time/localtime.c

   1 /* Convert `time_t' to `struct tm' in local time zone.
   2    Copyright (C) 1991, 92, 93, 95, 96, 97, 98 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <time.h>
  21
  22 /* The C Standard says that localtime and gmtime return the same pointer.  */
  23 struct tm _tmbuf;
  24
  25
  26 /* Return the `struct tm' representation of *T in local time,
  27    using *TP to store the result.  */
  28 struct tm *
  29 __localtime_r (t, tp)
  30      const time_t *t;
  31      struct tm *tp;
  32 {
  33   return __tz_convert (t, 1, tp);
  34 }
  35 weak_alias (__localtime_r, localtime_r)
  36
  37
  38 /* Return the `struct tm' representation of *T in local time.  */
  39 struct tm *
  40 localtime (t)
  41      const time_t *t;
  42 {
  43   return __tz_convert (t, 1, &_tmbuf);
  44 }