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Diffstat (limited to 'time/time.h')
| -rw-r--r-- | time/time.h | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/time/time.h b/time/time.h new file mode 100644 index 0000000000..7070881949 --- /dev/null +++ b/time/time.h @@ -0,0 +1,204 @@ +/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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 double difftime __P ((time_t __time1, time_t __time0)) + __attribute__ ((__const__)); + +/* 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. */ |