diff options
Diffstat (limited to 'glpk-5.0/src/amd/amd_control.c')
-rw-r--r-- | glpk-5.0/src/amd/amd_control.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/glpk-5.0/src/amd/amd_control.c b/glpk-5.0/src/amd/amd_control.c new file mode 100644 index 0000000..f4d4f0d --- /dev/null +++ b/glpk-5.0/src/amd/amd_control.c @@ -0,0 +1,64 @@ +/* ========================================================================= */ +/* === 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))) ; +} |