/*-

  * Copyright (c) 1982, 1986, 1993

  *	The Regents of the University of California.  All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in the

  *    documentation and/or other materials provided with the distribution.

  * 4. Neither the name of the University nor the names of its contributors

  *    may be used to endorse or promote products derived from this software

  *    without specific prior written permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

  * SUCH DAMAGE.

  * © * Portions Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

  *	@(#)time.h	8.5 (Berkeley) 5/4/95

  * $FreeBSD: src/sys/sys/time.h,v 1.69 2005/04/02 12:33:27 das Exp $

  */

 #ifndef _SYS_TIME_H_

 #define _SYS_TIME_H_

 #include <sys/_timeval.h>

 #include <sys/types.h>

 #include <sys/timespec.h>

 struct timezone {

 	int	tz_minuteswest;	/* minutes west of Greenwich */

 	int	tz_dsttime;	/* type of dst correction */

 };

 #define	DST_NONE	0	/* not on dst */

 #define	DST_USA		1	/* USA style dst */

 #define	DST_AUST	2	/* Australian style dst */

 #define	DST_WET		3	/* Western European dst */

 #define	DST_MET		4	/* Middle European dst */

 #define	DST_EET		5	/* Eastern European dst */

 #define	DST_CAN		6	/* Canada */

 #if __BSD_VISIBLE

 struct bintime {

 	time_t	sec;

 	uint64_t frac;

 };

 static __inline void

 bintime_addx(struct bintime *bt, uint64_t x)

 {

 	uint64_t u;

 	u = bt->frac;

 	bt->frac += x;

 	if (u > bt->frac)

 		bt->sec++;

 }

 static __inline void

 bintime_add(struct bintime *bt, const struct bintime *bt2)

 {

 	uint64_t u;

 	u = bt->frac;

 	bt->frac += bt2->frac;

 	if (u > bt->frac)

 		bt->sec++;

 	bt->sec += bt2->sec;

 }

 static __inline void

 bintime_sub(struct bintime *bt, const struct bintime *bt2)

 {

 	uint64_t u;

 	u = bt->frac;

 	bt->frac -= bt2->frac;

 	if (u < bt->frac)

 		bt->sec--;

 	bt->sec -= bt2->sec;

 }

 /*-

  * Background information:

  *

  * When converting between timestamps on parallel timescales of differing

  * resolutions it is historical and scientific practice to round down rather

  * than doing 4/5 rounding.

  *

  *   The date changes at midnight, not at noon.

  *

  *   Even at 15:59:59.999999999 it's not four'o'clock.

  *

  *   time_second ticks after N.999999999 not after N.4999999999

  */

 static __inline void

 bintime2timespec(const struct bintime *bt, struct timespec *ts)

 {

 	ts->tv_sec = bt->sec;

 	ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32;

 }

 static __inline void

 timespec2bintime(const struct timespec *ts, struct bintime *bt)

 {

 	bt->sec = ts->tv_sec;

 	/* 18446744073 = int(2^64 / 1000000000) */

 	bt->frac = ts->tv_nsec * (uint64_t)18446744073LL; 

 }

 static __inline void

 bintime2timeval(const struct bintime *bt, struct timeval *tv)

 {

 	tv->tv_sec = bt->sec;

 	tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32;

 }

 static __inline void

 timeval2bintime(const struct timeval *tv, struct bintime *bt)

 {

 	bt->sec = tv->tv_sec;

 	/* 18446744073709 = int(2^64 / 1000000) */

 	bt->frac = tv->tv_usec * (uint64_t)18446744073709LL;

 }

 #endif /* __BSD_VISIBLE */

 /*

  * Names of the interval timers, and structure

  * defining a timer setting.

  */

 #define	ITIMER_REAL	0

 #define	ITIMER_VIRTUAL	1

 #define	ITIMER_PROF	2

 struct itimerval {

 	struct	timeval it_interval;	/* timer interval */

 	struct	timeval it_value;	/* current value */

 };

 /*

  * Getkerninfo clock information structure

  */

 struct clockinfo {

 	int	hz;		/* clock frequency */

 	int	tick;		/* micro-seconds per hz tick */

 	int	spare;

 	int	stathz;		/* statistics clock frequency */

 	int	profhz;		/* profiling clock frequency */

 };

 #include <time.h>

 #include <sys/cdefs.h>

 __BEGIN_DECLS

 IMPORT_C int	adjtime(const struct timeval *, struct timeval *);

 IMPORT_C int	gettimeofday(struct timeval *, struct timezone *);

 int	settimeofday(const struct timeval *, const struct timezone *);

 IMPORT_C int	utimes(const char *, const struct timeval *);

 __END_DECLS

 #endif /* !_SYS_TIME_H_ */