set_simplextype

Sets the desired combination of primal and dual simplex algorithms.

void set_simplextype(lprec *lp, int simplextype);

Return Value

set_simplextype has no return value.

Parameters

lp

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

simplextype

The desired combination of primal and dual simplex algorithms. Can by any of the following values:

SIMPLEX_PRIMAL_PRIMAL (5) Phase1 Primal, Phase2 Primal
SIMPLEX_DUAL_PRIMAL (6) Phase1 Dual, Phase2 Primal
SIMPLEX_PRIMAL_DUAL (9) Phase1 Primal, Phase2 Dual
SIMPLEX_DUAL_DUAL (10) Phase1 Dual, Phase2 Dual

Remarks

The set_simplextype function sets the desired combination of primal and dual simplex algorithms. The default is SIMPLEX_DUAL_PRIMAL (6).

Example

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

int main(void)
{
  lprec *lp;

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

  set_simplextype(lp, SIMPLEX_PRIMAL_DUAL);

  delete_lp(lp);
  return(0);
}

lp_solve API reference

See Also make_lp, copy_lp, read_lp, read_LP, read_mps, read_freemps, read_MPS, read_freeMPS, read_XLI, get_simplextype, set_preferdual