1  /* Convert `time_t' to `struct tm' in local time zone.
       2     Copyright (C) 1991-2023 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     <https://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  __localtime64_r (const __time64_t *t, struct tm *tp)
      29  {
      30    return __tz_convert (*t, 1, tp);
      31  }
      32  
      33  /* Provide a 32-bit variant if needed.  */
      34  
      35  #if __TIMESIZE != 64
      36  
      37  struct tm *
      38  __localtime_r (const time_t *t, struct tm *tp)
      39  {
      40    __time64_t t64 = *t;
      41    return __localtime64_r (&t64, tp);
      42  }
      43  libc_hidden_def (__localtime64_r)
      44  
      45  #endif
      46  
      47  weak_alias (__localtime_r, localtime_r)
      48  
      49  
      50  /* Return the `struct tm' representation of *T in local time.  */
      51  struct tm *
      52  __localtime64 (const __time64_t *t)
      53  {
      54    return __tz_convert (*t, 1, &_tmbuf);
      55  }
      56  libc_hidden_def (__localtime64)
      57  
      58  /* Provide a 32-bit variant if needed.  */
      59  
      60  #if __TIMESIZE != 64
      61  
      62  struct tm *
      63  localtime (const time_t *t)
      64  {
      65    __time64_t t64 = *t;
      66    return __localtime64 (&t64);
      67  }
      68  libc_hidden_def (localtime)
      69  
      70  #endif