randomtest.c

   1 #include <assert.h>
   2 #include <unistd.h>
   3 #include <barvinok/util.h>
   4 #include <barvinok/barvinok.h>
   5
   6 #ifdef HAVE_SYS_TIMES_H
   7
   8 #include <sys/times.h>
   9
  10 static void time_diff(struct tms *before, struct tms *after)
  11 {
  12     long ticks = sysconf(_SC_CLK_TCK);
  13     printf("User: %g; Sys: %g\n",
  14             (0.0 + after->tms_utime - before->tms_utime) / ticks,
  15             (0.0 + after->tms_stime - before->tms_stime) / ticks);
  16 }
  17
  18 #else
  19
  20 struct tms { int dummy; };
  21 static void times(struct tms* time)
  22 {
  23 }
  24 static void time_diff(struct tms *before, struct tms *after)
  25 {
  26 }
  27
  28 #endif
  29
  30 int main()
  31 {
  32     static const int size = 1000;
  33     static const int loop = 10;
  34     int i, d, r, c;
  35     Matrix *M;
  36     Polyhedron *P;
  37     Value cm, cb;
  38     struct tms tms_before, tms_between, tms_after;
  39     value_init(cm);
  40     value_init(cb);
  41
  42     for (d = 2; d < 10; ++d) {
  43         M = Matrix_Alloc(2*d, 2+d);
  44         for (r = 0; r < 2*d; ++r)
  45             value_set_si(M->p[r][0], 1);
  46         for (i = 0; i < loop; ++i) {
  47             for (r = 0; r < 2*d; ++r) {
  48                 for (c = 1; c < 1+d; ++c) {
  49                     value_set_si(M->p[r][c], random_int(size));
  50                 }
  51                 value_set_si(M->p[r][d+1], random_int(2)+1);
  52             }
  53             P = Rays2Polyhedron(M, 2*d);
  54             Polyhedron_Print(stdout, P_VALUE_FMT, P);
  55             times(&tms_before);
  56             manual_count(P, &cm);
  57             times(&tms_between);
  58             barvinok_count(P, &cb, 100);
  59             times(&tms_after);
  60             printf("manual: ");
  61             value_print(stdout, P_VALUE_FMT, cm);
  62             puts("");
  63             time_diff(&tms_before, &tms_between);
  64             printf("Barvinok: ");
  65             value_print(stdout, P_VALUE_FMT, cb);
  66             puts("");
  67             time_diff(&tms_between, &tms_after);
  68             assert(value_eq(cm, cb));
  69         }
  70         Matrix_Free(M);
  71     }
  72     value_clear(cm);
  73     value_clear(cb);
  74     return 0;
  75 }