| /* Copyright (C) 1991,92,93,94,95,96,97,98 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 Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* |
| * ISO C Standard: 4.12 DATE and TIME <time.h> |
| */ |
| |
| #ifndef _TIME_H |
| |
| #if (! defined __need_time_t && !defined __need_clock_t && \ |
| ! defined __need_timespec) |
| # 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 |
| |
| /* This defines CLOCKS_PER_SEC, which is the number of processor clock |
| ticks per second. */ |
| # include <bits/time.h> |
| |
| /* This is the obsolete POSIX.1-1988 name for the same constant. */ |
| # ifdef __USE_POSIX |
| # ifndef CLK_TCK |
| # define CLK_TCK CLOCKS_PER_SEC |
| # endif |
| # endif |
| |
| #endif /* <time.h> included. */ |
| |
| |
| #if !defined __clock_t_defined && (defined _TIME_H || defined __need_clock_t) |
| # define __clock_t_defined 1 |
| |
| # include <bits/types.h> |
| |
| /* Returned by `clock'. */ |
| typedef __clock_t 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 <bits/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 |
| |
| |
| #if !defined __timespec_defined && \ |
| ((defined _TIME_H && defined __USE_POSIX) || defined __need_timespec) |
| # define __timespec_defined 1 |
| |
| /* POSIX.4 structure for a time value. This is like a `struct timeval' but |
| has nanoseconds instead of microseconds. */ |
| struct timespec |
| { |
| long int tv_sec; /* Seconds. */ |
| long int tv_nsec; /* Nanoseconds. */ |
| }; |
| |
| #endif /* timespec not defined and <time.h> or need timespec. */ |
| #undef __need_timespec |
| |
| |
| /* Value used for `tm_' field in `struct tmx' if describing the local |
| time. */ |
| #define _LOCALTIME (0x7fffffff) |
| |
| /* Value used for `tm_leapsecond' field if the number cannot be computed. */ |
| #define _NO_LEAP_SECONDS (0x7fffffff) |
| |
| |
| #ifdef _TIME_H |
| /* Used by other time functions. */ |
| struct tm |
| { |
| int tm_sec; /* Seconds. [0-60] (1 leap second) */ |
| 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]*/ |
| |
| # ifdef __USE_BSD |
| long int tm_gmtoff; /* Seconds east of UTC. */ |
| __const char *tm_zone; /* Timezone abbreviation. */ |
| # else |
| long int __tm_gmtoff; /* Seconds east of UTC. */ |
| __const char *__tm_zone; /* Timezone abbreviation. */ |
| # endif |
| }; |
| |
| #ifdef __USE_ISOC9X |
| /* Extended form of `struct tm' defined in ISO C 9X. */ |
| struct tmx |
| { |
| int tm_sec; /* Seconds. [0-60] (1 leap second) */ |
| 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]*/ |
| |
| # ifdef __USE_BSD |
| long int tm_gmtoff; /* Seconds east of UTC. */ |
| # else |
| long int __tm_gmtoff; /* Seconds east of UTC. */ |
| # endif |
| __const char *__tm_zonestr; /* Timezone abbreviation. */ |
| |
| int tm_version; /* Version number. */ |
| int tm_zone; /* Minutes offset from UTC [-1439-1439] */ |
| int tm_leapsecs; /* Number of leap seconds applied. */ |
| void *tm_ext; /* Extension block. */ |
| size_t tm_extlen; /* Size of the extension block. */ |
| }; |
| #endif |
| |
| |
| /* 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)); |
| |
| #ifdef __USE_ISOC9X |
| /* Return the `time_t' representation of TP and normalize TP, taking |
| account for the extra members in `struct tmx'. */ |
| extern time_t mkxtime __P ((struct tmx *__tp)); |
| #endif |
| |
| |
| /* 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 *__restrict __s, size_t __maxsize, |
| __const char *__restrict __format, |
| __const struct tm *__restrict __tp)); |
| |
| #ifdef __USE_ISOC9X |
| /* 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 strfxtime __P ((char *__restrict __s, size_t __maxsize, |
| __const char *__restrict __format, |
| __const struct tmx *__restrict __tp)); |
| |
| |
| #endif |
| |
| # ifdef __USE_XOPEN |
| /* Parse S according to FORMAT and store binary time information in TP. |
| The return value is a pointer to the first unparsed character in S. */ |
| extern char *strptime __P ((__const char *__s, __const char *__fmt, |
| struct tm *__tp)); |
| # endif |
| |
| |
| /* 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)); |
| |
| # if defined __USE_POSIX || defined __USE_MISC |
| /* Return the `struct tm' representation of *TIMER in UTC, |
| using *TP to store the result. */ |
| extern struct tm *__gmtime_r __P ((__const time_t *__timer, |
| struct tm *__tp)); |
| extern struct tm *gmtime_r __P ((__const time_t *__timer, |
| struct tm *__tp)); |
| |
| /* Return the `struct tm' representation of *TIMER in local time, |
| using *TP to store the result. */ |
| extern struct tm *localtime_r __P ((__const time_t *__timer, |
| struct tm *__tp)); |
| # endif /* POSIX or misc */ |
| |
| /* 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)); |
| |
| # if defined __USE_POSIX || defined __USE_MISC |
| /* Reentrant versions of the above functions. */ |
| |
| /* Return in BUF 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_r __P ((__const struct tm *__tp, char *__buf)); |
| |
| /* Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'. */ |
| extern char *ctime_r __P ((__const time_t *__timer, char *__buf)); |
| # endif /* POSIX or misc */ |
| |
| |
| /* Defined in localtime.c. */ |
| extern char *__tzname[2]; /* Current timezone names. */ |
| extern int __daylight; /* If daylight-saving time is ever in use. */ |
| extern long int __timezone; /* Seconds west of UTC. */ |
| |
| |
| # ifdef __USE_POSIX |
| /* Same as above. */ |
| extern char *tzname[2]; |
| |
| /* 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)); |
| # endif |
| |
| # if defined __USE_SVID || defined __USE_XOPEN |
| extern int daylight; |
| extern long int timezone; |
| # endif |
| |
| # ifdef __USE_SVID |
| /* 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 |
| |
| |
| # ifdef __USE_POSIX199309 |
| /* Pause execution for a number of nanoseconds. */ |
| extern int nanosleep __P ((__const struct timespec *__requested_time, |
| struct timespec *__remaining)); |
| # endif |
| |
| |
| # ifdef __USE_XOPEN_EXTENDED |
| /* Set to one of the following values to indicate an error. |
| 1 the DATEMSK environment variable is null or undefined, |
| 2 the template file cannot be opened for reading, |
| 3 failed to get file status information, |
| 4 the template file is not a regular file, |
| 5 an error is encountered while reading the template file, |
| 6 memory allication failed (not enough memory available), |
| 7 there is no line in the template that matches the input, |
| 8 invalid input specification Example: February 31 or a time is |
| specified that can not be represented in a time_t (representing |
| the time in seconds since 00:00:00 UTC, January 1, 1970) */ |
| extern int getdate_err; |
| |
| /* Parse the given string as a date specification and return a value |
| representing the value. The templates from the file identified by |
| the environment variable DATEMSK are used. In case of an error |
| `getdate_err' is set. */ |
| extern struct tm *getdate __P ((__const char *__string)); |
| # endif |
| |
| # ifdef __USE_GNU |
| /* Since `getdate' is not reentrant because of the use of `getdate_err' |
| and the static buffer to return the result in, we provide a thread-safe |
| variant. The functionality is the same. The result is returned in |
| the buffer pointed to by RESBUFP and in case of an error the return |
| value is != 0 with the same values as given above for `getdate_err'. */ |
| extern int getdate_r __P ((__const char *__string, struct tm *__resbufp)); |
| # endif |
| |
| |
| __END_DECLS |
| |
| #endif /* <time.h> included. */ |
| |
| #endif /* <time.h> not already included. */ |