xref: /openbsd/include/time.h (revision ad7ac144)
1 /*	$OpenBSD: time.h,v 1.8 1999/09/17 13:13:46 espie Exp $	*/
2 /*	$NetBSD: time.h,v 1.9 1994/10/26 00:56:35 cgd Exp $	*/
3 
4 /*
5  * Copyright (c) 1989 The Regents of the University of California.
6  * All rights reserved.
7  *
8  * (c) UNIX System Laboratories, Inc.
9  * All or some portions of this file are derived from material licensed
10  * to the University of California by American Telephone and Telegraph
11  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
12  * the permission of UNIX System Laboratories, Inc.
13  *
14  * Redistribution and use in source and binary forms, with or without
15  * modification, are permitted provided that the following conditions
16  * are met:
17  * 1. Redistributions of source code must retain the above copyright
18  *    notice, this list of conditions and the following disclaimer.
19  * 2. Redistributions in binary form must reproduce the above copyright
20  *    notice, this list of conditions and the following disclaimer in the
21  *    documentation and/or other materials provided with the distribution.
22  * 3. All advertising materials mentioning features or use of this software
23  *    must display the following acknowledgement:
24  *	This product includes software developed by the University of
25  *	California, Berkeley and its contributors.
26  * 4. Neither the name of the University nor the names of its contributors
27  *    may be used to endorse or promote products derived from this software
28  *    without specific prior written permission.
29  *
30  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40  * SUCH DAMAGE.
41  *
42  *	@(#)time.h	5.12 (Berkeley) 3/9/91
43  */
44 
45 #ifndef _TIME_H_
46 #define	_TIME_H_
47 
48 #include <machine/ansi.h>
49 
50 #ifndef	NULL
51 #ifdef 	__GNUG__
52 #define	NULL	__null
53 #else
54 #define	NULL	0
55 #endif
56 #endif
57 
58 #ifdef	_BSD_CLOCK_T_
59 typedef	_BSD_CLOCK_T_	clock_t;
60 #undef	_BSD_CLOCK_T_
61 #endif
62 
63 #ifdef	_BSD_TIME_T_
64 typedef	_BSD_TIME_T_	time_t;
65 #undef	_BSD_TIME_T_
66 #endif
67 
68 #ifdef	_BSD_SIZE_T_
69 typedef	_BSD_SIZE_T_	size_t;
70 #undef	_BSD_SIZE_T_
71 #endif
72 
73 #define CLOCKS_PER_SEC	100
74 
75 struct tm {
76 	int	tm_sec;		/* seconds after the minute [0-60] */
77 	int	tm_min;		/* minutes after the hour [0-59] */
78 	int	tm_hour;	/* hours since midnight [0-23] */
79 	int	tm_mday;	/* day of the month [1-31] */
80 	int	tm_mon;		/* months since January [0-11] */
81 	int	tm_year;	/* years since 1900 */
82 	int	tm_wday;	/* days since Sunday [0-6] */
83 	int	tm_yday;	/* days since January 1 [0-365] */
84 	int	tm_isdst;	/* Daylight Saving Time flag */
85 	long	tm_gmtoff;	/* offset from UTC in seconds */
86 	char	*tm_zone;	/* timezone abbreviation */
87 };
88 
89 #include <sys/cdefs.h>
90 
91 __BEGIN_DECLS
92 char *asctime __P((const struct tm *));
93 clock_t clock __P((void));
94 char *ctime __P((const time_t *));
95 double difftime __P((time_t, time_t));
96 struct tm *gmtime __P((const time_t *));
97 struct tm *localtime __P((const time_t *));
98 time_t mktime __P((struct tm *));
99 size_t strftime __P((char *, size_t, const char *, const struct tm *));
100 char *strptime __P((const char *, const char *, struct tm *));
101 time_t time __P((time_t *));
102 char *asctime_r __P((const struct tm *, char *));
103 char *ctime_r __P((const time_t *, char *));
104 struct tm *gmtime_r __P((const time_t *, struct tm *));
105 struct tm *localtime_r __P((const time_t *, struct tm *));
106 
107 #if !defined(_ANSI_SOURCE)
108 #define CLK_TCK		100
109 extern char *tzname[2];
110 void tzset __P((void));
111 #endif /* not ANSI */
112 
113 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
114 char *timezone __P((int, int));
115 void tzsetwall __P((void));
116 #endif /* neither ANSI nor POSIX */
117 __END_DECLS
118 
119 #endif /* !_TIME_H_ */
120