| 1 | /* The <time.h> header is used by the procedures that deal with time.
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| 2 | * Handling time is surprisingly complicated, what with GMT, local time
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| 3 | * and other factors. Although the Bishop of Ussher (1581-1656) once
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| 4 | * calculated that based on the Bible, the world began on 12 Oct. 4004 BC
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| 5 | * at 9 o'clock in the morning, in the UNIX world time begins at midnight,
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| 6 | * 1 Jan. 1970 GMT. Before that, all was NULL and (void).
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| 7 | */
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| 8 |
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| 9 | #ifndef _TIME_H
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| 10 | #define _TIME_H
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| 11 |
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| 12 | #define CLOCKS_PER_SEC 60 /* MINIX always uses 60 Hz, even in Europe */
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| 13 |
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| 14 | #ifdef _POSIX_SOURCE
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| 15 | #define CLK_TCK CLOCKS_PER_SEC /* obsolescent mame for CLOCKS_PER_SEC */
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| 16 | #endif
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| 17 |
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| 18 | #define NULL ((void *)0)
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| 19 |
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| 20 | #ifndef _SIZE_T
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| 21 | #define _SIZE_T
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| 22 | typedef unsigned int size_t;
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| 23 | #endif
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| 24 |
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| 25 | #ifndef _TIME_T
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| 26 | #define _TIME_T
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| 27 | typedef long time_t; /* time in sec since 1 Jan 1970 0000 GMT */
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| 28 | #endif
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| 29 |
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| 30 | #ifndef _CLOCK_T
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| 31 | #define _CLOCK_T
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| 32 | typedef long clock_t; /* time in ticks since process started */
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| 33 | #endif
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| 34 |
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| 35 | struct tm {
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| 36 | int tm_sec; /* seconds after the minute [0, 59] */
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| 37 | int tm_min; /* minutes after the hour [0, 59] */
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| 38 | int tm_hour; /* hours since midnight [0, 23] */
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| 39 | int tm_mday; /* day of the month [1, 31] */
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| 40 | int tm_mon; /* months since January [0, 11] */
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| 41 | int tm_year; /* years since 1900 */
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| 42 | int tm_wday; /* days since Sunday [0, 6] */
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| 43 | int tm_yday; /* days since January 1 [0, 365] */
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| 44 | int tm_isdst; /* Daylight Saving Time flag */
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| 45 | };
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| 46 |
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| 47 | extern char *tzname[];
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| 48 |
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| 49 | /* Function Prototypes. */
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| 50 | #ifndef _ANSI_H
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| 51 | #include <ansi.h>
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| 52 | #endif
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| 53 |
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| 54 | _PROTOTYPE( clock_t clock, (void) );
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| 55 | _PROTOTYPE( double difftime, (time_t _time1, time_t _time0) );
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| 56 | _PROTOTYPE( time_t mktime, (struct tm *_timeptr) );
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| 57 | _PROTOTYPE( time_t time, (time_t *_timeptr) );
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| 58 | _PROTOTYPE( char *asctime, (const struct tm *_timeptr) );
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| 59 | _PROTOTYPE( char *ctime, (const time_t *_timer) );
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| 60 | _PROTOTYPE( struct tm *gmtime, (const time_t *_timer) );
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| 61 | _PROTOTYPE( struct tm *localtime, (const time_t *_timer) );
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| 62 | _PROTOTYPE( size_t strftime, (char *_s, size_t _max, const char *_fmt,
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| 63 | const struct tm *_timep) );
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| 64 |
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| 65 | #ifdef _POSIX_SOURCE
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| 66 | _PROTOTYPE( void tzset, (void) );
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| 67 | #endif
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| 68 |
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| 69 | #ifdef _MINIX
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| 70 | _PROTOTYPE( int stime, (time_t *_top) );
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| 71 | #endif
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| 72 |
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| 73 | extern long timezone;
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| 74 |
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| 75 | #endif /* _TIME_H */
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