libio: Sort test variables in Makefile
[glibc.git] / time / clock.c
blob34bf8d8605272900d2075c47786a09871e25b84b
1 /* Copyright (C) 1991-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
18 #include <sys/times.h>
19 #include <time.h>
20 #include <errno.h>
22 /* Return the time used by the program so far (user time + system time). */
23 clock_t
24 clock (void)
26 __set_errno (ENOSYS);
27 return (clock_t) -1;
30 stub_warning (clock)