XPRSgetslacks
Purpose
Used to obtain the slack values following optimization with
XPRSoptimize.
Synopsis
int XPRS_CC XPRSgetslacks(XPRSprob prob, int *status, double slacks[], int first, int last);
Arguments
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prob
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The current problem.
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status
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Information about the slacks returned.
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slacks
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Double pointer where the value of the slack variables will be returned. May be NULL if not required.
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first
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First row in the slacks.
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last
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Last row in the slacks.
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Example
The following brings the 7th variable into the basis and removes the 5th:
int nrows; int nsparerows; XPRSgetintattrib(prob,XPRS_ROWS,&nrows); XPRSgetintattrib(prob,XPRS_SPAREROWS,&nsparerows); XPRSpivot(prob,nrows + nsparerows + 6,nrows + nsparerows + 4)
Further information
1. The function always returns data in the original space, even if the problem is currently in presolved state.
3. Can also be used after calling
XPRSlpoptimize and
XPRSmipoptimize however is it best practice to access the relevant solutions by
XPRSgetlpsol and
XPRSgetmipsol when a specific problem type has been optimized.
Related topics
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