lemon-project-template-glpk
diff deps/glpk/src/amd/amd_control.c @ 9:33de93886c88
Import GLPK 4.47
author | Alpar Juttner <alpar@cs.elte.hu> |
---|---|
date | Sun, 06 Nov 2011 20:59:10 +0100 |
parents | |
children |
line diff
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/deps/glpk/src/amd/amd_control.c Sun Nov 06 20:59:10 2011 +0100 1.3 @@ -0,0 +1,64 @@ 1.4 +/* ========================================================================= */ 1.5 +/* === AMD_control ========================================================= */ 1.6 +/* ========================================================================= */ 1.7 + 1.8 +/* ------------------------------------------------------------------------- */ 1.9 +/* AMD, Copyright (c) Timothy A. Davis, */ 1.10 +/* Patrick R. Amestoy, and Iain S. Duff. See ../README.txt for License. */ 1.11 +/* email: davis at cise.ufl.edu CISE Department, Univ. of Florida. */ 1.12 +/* web: http://www.cise.ufl.edu/research/sparse/amd */ 1.13 +/* ------------------------------------------------------------------------- */ 1.14 + 1.15 +/* User-callable. Prints the control parameters for AMD. See amd.h 1.16 + * for details. If the Control array is not present, the defaults are 1.17 + * printed instead. 1.18 + */ 1.19 + 1.20 +#include "amd_internal.h" 1.21 + 1.22 +GLOBAL void AMD_control 1.23 +( 1.24 + double Control [ ] 1.25 +) 1.26 +{ 1.27 + double alpha ; 1.28 + Int aggressive ; 1.29 + 1.30 + if (Control != (double *) NULL) 1.31 + { 1.32 + alpha = Control [AMD_DENSE] ; 1.33 + aggressive = Control [AMD_AGGRESSIVE] != 0 ; 1.34 + } 1.35 + else 1.36 + { 1.37 + alpha = AMD_DEFAULT_DENSE ; 1.38 + aggressive = AMD_DEFAULT_AGGRESSIVE ; 1.39 + } 1.40 + 1.41 + PRINTF (("\nAMD version %d.%d.%d, %s: approximate minimum degree ordering\n" 1.42 + " dense row parameter: %g\n", AMD_MAIN_VERSION, AMD_SUB_VERSION, 1.43 + AMD_SUBSUB_VERSION, AMD_DATE, alpha)) ; 1.44 + 1.45 + if (alpha < 0) 1.46 + { 1.47 + PRINTF ((" no rows treated as dense\n")) ; 1.48 + } 1.49 + else 1.50 + { 1.51 + PRINTF (( 1.52 + " (rows with more than max (%g * sqrt (n), 16) entries are\n" 1.53 + " considered \"dense\", and placed last in output permutation)\n", 1.54 + alpha)) ; 1.55 + } 1.56 + 1.57 + if (aggressive) 1.58 + { 1.59 + PRINTF ((" aggressive absorption: yes\n")) ; 1.60 + } 1.61 + else 1.62 + { 1.63 + PRINTF ((" aggressive absorption: no\n")) ; 1.64 + } 1.65 + 1.66 + PRINTF ((" size of AMD integer: %d\n\n", sizeof (Int))) ; 1.67 +}