sysdeps/unix/time.c

   1 /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <time.h>
  21 #include <sys/time.h>
  22
  23
  24 /* Return the current time as a `time_t' and also put it in *T if T is
  25    not NULL.  Time is represented as seconds from Jan 1 00:00:00 1970.  */
  26 time_t
  27 DEFUN(time, (t), time_t *t)
  28 {
  29   struct timeval tv;
  30   time_t result;
  31
  32   if (__gettimeofday (&tv, (struct timezone *) NULL))
  33     result = (time_t) -1;
  34   else
  35     result = (time_t) tv.tv_sec;
  36
  37   if (t != NULL)
  38     *t = result;
  39   return result;
  40 }