1 /* A crash few tests for the maxmin library */
3 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
16 #include "surf/maxmin.h"
17 #include "xbt/xbt_os_time.h"
18 #include "xbt/sysdep.h" /* time manipulation for benchmarking */
22 double float_random(double max);
23 double float_random(double max)
25 return ((max * rand()) / (RAND_MAX + 1.0));
28 int int_random(int max);
29 int int_random(int max)
31 return (int) (((max * 1.0) * rand()) / (RAND_MAX + 1.0));
34 void test(int nb_cnst, int nb_var, int nb_elem);
35 void test(int nb_cnst, int nb_var, int nb_elem)
37 lmm_system_t Sys = NULL;
38 lmm_constraint_t *cnst = xbt_new0(lmm_constraint_t, nb_cnst);
39 lmm_variable_t *var = xbt_new0(lmm_variable_t, nb_var);
40 int *used = xbt_new0(int, nb_cnst);
43 Sys = lmm_system_new(1);
45 for (i = 0; i < nb_cnst; i++) {
46 cnst[i] = lmm_constraint_new(Sys, NULL, float_random(10.0));
49 for (i = 0; i < nb_var; i++) {
50 var[i] = lmm_variable_new(Sys, NULL, 1.0, -1.0, nb_elem);
51 for (j = 0; j < nb_cnst; j++)
53 for (j = 0; j < nb_elem; j++) {
54 k = int_random(nb_cnst);
59 lmm_expand(Sys, cnst[k], var[i], float_random(1.0));
64 printf("Starting to solve\n");
65 date = xbt_os_time() * 1000000;
67 date = xbt_os_time() * 1000000 - date;
69 for (i = 0; i < nb_var; i++)
70 lmm_variable_free(Sys, var[i]);
82 int main(int argc, char **argv)
87 date = xbt_os_time() * 1000000;
88 test(nb_cnst, nb_var, nb_elem);
89 printf("One shot execution time for a total of %d constraints, "
90 "%d variables with %d active constraint each : %g microsecondes \n",
91 nb_cnst, nb_var, nb_elem, date);