/* Convert UTC calendar time to simple time.  Like mktime but assumes UTC.

   Copyright (C) 1994-2023 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <https://www.gnu.org/licenses/>.  */

#ifndef _LIBC

# include <libc-config.h>

#endif

#include <time.h>

#include <errno.h>

#include "mktime-internal.h"

__time64_t

__timegm64 (struct tm *tmp)

{

  static mktime_offset_t gmtime_offset;

  tmp->tm_isdst = 0;

  return __mktime_internal (tmp, __gmtime64_r, &gmtime_offset);

}

#if defined _LIBC && __TIMESIZE != 64

libc_hidden_def (__timegm64)

time_t

timegm (struct tm *tmp)

{

  struct tm tm = *tmp;

  __time64_t t = __timegm64 (&tm);

  if (in_time_t_range (t))

    {

      *tmp = tm;

      return t;

    }

  else

    {

      __set_errno (EOVERFLOW);

      return -1;

    }

}

#endif