QSopt QSdelete_rows QSopt > Callable Library > Function List
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Purpose
Delete a set of rows from the problem.
Synopsis
int QSdelete_rows (QSprob p, int num, int *dellist)
Arguments
p a handle to an initialized problem.
num the number of rows to be deleted.
dellist an array of length num specifying the indices of the rows to be deleted.
Returns
A zero value if the function terminated correctly, and a non-zero value if an error occurred.
Description

Use this function to delete a set of constraints from an existing LP problem, specifying the constraints as a list of indices. (Note that the constraints are numbered from 0 up to nrows-1, where nrows is the number of rows in the problem.)

Example
/* Assume p is an initialized LP problem with at least 4 rows.  */
/* Use QSdelete_rows() to remove rows 1 and 3.                  */

int rval;
int dellist[2] = { 1, 3 };

rval = QSdelete_rows (p, 2, dellist);
if (rval) {
    fprintf (stderr,
             "QSdelete_rows failed with return code %d\n", rval);
}
 
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Last Updated: November 2003