main (void) { struct timeval t_m = {0, 0}; struct timezone t_z = {0, 0}; struct timeval t_m1 = {0, 0}; int i; if (gettimeofday (&t_m, &t_z) != 0) err ("gettimeofday"); for (i = 1; i < 10000; i++) if (gettimeofday (&t_m1, NULL) != 0) err ("gettimeofday 1"); else if (t_m1.tv_sec * 1000000 + t_m1.tv_usec != (t_m.tv_sec * 1000000 + t_m.tv_usec + i * 1000)) { fprintf (stderr, "t0 (%ld, %ld), i %d, t1 (%ld, %ld)\n", t_m.tv_sec, t_m.tv_usec, i, t_m1.tv_sec, t_m1.tv_usec); abort (); } if (time (NULL) != t_m1.tv_sec) { fprintf (stderr, "time != gettod\n"); abort (); } printf ("pass\n"); exit (0); }