Initializing help system before first use

XPRSgetslacks

Purpose
Returns the slack values from the incumbent solution during or after optimization with XPRSoptimize, XPRSmipoptimize, XPRSlpoptimize or XPRSnlpoptimize.
Topic areas
Solution, LP
Synopsis
int XPRS_CC XPRSgetslacks(XPRSprob prob, int *status, double slacks[], int first, int last);
Arguments
prob 
The current problem.
status 
Information about the slacks returned.
slacks 
Double array of length last-first+1 where the value of the slack variables will be returned. May be NULL if not required.
first 
First row in the slacks.
last 
Last row in the slacks.
Example
See also examples repair.c, tableau.c.
Further information
1. The function always returns data in the input space, even if the problem is currently in presolved state. Row indices should be in the range 0 to INPUTROWS- 1.
2. The status will be set to XPRS_SOLAVAILABLE_NOTFOUND ( 0), XPRS_SOLAVAILABLE_OPTIMAL ( 1), or XPRS_SOLAVAILABLE_FEASIBLE ( 2).
3. During a deterministic MIP solve, the incumbent solution is only available once it has been deterministically communicated to the current MIP worker problem.
Related topics
XPRSoptimize, XPRSgetduals, XPRSgetsolution, XPRSgetredcosts.

Parent Topic Console and Library Functions

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