#include "time_util.h"

#define NANO 1000000000


struct timespec TimeUtil::calc_abs_time(const struct timespec *ts) {
 
	struct timespec res;
  struct timespec cur;
  if (clock_gettime(CLOCK_REALTIME, &cur) == -1)
      err_exit(errno, "clock_gettime");

  res.tv_sec = cur.tv_sec + ts->tv_sec;
  res.tv_nsec = cur.tv_nsec + ts->tv_nsec;
  res.tv_sec = res.tv_sec + floor(res.tv_nsec / NANO);
  res.tv_nsec = res.tv_nsec % NANO;
  return res;
}

struct timespec TimeUtil::trim_time(const struct timespec *ts) {
 
	struct timespec res;
  res.tv_sec = ts->tv_sec + floor(ts->tv_nsec / NANO);
  res.tv_nsec = ts->tv_nsec % NANO;
  return res;
}