XPRSloadsecurevecs
Purpose
Allows the user to mark rows and columns in order to prevent the
presolve removing these rows and columns from the matrix.
Synopsis
int XPRS_CC XPRSloadsecurevecs(XPRSprob prob, int nrows, int ncols, const int rowind[], const int colind[]);
Arguments
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prob
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The current problem.
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nrows
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Number of rows to be marked.
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ncols
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Number of columns to be marked.
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rowind
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Integer array of length
nrows containing the rows to be marked. May be
NULL if not required.
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colind
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Integer array of length
ncols containing the columns to be marked. May be
NULL if not required.
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Example
This sets the first six rows and the first four columns to not be removed during presolve.
int rowind[] = {0,1,2,3,4,5};
int colind[] = {0,1,2,3};
...
XPRSreadprob(prob,"myprob","");
XPRSloadsecurevecs(prob,6,4,rowind,colind);
XPRSmipoptimize(prob,"");
Further information
This function cannot be called while the current problem is being solved or when it is in an interrupted state. Use XPRSpostsolve to restore the problem to a non-solving state.
Related topics
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