1 /* Reentrant time functions like localtime_r.
2
3 Copyright (C) 2003, 2006-2007, 2010-2021 Free Software Foundation,
4 Inc.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, see <https://www.gnu.org/licenses/>. */
18
19 /* Written by Paul Eggert. */
20
21 #include <config.h>
22
23 #include <time.h>
24
25 static struct tm *
copy_tm_result(struct tm * dest,struct tm const * src)26 copy_tm_result (struct tm *dest, struct tm const *src)
27 {
28 if (! src)
29 return 0;
30 *dest = *src;
31 return dest;
32 }
33
34
35 struct tm *
gmtime_r(time_t const * restrict t,struct tm * restrict tp)36 gmtime_r (time_t const * restrict t, struct tm * restrict tp)
37 {
38 return copy_tm_result (tp, gmtime (t));
39 }
40
41 struct tm *
localtime_r(time_t const * restrict t,struct tm * restrict tp)42 localtime_r (time_t const * restrict t, struct tm * restrict tp)
43 {
44 return copy_tm_result (tp, localtime (t));
45 }
46