usr/include/time.h

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   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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)time.h      8.3 (Berkeley) 1/21/94
  35  */
  36 
  37 #ifndef _TIME_H_
  38 #define _TIME_H_
  39 
  40 #include <sys/param.h>
  41 
  42 #ifndef NULL
  43 #define NULL    0
  44 #endif
  45 
  46 #if !defined(_CLOCK_T)
  47 #define _CLOCK_T
  48 typedef unsigned long   clock_t;        /* relative time in a specified resolution */
  49 #endif
  50 
  51 #if !defined(_SIZE_T)
  52 #define _SIZE_T
  53 typedef unsigned int    size_t;         /* size of something in bytes */
  54 #endif
  55 
  56 #if !defined(_TIME_T)
  57 #define _TIME_T
  58 typedef long            time_t;         /* time of day in seconds */
  59 #endif
  60 
  61 struct tm {
  62         int     tm_sec;         /* seconds after the minute [0-60] */
  63         int     tm_min;         /* minutes after the hour [0-59] */
  64         int     tm_hour;        /* hours since midnight [0-23] */
  65         int     tm_mday;        /* day of the month [1-31] */
  66         int     tm_mon;         /* months since January [0-11] */
  67         int     tm_year;        /* years since 1900 */
  68         int     tm_wday;        /* days since Sunday [0-6] */
  69         int     tm_yday;        /* days since January 1 [0-365] */
  70         int     tm_isdst;       /* Daylight Savings Time flag */
  71 };
  72 
  73 #define CLK_TCK         HZ      /* ticks per second */
  74 #define CLOCKS_PER_SEC  HZ      /* same with CLK_TCK */
  75 
  76 
  77 #include <sys/cdefs.h>
  78 
  79 __BEGIN_DECLS
  80 char    *asctime(const struct tm *);
  81 clock_t  clock(void);
  82 char    *ctime(const time_t *);
  83 double   difftime(time_t, time_t);
  84 struct tm *gmtime(const time_t *);
  85 struct tm *localtime(const time_t *);
  86 time_t   mktime(struct tm *);
  87 size_t   strftime(char *, size_t, const char *, const struct tm *);
  88 time_t   time(time_t *);
  89 
  90 char     *asctime_r(const struct tm *, char *);
  91 struct tm *gmtime_r(const time_t *, struct tm *);
  92 struct tm *localtime_r(const time_t *, struct tm *);
  93 
  94 #ifndef _ANSI_SOURCE
  95 void     tzset(void);
  96 #endif /* not ANSI */
  97 
  98 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
  99 char    *timezone(int, int);
 100 void     tzsetwall(void);
 101 #endif /* neither ANSI nor POSIX */
 102 __END_DECLS
 103 
 104 #endif /* !_TIME_H_ */
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