45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
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* time.h - date and time
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*/
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/* $Id$ */
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#ifndef _TIME_H
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#define _TIME_H
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#include <stddef.h>
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#include <sys/types.h>
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#define CLOCKS_PER_SEC 1000000
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typedef unsigned long clock_t; /* type returned by real time clock */
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struct tm {
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int tm_sec; /* seconds after the minute - [0, 59] */
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int tm_min; /* minutes after the hour - [0, 59] */
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int tm_hour; /* hours since midnight - [0, 23] */
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int tm_mday; /* day of the month - [1, 31] */
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int tm_mon; /* months since January - [0, 11] */
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int tm_year; /* years since 1900 */
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int tm_wday; /* days since Sunday - [0, 6] */
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int tm_yday; /* days since January 1 - [0, 365] */
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int tm_isdst; /* Daylight Saving Time flag */
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};
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/* Not a system call; this calls gettimeofday() or times() to do the work */
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extern clock_t clock(void);
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extern double difftime(time_t _time1, time_t _time0);
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extern time_t mktime(struct tm *_timeptr);
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extern time_t time(time_t *_timeptr);
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extern char* asctime(const struct tm *_timeptr);
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extern char* ctime(const time_t *_timer);
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extern struct tm* gmtime(const time_t *_timer);
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extern struct tm* localtime(const time_t *_timer);
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extern size_t strftime(char *_s, size_t _maxsize,
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const char *_format,
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const struct tm *_timeptr);
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/* Extensions not in the standard */
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#define ctime(t) asctime(localtime(t))
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#endif
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