src/libstddjb/timespec_from_tai_relative.c


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/* ISC license. */

#include <sys/types.h>
#include <time.h>
#include <errno.h>
#include <skalibs/sysdeps.h>
#include <skalibs/uint64.h>
#include <skalibs/tai.h>

int timespec_from_tai_relative (struct timespec *ts, tai_t const *t)
{
  if (tai_sec(t) >= (uint64)1 << 63) return (errno = EINVAL, 0) ;
#if SKALIBS_SIZEOFTIME < 8
  if (tai_sec(t) > 0xffffffffU) return (errno = ERANGE, 0) ;
#endif
  ts->tv_sec = (time_t)tai_sec(t) ;
  ts->tv_nsec = 0 ;
  return 1 ;
}