usr/src/stand/lib/sa/time.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SA_TIME_H
  28 #define _SA_TIME_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 /*
  33  * Exported interfaces for standalone's subset of libc's <time.h>.
  34  * All standalone code *must* use this header rather than libc's.
  35  */
  36
  37 #include <sys/types.h>
  38
  39 #ifdef __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 struct  tm {
  44         int     tm_sec;         /* seconds after the minute */
  45         int     tm_min;         /* minutes after the hour */
  46         int     tm_hour;        /* hour since midnight */
  47         int     tm_mday;        /* day of the month */
  48         int     tm_mon;         /* months since January */
  49         int     tm_year;        /* years since 1900 */
  50         int     tm_wday;        /* days since Sunday */
  51         int     tm_yday;        /* Days since January 1 */
  52         int     tm_isdst;       /* flag for alternate daylight savings time */
  53 };
  54
  55 extern time_t time(time_t *);
  56 extern char *ctime(const time_t *t);
  57 extern struct tm *gmtime(const time_t *);
  58 extern struct tm *localtime(const time_t *);
  59
  60 /*
  61  * The following silly #defines are actually ripped off from <tzfile.h>.
  62  * Since <tzfile.h> is not a documented header, it seemed better to just
  63  * inline them here rather than having a full-blown <tzfile.h> of our own.
  64  */
  65 #define EPOCH_YEAR              1970
  66 #define EPOCH_WDAY              4
  67 #define SECS_PER_MIN            60
  68 #define DAYS_PER_WEEK           7
  69 #define DAYS_PER_NYEAR          365
  70 #define DAYS_PER_LYEAR          366
  71 #define MONS_PER_YEAR           12
  72 #define SECS_PER_HOUR           (SECS_PER_MIN * 60)
  73 #define SECS_PER_DAY            (SECS_PER_HOUR * 24)
  74 #define TM_YEAR_BASE            1900
  75
  76 #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
  77
  78 #ifdef __cplusplus
  79 }
  80 #endif
  81
  82 #endif /* _SA_TIME_H */