source: glpk-cmake/src/amd/amd_control.c @ 1:c445c931472f

/* ========================================================================= */
/* === AMD_control ========================================================= */
/* ========================================================================= */

/* ------------------------------------------------------------------------- */
/* AMD, Copyright (c) Timothy A. Davis,                                      */
/* Patrick R. Amestoy, and Iain S. Duff.  See ../README.txt for License.     */
/* email: davis at cise.ufl.edu    CISE Department, Univ. of Florida.        */
/* web: http://www.cise.ufl.edu/research/sparse/amd                          */
/* ------------------------------------------------------------------------- */

/* User-callable.  Prints the control parameters for AMD.  See amd.h
 * for details.  If the Control array is not present, the defaults are
 * printed instead.
 */

#include "amd_internal.h"

GLOBAL void AMD_control
(
    double Control [ ]
)
{
    double alpha ;
    Int aggressive ;

    if (Control != (double *) NULL)
    {
        alpha = Control [AMD_DENSE] ;
        aggressive = Control [AMD_AGGRESSIVE] != 0 ;
    }
    else
    {
        alpha = AMD_DEFAULT_DENSE ;
        aggressive = AMD_DEFAULT_AGGRESSIVE ;
    }

    PRINTF (("\nAMD version %d.%d.%d, %s: approximate minimum degree ordering\n"
        "    dense row parameter: %g\n", AMD_MAIN_VERSION, AMD_SUB_VERSION,
        AMD_SUBSUB_VERSION, AMD_DATE, alpha)) ;

    if (alpha < 0)
    {
        PRINTF (("    no rows treated as dense\n")) ;
    }
    else
    {
        PRINTF ((
        "    (rows with more than max (%g * sqrt (n), 16) entries are\n"
        "    considered \"dense\", and placed last in output permutation)\n",
        alpha)) ;
    }

    if (aggressive)
    {
        PRINTF (("    aggressive absorption:  yes\n")) ;
    }
    else
    {
        PRINTF (("    aggressive absorption:  no\n")) ;
    }

    PRINTF (("    size of AMD integer: %d\n\n", sizeof (Int))) ;
}