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time.h revision 1.19
      1 /*	$NetBSD: time.h,v 1.19 1998/07/27 11:08:38 mycroft Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1989, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  * (c) UNIX System Laboratories, Inc.
      7  * All or some portions of this file are derived from material licensed
      8  * to the University of California by American Telephone and Telegraph
      9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
     10  * the permission of UNIX System Laboratories, Inc.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  *	@(#)time.h	8.3 (Berkeley) 1/21/94
     41  */
     42 
     43 #ifndef _TIME_H_
     44 #define	_TIME_H_
     45 
     46 #include <sys/cdefs.h>
     47 #include <machine/ansi.h>
     48 
     49 #ifndef	NULL
     50 #define	NULL	0
     51 #endif
     52 
     53 #ifdef	_BSD_CLOCK_T_
     54 typedef	_BSD_CLOCK_T_	clock_t;
     55 #undef	_BSD_CLOCK_T_
     56 #endif
     57 
     58 #ifdef	_BSD_TIME_T_
     59 typedef	_BSD_TIME_T_	time_t;
     60 #undef	_BSD_TIME_T_
     61 #endif
     62 
     63 #ifdef	_BSD_SIZE_T_
     64 typedef	_BSD_SIZE_T_	size_t;
     65 #undef	_BSD_SIZE_T_
     66 #endif
     67 
     68 #ifdef	_BSD_CLOCKID_T_
     69 typedef	_BSD_CLOCKID_T_	clockid_t;
     70 #undef	_BSD_CLOCKID_T_
     71 #endif
     72 
     73 #ifdef	_BSD_TIMER_T_
     74 typedef	_BSD_TIMER_T_	timer_t;
     75 #undef	_BSD_TIMER_T_
     76 #endif
     77 
     78 #define CLOCKS_PER_SEC	100
     79 
     80 struct tm {
     81 	int	tm_sec;		/* seconds after the minute [0-61] */
     82 	int	tm_min;		/* minutes after the hour [0-59] */
     83 	int	tm_hour;	/* hours since midnight [0-23] */
     84 	int	tm_mday;	/* day of the month [1-31] */
     85 	int	tm_mon;		/* months since January [0-11] */
     86 	int	tm_year;	/* years since 1900 */
     87 	int	tm_wday;	/* days since Sunday [0-6] */
     88 	int	tm_yday;	/* days since January 1 [0-365] */
     89 	int	tm_isdst;	/* Daylight Savings Time flag */
     90 	long	tm_gmtoff;	/* offset from CUT in seconds */
     91 	__aconst char *tm_zone;	/* timezone abbreviation */
     92 };
     93 
     94 #include <machine/limits.h>	/* Include file containing CLK_TCK. */
     95 
     96 #include <sys/cdefs.h>
     97 
     98 __BEGIN_DECLS
     99 char *asctime __P((const struct tm *));
    100 clock_t clock __P((void));
    101 char *ctime __P((const time_t *));
    102 double difftime __P((time_t, time_t));
    103 struct tm *gmtime __P((const time_t *));
    104 struct tm *localtime __P((const time_t *));
    105 time_t mktime __P((struct tm *));
    106 size_t strftime __P((char *, size_t, const char *, const struct tm *));
    107 time_t time __P((time_t *));
    108 
    109 #if !defined(_ANSI_SOURCE)
    110 #define CLK_TCK		100
    111 extern __aconst char *tzname[2];
    112 void tzset __P((void));
    113 #endif /* not ANSI */
    114 
    115 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
    116 char *strptime __P((const char *, const char *, struct tm *));
    117 char *timezone __P((int, int));
    118 void tzsetwall __P((void));
    119 struct tm *offtime __P((const time_t *const, const long));
    120 time_t timelocal __P((struct tm *const));
    121 time_t timegm __P((struct tm *const));
    122 time_t timeoff __P((struct tm *const, const long));
    123 long gtime __P((struct tm *const));
    124 time_t time2posix __P((time_t));
    125 time_t posix2time __P((time_t));
    126 #endif /* neither ANSI nor POSIX */
    127 
    128 #if (!defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) && \
    129      !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    130     ((_POSIX_C_SOURCE - 0) >= 199309L)
    131 #include <sys/time.h>		/* for struct timespec */
    132 struct sigevent;
    133 struct itimerspec;
    134 int clock_getres __P((clockid_t, struct timespec *));
    135 int clock_gettime __P((clockid_t, struct timespec *));
    136 int clock_settime __P((clockid_t, const struct timespec *));
    137 int nanosleep __P((const struct timespec *, struct timespec *));
    138 int timer_create __P((clockid_t, struct sigevent *, timer_t *));
    139 int timer_delete __P((timer_t));
    140 int timer_getoverrun __P((timer_t));
    141 int timer_gettime __P((timer_t, struct itimerspec *));
    142 int timer_settime __P((timer_t, int, const struct itimerspec *,
    143     struct itimerspec *));
    144 #endif
    145 __END_DECLS
    146 
    147 #endif /* !_TIME_H_ */
    148