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XPRBloadmat

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Purpose

Load the problem into the Xpress-Optimizer.

Synopsis

int XPRBloadmat(XPRBprob prob);

Argument

prob	Reference to a problem.

Return value

0 if function executed successfully, 1 otherwise.

Example

Here the matrix is generated for problem expl2.

XPRBprob expl2;
expl2 = XPRBnewprob("example2");
   ...
XPRBloadmat(expl2);

Further information

This function calls the Optimizer library functions XPRSloadlp, XPRSloadqp, XPRSloadglobal, or XPRSloadqglobal to transform the current BCL problem definition into a matrix in the Xpress-Optimizer. Empty rows and columns are deleted before generating the matrix. Semi-continuous (integer) variables are preprocessed: if a lower bound value greater than 0 is given, then the variable is treated like a continuous (resp. integer) variable. Variables that belong to the problem but do not appear in the matrix receive negative column numbers. Usually, it is not necessary to call this function explicitly because BCL automatically does this conversion whenever it is required. To force matrix reloading, a call to this function needs to be preceded by a call to XPRBsync with the flag XPRB_XPRS_PROB.

Related topics

XPRBsync, XPRBgetXPRSprob, Appendix Using BCL with the Optimizer library.

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