test_clock_resolution.cpp

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#include <time.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
  struct timespec nano_time;
  clock_getres(CLOCK_REALTIME, &nano_time);
  printf("clock resolution = %ld secs and %ld nsecs\n",
         nano_time.tv_sec, nano_time.tv_nsec);
}