examples/seidel/util.h

   1 #include <unistd.h>
   2 #include <sys/time.h>
   3
   4 #ifdef TIME
   5 #define IF_TIME(foo) foo;
   6 #else
   7 #define IF_TIME(foo)
   8 #endif
   9
  10 void init_array()
  11 {
  12     int i, j;
  13
  14     for (i=0; i<N; i++) {
  15         for (j=0; j<N; j++) {
  16             a[i][j] = i*i+j*j;
  17         }
  18     }
  19 }
  20
  21
  22 void print_array()
  23 {
  24     int i, j;
  25
  26     for (i=0; i<N; i++) {
  27         for (j=0; j<N; j++) {
  28             fprintf(stdout, "%0.2lf ", a[i][j]);
  29             if (j%80 == 20) fprintf(stdout, "\n");
  30         }
  31     }
  32     fprintf(stdout, "\n");
  33 }
  34
  35 double rtclock()
  36 {
  37     struct timezone Tzp;
  38     struct timeval Tp;
  39     int stat;
  40     stat = gettimeofday (&Tp, &Tzp);
  41     if (stat != 0) printf("Error return from gettimeofday: %d",stat);
  42     return(Tp.tv_sec + Tp.tv_usec*1.0e-6);
  43 }