM_UPDOWN_PSEUDO_COSTS`.
MaximumUpDownPseudoCostsPlusTwiceMinimum	`XPRS_VARSELECTION_MAX_UPDOWN_PSEUDO_COSTS_PLUS_TWICE_MIN`.
MaximumUpDownPseudoCosts	`XPRS_VARSELECTION_MAX_UPDOWN_PSEUDO_COSTS`.
DownPseudoCost	`XPRS_VARSELECTION_DOWN_PSEUDO_COST`.
UpPseudoCost	`XPRS_VARSELECTION_UP_PSEUDO_COST`.

Function Documentation

format()

template<typename... T>

auto xpress::format	(	std::string const &	format,
		T...	args ) -> std::string

Formatted printing to a string.

Creates a string based on the printf-like formatting string format and the subsequent arguments.

Note: If you have C++20 available consider using std::format instead.

Parameters

format	The format string.
args	Arguments for `format`.

Returns: The string described by format and subsequent arguments.

makeArray()

template<typename T , typename... D>

auto xpress::makeArray ( D... dims ) -> typename MakeArray<T,sizeof...(D)>::array_type

Create a D-dimensional array with values of type T.

The dimensions of the array to be created are given by the argument in dims.

sizeHint()

template<typename T , typename std::enable_if< has_size< T >::value, bool >::type = true>

auto xpress::sizeHint ( T const & t ) -> int

Get the number of elements in t.

Always returns -1 (number of elements in t is unknown).

It is assumed that t.size() gives the number of elements in t.

Parameters

t	The object for which to query the number of elements.

Returns: t.size().; Always returns -1;

© 2001-2025 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.

Contents

Index

Glossary

Search Results

xpress

Namespaces

Classes

Enumerations

Functions

Detailed Description

Enumeration Type Documentation

AllowCompute

AlwaysNeverAutomatic

BacktrackAlg

BARHGOps

BarOrder

BarPresolveOps

BranchChoice

CholeskyAlgorithm

Clamping

ColumnType

ComputeLog

CrossoverDynamicReduction

CutSelect

CutStrategy

DefaultAlg

DualGradient

DualizeOps

DualStrategy

FeasibilityPump

GenConsType

Globalboundingbox

GlobalLSHEURStrategy

HeuristicSearchSelect

HeuristicStrategy

IISOps

IISSolStatus

LPFlags

LPStatus

MipPresolve

MipRestart

MIPStatus

MultiObjOps

Namespaces

NodeSelectionCriteria

ObjControl

ObjSense

OnOff

OptimizeType

OutputDetail

ParameterType

PreProbing

Presolve

PresolveCoefElim

PresolveDomColumn

PresolveDomRow

PresolveOperations

PresolveState

Pricing

PrimalUnshift

QConvexity

RefineOps

RepairIndefiniteQuadratic

RowFlag

RowType

Scaling

SetType

SolInfo

SolStatus

SolveStatus

StopType

TreeDiagnostics

TunerHistory

TunerMethod

TunerMode

TunerRootAlg

TunerTarget

UserSolStatus

VariableSelection

Function Documentation