COIN-OR::LEMON - Graph Library

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

Last change on this file since 1:c445c931472f was 1:c445c931472f, checked in by Alpar Juttner <alpar@…>, 10 years ago

Import glpk-4.45

  • Generated files and doc/notes are removed
File size: 1.9 KB
Line 
1/* ========================================================================= */
2/* === AMD_control ========================================================= */
3/* ========================================================================= */
4
5/* ------------------------------------------------------------------------- */
6/* AMD, Copyright (c) Timothy A. Davis,                                      */
7/* Patrick R. Amestoy, and Iain S. Duff.  See ../README.txt for License.     */
8/* email: davis at cise.ufl.edu    CISE Department, Univ. of Florida.        */
9/* web: http://www.cise.ufl.edu/research/sparse/amd                          */
10/* ------------------------------------------------------------------------- */
11
12/* User-callable.  Prints the control parameters for AMD.  See amd.h
13 * for details.  If the Control array is not present, the defaults are
14 * printed instead.
15 */
16
17#include "amd_internal.h"
18
19GLOBAL void AMD_control
20(
21    double Control [ ]
22)
23{
24    double alpha ;
25    Int aggressive ;
26
27    if (Control != (double *) NULL)
28    {
29        alpha = Control [AMD_DENSE] ;
30        aggressive = Control [AMD_AGGRESSIVE] != 0 ;
31    }
32    else
33    {
34        alpha = AMD_DEFAULT_DENSE ;
35        aggressive = AMD_DEFAULT_AGGRESSIVE ;
36    }
37
38    PRINTF (("\nAMD version %d.%d.%d, %s: approximate minimum degree ordering\n"
39        "    dense row parameter: %g\n", AMD_MAIN_VERSION, AMD_SUB_VERSION,
40        AMD_SUBSUB_VERSION, AMD_DATE, alpha)) ;
41
42    if (alpha < 0)
43    {
44        PRINTF (("    no rows treated as dense\n")) ;
45    }
46    else
47    {
48        PRINTF ((
49        "    (rows with more than max (%g * sqrt (n), 16) entries are\n"
50        "    considered \"dense\", and placed last in output permutation)\n",
51        alpha)) ;
52    }
53
54    if (aggressive)
55    {
56        PRINTF (("    aggressive absorption:  yes\n")) ;
57    }
58    else
59    {
60        PRINTF (("    aggressive absorption:  no\n")) ;
61    }
62
63    PRINTF (("    size of AMD integer: %d\n\n", sizeof (Int))) ;
64}
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