examples/doitgen/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     int k;
  14
  15     for (i=0; i<N; i++) {
  16         for (j=0; j<N; j++) {
  17             C4[i][j] = (i*i+j*j)/((double)N*N);
  18             for (k=0; k<N; k++) {
  19                 A[i][j][k] = (i*i+j*j + k)/((double)N*N);
  20             }
  21         }
  22     }
  23 }
  24
  25
  26 void print_array()
  27 {
  28     int i, j, k;
  29
  30     for (i=0; i<N; i++) {
  31         for (j=0; j<N; j++) {
  32             for (k=0; k<N; k++) {
  33                 fprintf(stdout, "%0.2lf ", A[i][j][k]);
  34                 if (j%80 == 20) fprintf(stdout, "\n");
  35             }
  36         }
  37     }
  38     fprintf(stdout, "\n");
  39 }
  40
  41 double rtclock()
  42 {
  43     struct timezone Tzp;
  44     struct timeval Tp;
  45     int stat;
  46     stat = gettimeofday (&Tp, &Tzp);
  47     if (stat != 0) printf("Error return from gettimeofday: %d",stat);
  48     return(Tp.tv_sec + Tp.tv_usec*1.0e-6);
  49 }