XPRSgetpresolvebasis
XPRSgetpresolvebasis |
Purpose
Returns the current
basis from memory into the user's data areas. If the problem is presolved, the presolved basis will be returned. Otherwise the original basis will be returned.
Synopsis
int XPRS_CC XPRSgetpresolvebasis(XPRSprob prob, int rstatus[], int cstatus[]);
Arguments
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prob
|
The current problem.
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rstatus
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Integer array of length
ROWS to the basis status of the stack, surplus or artificial variable associated with each row. The status will be one of:
May be
NULL if not required.
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cstatus
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Integer array of length
COLS to hold the basis status of the columns in the constraint matrix. The status will be one of:
May be
NULL if not required.
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Example
The following obtains and outputs basis information on a presolved problem prior to the global search:
XPRSprob prob;
int i, cols, *cstatus;
...
XPRSreadprob(prob,"myglobalprob","");
XPRSmipoptimize(prob,"l");
XPRSgetintattrib(prob,XPRS_COLS,&cols);
cstatus = malloc(cols*sizeof(int));
XPRSgetpresolvebasis(prob,NULL,cstatus);
for(i=0;i<cols;i++)
printf("Column %d: %d\n", i, cstatus[i]);
XPRSmipoptimize(prob);
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