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XPRSloadsecurevecs

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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 nr, int nc, int mrow[], int mcol[]);

Arguments

prob	The current problem.
nr	Number of rows to be marked.
nc	Number of columns to be marked.
mrow	Integer array of length nr containing the rows to be marked. May be NULL if not required.
mcol	Integer array of length nc containing the columns to be marked. May be NULL if not required.

Example

This sets the first six rows and the first four columns to not be removed during presolve.

int mrow[] = {0,1,2,3,4,5};
int mcol[] = {0,1,2,3};
...
XPRSreadprob(prob,"myprob","");
XPRSloadsecurevecs(prob,6,4,mrow,mcol);
XPRSminim(prob,"");

Related topics

Working with Presolve.

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