1 /* timespec -- System time interface 2 3 Copyright (C) 2000, 2002, 2004-2005, 2007, 2009-2010 Free Software 4 Foundation, Inc. 5 6 This program is free software: you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 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 ? -1 32 : a.tv_nsec > b.tv_nsec ? 1 33 : 0); 34 } 35 36 void gettime (struct timespec *); 37 int settime (struct timespec const *); 38 39 #endif 40