time.h revision 102227 
1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 *	@(#)time.h	8.3 (Berkeley) 1/21/94
39 */
40
41/*
42 * $FreeBSD: head/include/time.h 102227 2002-08-21 16:20:02Z mike $
43 */
44
45#ifndef _TIME_H_
46#define	_TIME_H_
47
48#include <sys/cdefs.h>
49#include <sys/_types.h>
50
51#include <machine/ansi.h>
52
53#if __POSIX_VISIBLE > 0 && __POSIX_VISIBLE < 200112 || __BSD_VISIBLE
54/*
55 * Frequency of the clock ticks reported by times().  Deprecated - use
56 * sysconf(_SC_CLK_TCK) instead.  (Removed in 1003.1-2001.)
57 */
58#define	CLK_TCK		_BSD_CLK_TCK_
59#endif
60
61/* Frequency of the clock ticks reported by clock().  */
62#define	CLOCKS_PER_SEC	_BSD_CLOCKS_PER_SEC_
63
64#ifndef	NULL
65#define	NULL	0
66#endif
67
68#ifndef _CLOCK_T_DECLARED
69typedef	__clock_t	clock_t;
70#define	_CLOCK_T_DECLARED
71#endif
72
73#ifndef _TIME_T_DECLARED
74typedef	__time_t	time_t;
75#define	_TIME_T_DECLARED
76#endif
77
78#ifndef _SIZE_T_DECLARED
79typedef	__size_t	size_t;
80#define	_SIZE_T_DECLARED
81#endif
82
83#if __POSIX_VISIBLE >= 199309
84/*
85 * New in POSIX 1003.1b-1993.
86 */
87#ifndef _CLOCKID_T_DECLARED
88typedef	__clockid_t	clockid_t;
89#define	_CLOCKID_T_DECLARED
90#endif
91
92#ifndef _TIMER_T_DECLARED
93typedef	__timer_t	timer_t;
94#define	_TIMER_T_DECLARED
95#endif
96
97#include <sys/timespec.h>
98#endif /* __POSIX_VISIBLE >= 199309 */
99
100struct tm {
101	int	tm_sec;		/* seconds after the minute [0-60] */
102	int	tm_min;		/* minutes after the hour [0-59] */
103	int	tm_hour;	/* hours since midnight [0-23] */
104	int	tm_mday;	/* day of the month [1-31] */
105	int	tm_mon;		/* months since January [0-11] */
106	int	tm_year;	/* years since 1900 */
107	int	tm_wday;	/* days since Sunday [0-6] */
108	int	tm_yday;	/* days since January 1 [0-365] */
109	int	tm_isdst;	/* Daylight Savings Time flag */
110	long	tm_gmtoff;	/* offset from UTC in seconds */
111	char	*tm_zone;	/* timezone abbreviation */
112};
113
114#if __POSIX_VISIBLE
115extern char *tzname[];
116#endif
117
118__BEGIN_DECLS
119char *asctime(const struct tm *);
120clock_t clock(void);
121char *ctime(const time_t *);
122double difftime(time_t, time_t);
123struct tm *gmtime(const time_t *);
124struct tm *localtime(const time_t *);
125time_t mktime(struct tm *);
126size_t strftime(char *__restrict, size_t, const char *__restrict,
127    const struct tm *__restrict);
128time_t time(time_t *);
129
130#if __POSIX_VISIBLE
131void tzset(void);
132#endif
133
134#if __POSIX_VISIBLE >= 199309
135int clock_getres(clockid_t, struct timespec *);
136int clock_gettime(clockid_t, struct timespec *);
137int clock_settime(clockid_t, const struct timespec *);
138int nanosleep(const struct timespec *, struct timespec *);
139#endif /* __POSIX_VISIBLE >= 199309 */
140
141#if __POSIX_VISIBLE >= 199506
142char *asctime_r(const struct tm *, char *);
143char *ctime_r(const time_t *, char *);
144struct tm *gmtime_r(const time_t *, struct tm *);
145struct tm *localtime_r(const time_t *, struct tm *);
146#endif
147
148#if __XSI_VISIBLE
149char *strptime(const char *__restrict, const char *__restrict,
150    struct tm *__restrict);
151#endif
152
153#if __BSD_VISIBLE
154char *timezone(int, int);
155void tzsetwall(void);
156time_t timelocal(struct tm * const);
157time_t timegm(struct tm * const);
158#endif /* __BSD_VISIBLE */
159__END_DECLS
160
161#endif /* !_TIME_H_ */
162