get_nonzeros

Returns the number of non-zero elements in the matrix.

int get_nonzeros(lprec *lp);

Return Value

get_nonzeros returns the number of non-zero elements in the matrix.

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_nonzeros function returns the number of non-zeros in the matrix.

Example

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

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

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

  nonzeros = get_nonzeros(lp); /* Will return 0 */

  delete_lp(lp);
  return(0);
}

lp_solve API reference