Fix mktime localtime offset confusion

[thirdparty/glibc.git] / include / time.h

#ifndef _TIME_H
#include <time/time.h>

#ifndef _ISOMAC
# include <bits/types/locale_t.h>

extern __typeof (strftime_l) __strftime_l;
libc_hidden_proto (__strftime_l)
extern __typeof (strptime_l) __strptime_l;

libc_hidden_proto (time)
libc_hidden_proto (asctime)
libc_hidden_proto (mktime)
libc_hidden_proto (timelocal)
libc_hidden_proto (localtime)
libc_hidden_proto (strftime)
libc_hidden_proto (strptime)

extern __typeof (clock_getres) __clock_getres;
extern __typeof (clock_gettime) __clock_gettime;
libc_hidden_proto (__clock_gettime)
extern __typeof (clock_settime) __clock_settime;
extern __typeof (clock_nanosleep) __clock_nanosleep;
extern __typeof (clock_getcpuclockid) __clock_getcpuclockid;

/* Now define the internal interfaces.  */
struct tm;

/* time_t variant for representing time zone data, independent of
   time_t.  */
typedef __int64_t internal_time_t;

/* Defined in mktime.c.  */
extern const unsigned short int __mon_yday[2][13] attribute_hidden;

/* Defined in localtime.c.  */
extern struct tm _tmbuf attribute_hidden;

/* Defined in tzset.c.  */
extern char *__tzstring (const char *string) attribute_hidden;

extern int __use_tzfile attribute_hidden;

extern void __tzfile_read (const char *file, size_t extra,
			   char **extrap) attribute_hidden;
extern void __tzfile_compute (internal_time_t timer, int use_localtime,
			      long int *leap_correct, int *leap_hit,
			      struct tm *tp) attribute_hidden;
extern void __tzfile_default (const char *std, const char *dst,
			      long int stdoff, long int dstoff)
  attribute_hidden;
extern void __tzset_parse_tz (const char *tz) attribute_hidden;
extern void __tz_compute (time_t timer, struct tm *tm, int use_localtime)
  __THROW attribute_hidden;

/* 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.  Record next guess for localtime-gmtime offset in *OFFSET.  */
extern time_t __mktime_internal (struct tm *__tp,
				 struct tm *(*__func) (const time_t *,
						       struct tm *),
				 long int *__offset) attribute_hidden;
extern struct tm *__localtime_r (const time_t *__timer,
				 struct tm *__tp) attribute_hidden;

extern struct tm *__gmtime_r (const time_t *__restrict __timer,
			      struct tm *__restrict __tp);
libc_hidden_proto (__gmtime_r)

/* Compute the `struct tm' representation of *T,
   offset OFFSET seconds east of UTC,
   and store year, yday, mon, mday, wday, hour, min, sec into *TP.
   Return nonzero if successful.  */
extern int __offtime (const time_t *__timer,
		      long int __offset,
		      struct tm *__tp) attribute_hidden;

extern char *__asctime_r (const struct tm *__tp, char *__buf)
  attribute_hidden;
extern void __tzset (void) attribute_hidden;

/* Prototype for the internal function to get information based on TZ.  */
extern struct tm *__tz_convert (const time_t *timer, int use_localtime,
				struct tm *tp) attribute_hidden;

extern int __nanosleep (const struct timespec *__requested_time,
			struct timespec *__remaining);
hidden_proto (__nanosleep)
extern int __getdate_r (const char *__string, struct tm *__resbufp)
  attribute_hidden;


/* Determine CLK_TCK value.  */
extern int __getclktck (void) attribute_hidden;


/* strptime support.  */
extern char * __strptime_internal (const char *rp, const char *fmt,
				   struct tm *tm, void *statep,
				   locale_t locparam) attribute_hidden;

extern double __difftime (time_t time1, time_t time0);


/* Use in the clock_* functions.  Size of the field representing the
   actual clock ID.  */
#define CLOCK_IDFIELD_SIZE	3

#endif
#endif