get_presolveloops

Returns the number of times presolve is done.

int get_presolveloops(lprec *lp);

Return Value

get_presolveloops returns the number of times presolve is done.

Parameters

Pointer to previously created lp model. See return value of make_lp, copy_lp, read_lp, read_LP, read_mps, read_freemps, read_MPS, read_freeMPS, read_XLI

Remarks

The get_presolveloops function returns the number of times presolve is done. After a presolve is done, another presolve can again result in elimination of extra rows and/or columns. This number specifies the maximum number of times this process is repeated. By default this is until presolve has nothing to do anymore.

Example

#include <stdio.h>
#include <stdlib.h>
#include "lp_lib.h"

int main(void)
{
  lprec *lp;
  int presolveloops;

  /* Create a new LP model */
  lp = make_lp(0, 0);
  if(lp == NULL) {
    fprintf(stderr, "Unable to create new LP model\n");
    return(1);
  }

  presolveloops = get_presolveloops(lp);

  delete_lp(lp);
  return(0);
}

lp_solve API reference