XPRSgetredcosts
Purpose
Used to obtain the reduced costs associated with the incumbent solution during or after optimization of a continuous problem with
XPRSoptimize,
XPRSlpoptimize or
XPRSnlpoptimize.
Synopsis
int XPRS_CC XPRSgetredcosts(XPRSprob prob, int *status, double djs[], int first, int last);
Arguments
|
prob
|
The current problem.
|
|
status
|
Information about the reduced costs returned.
|
|
djs
|
Double pointer where the reduced costs for the variables will be returned. May be NULL if not required.
|
|
first
|
First column in the reduced costs.
|
|
last
|
Last column in the reduced costs.
|
Further information
1. The function always returns data in the input space, even if the problem is currently in presolved state. Column indices should be in the range 0 to
INPUTCOLS-
1.
2. The
status can take the same values as
SOLSTATUS. Reduced costs are available when the problem is solved with SLP, Knitro or any LP or convex QP algorithm: the
status returned will be the same as for
XPRSgetsolution. Reduced costs are not available during or after MIP or global solves:
status will be
XPRS_SOLSTATUS_NOTFOUND.
Related topics
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