time.c 1.3 KB

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  1. /* Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If not,
  13. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14. Boston, MA 02111-1307, USA. */
  15. #include <time.h>
  16. #include <sys/time.h>
  17. /* Return the current time as a `time_t' and also put it in *T if T is
  18. not NULL. Time is represented as seconds from Jan 1 00:00:00 1970. */
  19. time_t time (time_t *t)
  20. {
  21. struct timeval tv;
  22. time_t result;
  23. if (gettimeofday (&tv, (struct timezone *) NULL))
  24. result = (time_t) -1;
  25. else
  26. result = (time_t) tv.tv_sec;
  27. if (t != NULL)
  28. *t = result;
  29. return result;
  30. }