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

   Copyright (C) 1994, 1997, 2003-2004, 2006-2007, 2009-2018 Free Software

   Foundation, Inc.  This file is part of the GNU C Library.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3, or (at your option)

   any later version.

   This program 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 General Public License for more details.

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

   along with this program; if not, see <https://www.gnu.org/licenses/>.  */

#ifndef _LIBC

# include <config.h>

#endif

#include <time.h>

#ifdef _LIBC

typedef time_t mktime_offset_t;

#else

# undef __gmtime_r

# define __gmtime_r gmtime_r

# define __mktime_internal mktime_internal

# include "mktime-internal.h"

#endif

time_t

timegm (struct tm *tmp)

{

  static mktime_offset_t gmtime_offset;

  tmp->tm_isdst = 0;

  return __mktime_internal (tmp, __gmtime_r, &gmtime_offset);

}