1/* Get resolution of a time base.
2 Copyright (C) 2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <time.h>
20
21/* Set TS to resolution of time base BASE. */
22int
23__timespec_getres64 (struct __timespec64 *ts, int base)
24{
25 if (base == TIME_UTC)
26 {
27 __clock_getres64 (CLOCK_REALTIME, ts);
28 return base;
29 }
30 return 0;
31}
32
33#if __TIMESIZE != 64
34libc_hidden_def (__timespec_getres64)
35
36int
37__timespec_getres (struct timespec *ts, int base)
38{
39 int ret;
40 struct __timespec64 tp64;
41
42 ret = __timespec_getres64 (&tp64, base);
43
44 if (ret == TIME_UTC && ts != NULL)
45 *ts = valid_timespec64_to_timespec (tp64);
46
47 return ret;
48}
49#endif
50strong_alias (__timespec_getres, timespec_getres);
51