time/localtime.c

   1 /* Convert `time_t' to `struct tm' in local time zone.
   2    Copyright (C) 1991-2017 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, or (at your option) any later version.
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <time.h>
  20
  21 /* The C Standard says that localtime and gmtime return the same pointer.  */
  22 struct tm _tmbuf;
  23
  24
  25 /* Return the `struct tm' representation of *T in local time,
  26    using *TP to store the result.  */
  27 struct tm *
  28 __localtime_r (const time_t *t, struct tm *tp)
  29 {
  30   return __tz_convert (t, 1, tp);
  31 }
  32 weak_alias (__localtime_r, localtime_r)
  33
  34
  35 /* Return the `struct tm' representation of *T in local time.  */
  36 struct tm *
  37 localtime (const time_t *t)
  38 {
  39   return __tz_convert (t, 1, &_tmbuf);
  40 }
  41 libc_hidden_def (localtime)