xref: /illumos-gate/usr/src/stand/lib/sa/time.h (revision 7c478bd9)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
27*7c478bd9Sstevel@tonic-gate #ifndef _SA_TIME_H
28*7c478bd9Sstevel@tonic-gate #define	_SA_TIME_H
30*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
32*7c478bd9Sstevel@tonic-gate /*
33*7c478bd9Sstevel@tonic-gate  * Exported interfaces for standalone's subset of libc's <time.h>.
34*7c478bd9Sstevel@tonic-gate  * All standalone code *must* use this header rather than libc's.
35*7c478bd9Sstevel@tonic-gate  */
37*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
39*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus
40*7c478bd9Sstevel@tonic-gate extern "C" {
41*7c478bd9Sstevel@tonic-gate #endif
43*7c478bd9Sstevel@tonic-gate struct	tm {
44*7c478bd9Sstevel@tonic-gate 	int	tm_sec;		/* seconds after the minute */
45*7c478bd9Sstevel@tonic-gate 	int	tm_min;		/* minutes after the hour */
46*7c478bd9Sstevel@tonic-gate 	int	tm_hour;	/* hour since midnight */
47*7c478bd9Sstevel@tonic-gate 	int	tm_mday;	/* day of the month */
48*7c478bd9Sstevel@tonic-gate 	int	tm_mon;		/* months since January */
49*7c478bd9Sstevel@tonic-gate 	int	tm_year;	/* years since 1900 */
50*7c478bd9Sstevel@tonic-gate 	int	tm_wday;	/* days since Sunday */
51*7c478bd9Sstevel@tonic-gate 	int	tm_yday;	/* Days since January 1 */
52*7c478bd9Sstevel@tonic-gate 	int	tm_isdst;	/* flag for alternate daylight savings time */
53*7c478bd9Sstevel@tonic-gate };
55*7c478bd9Sstevel@tonic-gate extern time_t time(time_t *);
56*7c478bd9Sstevel@tonic-gate extern char *ctime(const time_t *t);
57*7c478bd9Sstevel@tonic-gate extern struct tm *gmtime(const time_t *);
58*7c478bd9Sstevel@tonic-gate extern struct tm *localtime(const time_t *);
60*7c478bd9Sstevel@tonic-gate /*
61*7c478bd9Sstevel@tonic-gate  * The following silly #defines are actually ripped off from <tzfile.h>.
62*7c478bd9Sstevel@tonic-gate  * Since <tzfile.h> is not a documented header, it seemed better to just
63*7c478bd9Sstevel@tonic-gate  * inline them here rather than having a full-blown <tzfile.h> of our own.
64*7c478bd9Sstevel@tonic-gate  */
65*7c478bd9Sstevel@tonic-gate #define	EPOCH_YEAR		1970
66*7c478bd9Sstevel@tonic-gate #define	EPOCH_WDAY		4
67*7c478bd9Sstevel@tonic-gate #define	SECS_PER_MIN		60
68*7c478bd9Sstevel@tonic-gate #define	DAYS_PER_WEEK		7
69*7c478bd9Sstevel@tonic-gate #define	DAYS_PER_NYEAR		365
70*7c478bd9Sstevel@tonic-gate #define	DAYS_PER_LYEAR		366
71*7c478bd9Sstevel@tonic-gate #define	MONS_PER_YEAR		12
72*7c478bd9Sstevel@tonic-gate #define	SECS_PER_HOUR		(SECS_PER_MIN * 60)
73*7c478bd9Sstevel@tonic-gate #define	SECS_PER_DAY		(SECS_PER_HOUR * 24)
74*7c478bd9Sstevel@tonic-gate #define	TM_YEAR_BASE		1900
76*7c478bd9Sstevel@tonic-gate #define	isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
78*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus
79*7c478bd9Sstevel@tonic-gate }
80*7c478bd9Sstevel@tonic-gate #endif
82*7c478bd9Sstevel@tonic-gate #endif /* _SA_TIME_H */