glibc/time/timespec_getres.c

/* Get resolution of a time base.
   Copyright (C) 2021-2022 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <time.h>


/* Set TS to resolution of time base BASE.  */
int
timespec_getres (struct timespec *ts, int base)
{
  if (base == TIME_UTC)
    {
      __clock_getres (CLOCK_REALTIME, ts);
      return base;
    }
  return 0;
}