timegm.c 1.1 KB

12345678910111213141516171819202122232425262728293031323334
  1. /* Convert UTC calendar time to simple time. Like mktime but assumes UTC.
  2. Copyright (C) 1994-2019 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #ifndef _LIBC
  16. # include <config.h>
  17. #endif
  18. #include <time.h>
  19. #include "mktime-internal.h"
  20. time_t
  21. timegm (struct tm *tmp)
  22. {
  23. static mktime_offset_t gmtime_offset;
  24. tmp->tm_isdst = 0;
  25. return __mktime_internal (tmp, __gmtime_r, &gmtime_offset);
  26. }