gl/timespec.h

   1 /* timespec -- System time interface
   2
   3    Copyright (C) 2000, 2002, 2004, 2005, 2007 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #if ! defined TIMESPEC_H
  20 # define TIMESPEC_H
  21
  22 # include <time.h>
  23
  24 /* Return negative, zero, positive if A < B, A == B, A > B, respectively.
  25    Assume the nanosecond components are in range, or close to it.  */
  26 static inline int
  27 timespec_cmp (struct timespec a, struct timespec b)
  28 {
  29   return (a.tv_sec < b.tv_sec ? -1
  30           : a.tv_sec > b.tv_sec ? 1
  31           : a.tv_nsec - b.tv_nsec);
  32 }
  33
  34 void gettime (struct timespec *);
  35 int settime (struct timespec const *);
  36
  37 #endif