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XPRSgetlastbarsol

Purpose
Used to obtain the last barrier solution values following optimization that used the barrier solver.
Topic areas
Solution, Barrier
Synopsis
int XPRS_CC XPRSgetlastbarsol(XPRSprob prob, double x[], double slack[], double duals[], double djs[], int *p_status);
Arguments
prob 
The current problem.
x 
Double array of length ORIGINALCOLS where the values of the primal variables will be returned. May be NULL if not required.
slack 
Double array of length ORIGINALROWS where the values of the slack variables will be returned. May be NULL if not required.
duals 
Double array of length ORIGINALROWS where the values of the dual variables ( cBTB-1) will be returned. May be NULL if not required.
djs 
Double array of length ORIGINALCOLS where the reduced cost for each variable ( cT-cBTB-1A) will be returned. May be NULL if not required.
p_status 
Status of the last barrier solve. Value matches that of XPRS_LPSTATUS should the solve have been stopped immediately after the barrier.
Further information
1. If the barrier solver has not been used, p_status will return XPRS_LP_UNSOLVED.
2. The barrier solution or the solution candidate is always available if the status is not XPRS_LP_UNSOLVED.
3. The last barrier solution is available until the next solve, and is not invalidated by otherwise working with the problem.
Related topics
XPRSgetsolution, XPRSgetcallbacksolution.

Parent Topic Console and Library Functions

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