time.h revision 275996 
1/* $FreeBSD: stable/10/lib/libnetbsd/sys/time.h 275996 2014-12-21 11:11:17Z ngie $ */
2
3/*
4 * Copyright (c) 1982, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)time.h	8.5 (Berkeley) 5/4/95
32 */
33
34#ifndef _LIBNETBSD_SYS_TIME_H_
35#define	_LIBNETBSD_SYS_TIME_H_
36
37#include_next <sys/time.h>
38
39/* Operations on timespecs. */
40#define	timespecclear(tsp)	(tsp)->tv_sec = (time_t)((tsp)->tv_nsec = 0L)
41#define	timespecisset(tsp)	((tsp)->tv_sec || (tsp)->tv_nsec)
42#define	timespeccmp(tsp, usp, cmp)					\
43	(((tsp)->tv_sec == (usp)->tv_sec) ?				\
44	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\
45	    ((tsp)->tv_sec cmp (usp)->tv_sec))
46#define	timespecadd(tsp, usp, vsp)					\
47	do {								\
48		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
49		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
50		if ((vsp)->tv_nsec >= 1000000000L) {			\
51			(vsp)->tv_sec++;				\
52			(vsp)->tv_nsec -= 1000000000L;			\
53		}							\
54	} while (/* CONSTCOND */ 0)
55#define	timespecsub(tsp, usp, vsp)					\
56	do {								\
57		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
58		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
59		if ((vsp)->tv_nsec < 0) {				\
60			(vsp)->tv_sec--;				\
61			(vsp)->tv_nsec += 1000000000L;			\
62		}							\
63	} while (/* CONSTCOND */ 0)
64
65#endif
66