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XSLPgetslpsol

XSLPgetslpsol

Purpose
Obtain the solution values for the most recent SLP iteration
Synopsis
int XPRS_CC XSLPgetslpsol(XSLPprob Prob, double *x, double *slack, double *dual, double *dj);
Arguments
Prob 
The current SLP problem.
x 
Double array of length XSLP_ORIGINALCOLS to hold the values of the primal variables. May be NULL if not required.
slack 
Double array of length XSLP_ORIGINALROWS to hold the values of the slack variables. May be NULL if not required.
dual 
Double array of length XSLP_ORIGINALROWS to hold the values of the dual variables. May be NULL if not required.
dj 
Double array of length XSLP_ORIGINALCOLS to hold the recuded costs of the primal variables. May be NULL if not required.
Example
The following code fragment recovers the values and reduced costs of the primal variables from the most recent SLP iteration: 
XSLPprob prob;
int nCol;
double *val, *dj;
XSLPgetintattrib(prob,XSLP_ORIGINALCOLS,&nCol);
val = malloc(nCol*sizeof(double));
dj = malloc(nCol*sizeof(double));
XSLPgetslpsol(prob,val,NULL,NULL,dj);
Further information
XSLPgetslpsol can be called at any time after an SLP iteration has completed, and will return the same values even if the problem is subsequently changed. XSLPgetslpsol returns values for the columns and rows originally in the problem and not for any augmentation rows or columns. To access the values of any augmentation columns or rows, use XPRSgetlpsol; accessing the augmented solution is only recommended if XSLP_PRESOLVELEVEL indicates that the problem dimensions should not be changed in presolve.

Parent Topic Library functions

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