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. */ 22 int __timespec_getres64(struct __timespec64 * ts,int base)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 libc_hidden_def(__timespec_getres64)34libc_hidden_def (__timespec_getres64) 35 36 int 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 50 strong_alias (__timespec_getres, timespec_getres); 51