1 /* Reentrant time functions like localtime_r.
2
3 Copyright (C) 2003, 2006-2007, 2010-2020 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1, or (at your option)
8 any later version.
9
10 This program 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
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, see <https://www.gnu.org/licenses/>. */
17
18 /* Written by Paul Eggert. */
19
20 #include <config.h>
21
22 #include <time.h>
23
24 static struct tm *
copy_tm_result(struct tm * dest,struct tm const * src)25 copy_tm_result (struct tm *dest, struct tm const *src)
26 {
27 if (! src)
28 return 0;
29 *dest = *src;
30 return dest;
31 }
32
33
34 struct tm *
gmtime_r(time_t const * restrict t,struct tm * restrict tp)35 gmtime_r (time_t const * restrict t, struct tm * restrict tp)
36 {
37 return copy_tm_result (tp, gmtime (t));
38 }
39
40 struct tm *
localtime_r(time_t const * restrict t,struct tm * restrict tp)41 localtime_r (time_t const * restrict t, struct tm * restrict tp)
42 {
43 return copy_tm_result (tp, localtime (t));
44 }
45