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/* Copyright (C) 1991-1999,2000,2001,2002,2003 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

/* 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 __UCLIBC_HAS_TM_EXTENSIONS__

#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

#endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */

};

__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;

#ifdef __UCLIBC_HAS_FLOATS__

/* Return the difference between TIME1 and TIME0.  */

extern double difftime (time_t __time1, time_t __time0)

     __THROW __attribute__ ((__const__));

#endif /* __UCLIBC_HAS_FLOATS__ */

/* 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 __UCLIBC_HAS_XLOCALE__

# ifdef __USE_GNU

/* 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;

extern char *strptime_l (__const char *__restrict __s,

                         __const char *__restrict __fmt, struct tm *__tp,

                         __locale_t __loc) __THROW;

extern size_t __strftime_l (char *__restrict __s, size_t __maxsize,

                                                        __const char *__restrict __format,

                                                        __const struct tm *__restrict __tp,

                                                        __locale_t __loc) __THROW;

extern char *__strptime_l (__const char *__restrict __s,

                                                   __const char *__restrict __fmt, struct tm *__tp,

                                                   __locale_t __loc) __THROW;

# endif

#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.  */

#if 0

/* Like `mktime', but for TP represents Universal Time, not local time.  */

extern time_t timegm (struct tm *__tp) __THROW;

#endif

/* 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.  */