/* Copyright (C) 1991-2003,2006,2009 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 Lesser General Public
	   License as published by the Free Software Foundation; either
	   version 2.1 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
	   Lesser General Public License for more details.
	
	   You should have received a copy of the GNU Lesser General Public
	   License along with the GNU C Library; if not, write to the Free
	   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	   02111-1307 USA.  */
	
	/*
	 *	ISO C99 Standard: 7.23 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>
	
	/* 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.  */
	# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
	#  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>
	
	__BEGIN_NAMESPACE_STD
	/* Returned by `clock'.  */
	typedef __clock_t clock_t;
	__END_NAMESPACE_STD
	#if defined __USE_XOPEN || defined __USE_POSIX || defined __USE_MISC
	__USING_NAMESPACE_STD(clock_t)
	#endif
	
	#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>
	
	__BEGIN_NAMESPACE_STD
	/* Returned by `time'.  */
	typedef __time_t time_t;
	__END_NAMESPACE_STD
	#if defined __USE_POSIX || defined __USE_MISC || defined __USE_SVID
	__USING_NAMESPACE_STD(time_t)
	#endif
	
	#endif /* time_t not defined and <time.h> or need time_t.  */
	#undef	__need_time_t
	
	#if !defined __clockid_t_defined && \
	   ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_clockid_t)
	# define __clockid_t_defined	1
	
	# include <bits/types.h>
	
	/* Clock ID used in clock and timer functions.  */
	typedef __clockid_t clockid_t;
	
	#endif /* clockid_t not defined and <time.h> or need clockid_t.  */
	#undef	__clockid_time_t
	
	#if !defined __timer_t_defined && \
	    ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_timer_t)
	# define __timer_t_defined	1
	
	# include <bits/types.h>
	
	/* Timer ID returned by `timer_create'.  */
	typedef __timer_t timer_t;
	
	#endif /* timer_t not defined and <time.h> or need timer_t.  */
	#undef	__need_timer_t
	
	
	#if !defined __timespec_defined &&				\
	    ((defined _TIME_H &&					\
	      (defined __USE_POSIX199309 || defined __USE_MISC)) ||	\
	      defined __need_timespec)
	# define __timespec_defined	1
	
	# include <bits/types.h>	/* This defines __time_t for us.  */
	
	/* POSIX.1b structure for a time value.  This is like a `struct timeval' but
	   has nanoseconds instead of microseconds.  */
	struct timespec
	  {
	    __time_t tv_sec;		/* Seconds.  */
	    long int tv_nsec;		/* Nanoseconds.  */
	  };
	
	#endif /* timespec not defined and <time.h> or need timespec.  */
	#undef	__need_timespec
	
	
	#ifdef	_TIME_H
	__BEGIN_NAMESPACE_STD
	/* 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
	};
	__END_NAMESPACE_STD
	#if defined __USE_XOPEN || defined __USE_POSIX || defined __USE_MISC
	__USING_NAMESPACE_STD(tm)
	#endif
	
	
	#ifdef __USE_POSIX199309
	/* POSIX.1b structure for timer start values and intervals.  */
	struct itimerspec
	  {
	    struct timespec it_interval;
	    struct timespec it_value;
	  };
	
	/* We can use a simple forward declaration.  */
	struct sigevent;
	
	#endif	/* POSIX.1b */
	
	#ifdef __USE_XOPEN2K
	# ifndef __pid_t_defined
	typedef __pid_t pid_t;
	#  define __pid_t_defined
	# endif
	#endif
	
	
	__BEGIN_NAMESPACE_STD
	/* 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 (void) __THROW;
	
	/* Return the current time and put it in *TIMER if TIMER is not NULL.  */
	extern time_t time (time_t *__timer) __THROW;
	
	/* Return the difference between TIME1 and TIME0.  */
	extern double difftime (time_t __time1, time_t __time0)
	     __THROW __attribute__ ((__const__));
	
	/* Return the `time_t' representation of TP and normalize TP.  */
	extern time_t mktime (struct tm *__tp) __THROW;
	
	
	/* 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 (char *__restrict __s, size_t __maxsize,
				__const char *__restrict __format,
				__const struct tm *__restrict __tp) __THROW;
	__END_NAMESPACE_STD
	
	# 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 (__const char *__restrict __s,
			       __const char *__restrict __fmt, struct tm *__tp)
	     __THROW;
	# endif
	
	# ifdef __USE_XOPEN2K8
	/* Similar to the two functions above but take the information from
	   the provided locale and not the global locale.  */
	# include <xlocale.h>
	
	extern size_t strftime_l (char *__restrict __s, size_t __maxsize,
				  __const char *__restrict __format,
				  __const struct tm *__restrict __tp,
				  __locale_t __loc) __THROW;
	# endif
	
	# ifdef __USE_GNU
	extern char *strptime_l (__const char *__restrict __s,
				 __const char *__restrict __fmt, struct tm *__tp,
				 __locale_t __loc) __THROW;
	# endif
	
	
	__BEGIN_NAMESPACE_STD
	/* Return the `struct tm' representation of *TIMER
	   in Universal Coordinated Time (aka Greenwich Mean Time).  */
	extern struct tm *gmtime (__const time_t *__timer) __THROW;
	
	/* Return the `struct tm' representation
	   of *TIMER in the local timezone.  */
	extern struct tm *localtime (__const time_t *__timer) __THROW;
	__END_NAMESPACE_STD
	
	# 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 (__const time_t *__restrict __timer,
				    struct tm *__restrict __tp) __THROW;
	
	/* Return the `struct tm' representation of *TIMER in local time,
	   using *TP to store the result.  */
	extern struct tm *localtime_r (__const time_t *__restrict __timer,
				       struct tm *__restrict __tp) __THROW;
	# endif	/* POSIX or misc */
	
	__BEGIN_NAMESPACE_STD
	/* 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 (__const struct tm *__tp) __THROW;
	
	/* Equivalent to `asctime (localtime (timer))'.  */
	extern char *ctime (__const time_t *__timer) __THROW;
	__END_NAMESPACE_STD
	
	# 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 (__const struct tm *__restrict __tp,
				char *__restrict __buf) __THROW;
	
	/* Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'.  */
	extern char *ctime_r (__const time_t *__restrict __timer,
			      char *__restrict __buf) __THROW;
	# 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 (void) __THROW;
	# 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 (__const time_t *__when) __THROW;
	# 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 (struct tm *__tp) __THROW;
	
	/* Another name for `mktime'.  */
	extern time_t timelocal (struct tm *__tp) __THROW;
	
	/* Return the number of days in YEAR.  */
	extern int dysize (int __year) __THROW  __attribute__ ((__const__));
	# endif
	
	
	# ifdef __USE_POSIX199309
	/* Pause execution for a number of nanoseconds.
	
	   This function is a cancellation point and therefore not marked with
	   __THROW.  */
	extern int nanosleep (__const struct timespec *__requested_time,
			      struct timespec *__remaining);
	
	
	/* Get resolution of clock CLOCK_ID.  */
	extern int clock_getres (clockid_t __clock_id, struct timespec *__res) __THROW;
	
	/* Get current value of clock CLOCK_ID and store it in TP.  */
	extern int clock_gettime (clockid_t __clock_id, struct timespec *__tp) __THROW;
	
	/* Set clock CLOCK_ID to value TP.  */
	extern int clock_settime (clockid_t __clock_id, __const struct timespec *__tp)
	     __THROW;
	
	#  ifdef __USE_XOPEN2K
	/* High-resolution sleep with the specified clock.
	
	   This function is a cancellation point and therefore not marked with
	   __THROW.  */
	extern int clock_nanosleep (clockid_t __clock_id, int __flags,
				    __const struct timespec *__req,
				    struct timespec *__rem);
	
	/* Return clock ID for CPU-time clock.  */
	extern int clock_getcpuclockid (pid_t __pid, clockid_t *__clock_id) __THROW;
	#  endif
	
	
	/* Create new per-process timer using CLOCK_ID.  */
	extern int timer_create (clockid_t __clock_id,
				 struct sigevent *__restrict __evp,
				 timer_t *__restrict __timerid) __THROW;
	
	/* Delete timer TIMERID.  */
	extern int timer_delete (timer_t __timerid) __THROW;
	
	/* Set timer TIMERID to VALUE, returning old value in OVLAUE.  */
	extern int timer_settime (timer_t __timerid, int __flags,
				  __const struct itimerspec *__restrict __value,
				  struct itimerspec *__restrict __ovalue) __THROW;
	
	/* Get current value of timer TIMERID and store it in VLAUE.  */
	extern int timer_gettime (timer_t __timerid, struct itimerspec *__value)
	     __THROW;
	
	/* Get expiration overrun for timer TIMERID.  */
	extern int timer_getoverrun (timer_t __timerid) __THROW;
	# 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.
	
	   This function is a possible cancellation points and therefore not
	   marked with __THROW.  */
	extern struct tm *getdate (__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'.
	
	   This function is not part of POSIX and therefore no official
	   cancellation point.  But due to similarity with an POSIX interface
	   or due to the implementation it is a cancellation point and
	   therefore not marked with __THROW.  */
	extern int getdate_r (__const char *__restrict __string,
			      struct tm *__restrict __resbufp);
	# endif
	
	__END_DECLS
	
	#endif /* <time.h> included.  */
	
	#endif /* <time.h> not already included.  */