Fix mktime localtime offset confusion
[glibc.git] / include / time.h
blobe30c5fc3b1d13732bf68077b59bcecafbefe0886
1 #ifndef _TIME_H
2 #include <time/time.h>
4 #ifndef _ISOMAC
5 # include <bits/types/locale_t.h>
7 extern __typeof (strftime_l) __strftime_l;
8 libc_hidden_proto (__strftime_l)
9 extern __typeof (strptime_l) __strptime_l;
11 libc_hidden_proto (time)
12 libc_hidden_proto (asctime)
13 libc_hidden_proto (mktime)
14 libc_hidden_proto (timelocal)
15 libc_hidden_proto (localtime)
16 libc_hidden_proto (strftime)
17 libc_hidden_proto (strptime)
19 extern __typeof (clock_getres) __clock_getres;
20 extern __typeof (clock_gettime) __clock_gettime;
21 libc_hidden_proto (__clock_gettime)
22 extern __typeof (clock_settime) __clock_settime;
23 extern __typeof (clock_nanosleep) __clock_nanosleep;
24 extern __typeof (clock_getcpuclockid) __clock_getcpuclockid;
26 /* Now define the internal interfaces. */
27 struct tm;
29 /* time_t variant for representing time zone data, independent of
30 time_t. */
31 typedef __int64_t internal_time_t;
33 /* Defined in mktime.c. */
34 extern const unsigned short int __mon_yday[2][13] attribute_hidden;
36 /* Defined in localtime.c. */
37 extern struct tm _tmbuf attribute_hidden;
39 /* Defined in tzset.c. */
40 extern char *__tzstring (const char *string) attribute_hidden;
42 extern int __use_tzfile attribute_hidden;
44 extern void __tzfile_read (const char *file, size_t extra,
45 char **extrap) attribute_hidden;
46 extern void __tzfile_compute (internal_time_t timer, int use_localtime,
47 long int *leap_correct, int *leap_hit,
48 struct tm *tp) attribute_hidden;
49 extern void __tzfile_default (const char *std, const char *dst,
50 long int stdoff, long int dstoff)
51 attribute_hidden;
52 extern void __tzset_parse_tz (const char *tz) attribute_hidden;
53 extern void __tz_compute (time_t timer, struct tm *tm, int use_localtime)
54 __THROW attribute_hidden;
56 /* Subroutine of `mktime'. Return the `time_t' representation of TP and
57 normalize TP, given that a `struct tm *' maps to a `time_t' as performed
58 by FUNC. Record next guess for localtime-gmtime offset in *OFFSET. */
59 extern time_t __mktime_internal (struct tm *__tp,
60 struct tm *(*__func) (const time_t *,
61 struct tm *),
62 long int *__offset) attribute_hidden;
63 extern struct tm *__localtime_r (const time_t *__timer,
64 struct tm *__tp) attribute_hidden;
66 extern struct tm *__gmtime_r (const time_t *__restrict __timer,
67 struct tm *__restrict __tp);
68 libc_hidden_proto (__gmtime_r)
70 /* Compute the `struct tm' representation of *T,
71 offset OFFSET seconds east of UTC,
72 and store year, yday, mon, mday, wday, hour, min, sec into *TP.
73 Return nonzero if successful. */
74 extern int __offtime (const time_t *__timer,
75 long int __offset,
76 struct tm *__tp) attribute_hidden;
78 extern char *__asctime_r (const struct tm *__tp, char *__buf)
79 attribute_hidden;
80 extern void __tzset (void) attribute_hidden;
82 /* Prototype for the internal function to get information based on TZ. */
83 extern struct tm *__tz_convert (const time_t *timer, int use_localtime,
84 struct tm *tp) attribute_hidden;
86 extern int __nanosleep (const struct timespec *__requested_time,
87 struct timespec *__remaining);
88 hidden_proto (__nanosleep)
89 extern int __getdate_r (const char *__string, struct tm *__resbufp)
90 attribute_hidden;
93 /* Determine CLK_TCK value. */
94 extern int __getclktck (void) attribute_hidden;
97 /* strptime support. */
98 extern char * __strptime_internal (const char *rp, const char *fmt,
99 struct tm *tm, void *statep,
100 locale_t locparam) attribute_hidden;
102 extern double __difftime (time_t time1, time_t time0);
105 /* Use in the clock_* functions. Size of the field representing the
106 actual clock ID. */
107 #define CLOCK_IDFIELD_SIZE 3
109 #endif
110 #endif