home *** CD-ROM | disk | FTP | other *** search
- /* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- /*
- * ANSI Standard: 4.12 DATE and TIME <time.h>
- */
-
- #ifndef _TIME_H
-
- #if !defined(__need_time_t) && !defined(__need_clock_t)
- #define _TIME_H 1
- #include <features.h>
-
- __BEGIN_DECLS
-
- #endif
-
- #ifdef _TIME_H
- /* Get size_t and NULL from <stddef.h>. */
- #define __need_size_t
- #define __need_NULL
- #include <stddef.h>
- #endif /* <time.h> included. */
-
-
-
- #ifdef _TIME_H
- /* Processor clock ticks per second. */
- #define CLOCKS_PER_SEC 1 /* ??? */
-
- #ifdef __USE_POSIX
- #define CLK_TCK 60 /* ??? */
- #endif
-
- #endif /* <time.h> included. */
-
-
- #if !defined(__clock_t_defined) && \
- (defined(_TIME_H) || defined(__need_clock_t))
- #define __clock_t_defined 1
-
- /* Returned by `clock'. */
- typedef long int clock_t;
-
- #endif /* clock_t not defined and <time.h> or need clock_t. */
- #undef __need_clock_t
-
- #if !defined(__time_t_defined) && \
- (defined(_TIME_H) || defined(__need_time_t))
- #define __time_t_defined 1
-
- #include <gnu/types.h>
-
- /* Returned by `time'. */
- typedef __time_t time_t;
-
- #endif /* time_t not defined and <time.h> or need time_t. */
- #undef __need_time_t
-
-
- #ifdef _TIME_H
- /* Used by other time functions. */
- struct tm
- {
- int tm_sec; /* Seconds. [0-61] (2 leap seconds) */
- int tm_min; /* Minutes. [0-59] */
- int tm_hour; /* Hours. [0-23] */
- int tm_mday; /* Day. [1-31] */
- int tm_mon; /* Month. [0-11] */
- int tm_year; /* Year - 1900. */
- int tm_wday; /* Day of week. [0-6] */
- int tm_yday; /* Days in year.[0-365] */
- int tm_isdst; /* DST. [-1/0/1]*/
- long int tm_gmtoff; /* Seconds west of UTC. */
- __const char *tm_zone; /* Timezone abbreviation. */
- };
-
- #endif /* <time.h> included. */
-
-
- #ifdef _TIME_H
- /* Time used by the program so far (user time + system time).
- The result / CLOCKS_PER_SECOND is program time in seconds. */
- extern clock_t clock __P ((void));
-
- /* Return the current time and put it in *TIMER if TIMER is not NULL. */
- extern time_t time __P ((time_t *__timer));
-
- /* Return the difference between TIME1 and TIME0. */
- extern __CONSTVALUE double difftime __P ((time_t __time1, time_t __time0));
-
- /* Return the `time_t' representation of TP and normalize TP. */
- extern time_t mktime __P ((struct tm *__tp));
-
- /* Subroutine of `mktime'. Return the `time_t' representation of TP and
- normalize TP, given that a `struct tm *' maps to a `time_t' as performed
- by FUNC. */
- extern time_t _mktime_internal __P ((struct tm *__tp,
- struct tm *(*__func) (const time_t *)));
-
-
- /* Format TP into S according to FORMAT.
- Write no more than MAXSIZE characters and return the number
- of characters written, or 0 if it would exceed MAXSIZE. */
- extern size_t strftime __P ((char *__s, size_t __maxsize,
- __const char *__format, __const struct tm *__tp));
-
-
- /* Return the `struct tm' representation of *TIMER
- in Universal Coordinated Time (aka Greenwich Mean Time). */
- extern struct tm *gmtime __P ((__const time_t *__timer));
-
- /* Return the `struct tm' representation
- of *TIMER in the local timezone. */
- extern struct tm *localtime __P ((__const time_t *__timer));
-
- /* Return the `struct tm' representation of *TIMER,
- offset OFFSET seconds east of Universal Coordinated Time. */
- extern struct tm *__offtime __P ((__const time_t *__timer,
- long int __offset));
-
- /* Return a string of the form "Day Mon dd hh:mm:ss yyyy\n"
- that is the representation of TP in this format. */
- extern char *asctime __P ((__const struct tm *__tp));
-
- /* Equivalent to `asctime(localtime(timer))'. */
- extern char *ctime __P ((__const time_t *__timer));
-
-
- /* Defined in localtime.c. */
- extern char *__tzname[2]; /* Current timezone names. */
- extern int __daylight; /* If it is daylight savings time. */
- extern long int __timezone; /* Seconds west of UTC. */
-
- /* Set time conversion information from the TZ environment variable.
- If TZ is not defined, a locale-dependent default is used. */
- extern void __tzset __P ((void));
-
- #ifdef __USE_POSIX
- /* Same as above. */
- extern char *tzname[2];
-
- /* Return the maximum length of a timezone name.
- This is what `sysconf (_SC_TZNAME_MAX)' does. */
- extern long int __tzname_max __P ((void));
-
- extern void tzset __P ((void));
- #ifdef __OPTIMIZE__
- #define tzset() __tzset()
- #endif /* Optimizing. */
- #endif
-
- #ifdef __USE_SVID
- extern int daylight;
- extern long int timezone;
-
- /* Set the system time to *WHEN.
- This call is restricted to the superuser. */
- extern int stime __P ((__const time_t *__when));
- #endif
-
-
- /* Nonzero if YEAR is a leap year (every 4 years,
- except every 100th isn't, and every 400th is). */
- #define __isleap(year) \
- ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
-
-
- #ifdef __USE_MISC
- /* Miscellaneous functions many Unices inherited from the public domain
- localtime package. These are included only for compatibility. */
-
- /* Like `mktime', but for TP represents Universal Time, not local time. */
- extern time_t timegm __P ((struct tm *__tp));
-
- /* Another name for `mktime'. */
- extern time_t timelocal __P ((struct tm *__tp));
-
- /* Return the number of days in YEAR. */
- extern int dysize __P ((int __year));
- #endif
-
-
- __END_DECLS
-
- #endif /* <time.h> included. */
-
- #endif /* <time.h> not already included. */
-