ladybird/Libraries/LibC/time.h
howar6hill ae233c1e82 LibC: Implement time formatting functions, partially support timezone
Also fix a bug in mktime() caused by forgetting to check if the present year
is a leap year.
2020-03-06 10:32:48 +01:00

86 lines
2.9 KiB
C

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <sys/cdefs.h>
#include <sys/types.h>
__BEGIN_DECLS
struct tm {
int tm_sec; /* Seconds (0-60) */
int tm_min; /* Minutes (0-59) */
int tm_hour; /* Hours (0-23) */
int tm_mday; /* Day of the month (1-31) */
int tm_mon; /* Month (0-11) */
int tm_year; /* Year - 1900 */
int tm_wday; /* Day of the week (0-6, Sunday = 0) */
int tm_yday; /* Day in the year (0-365, 1 Jan = 0) */
int tm_isdst; /* Daylight saving time */
};
extern long timezone; /* The difference in seconds between UTC and local time */
extern long altzone;
extern char* tzname[2];
extern int daylight;
typedef uint32_t clock_t;
typedef int64_t time_t;
struct tm* localtime(const time_t*);
struct tm* gmtime(const time_t*);
time_t mktime(struct tm*);
time_t time(time_t*);
char* ctime(const time_t*);
void tzset();
char* asctime(const struct tm*);
#define CLOCKS_PER_SEC 1000
clock_t clock();
struct timespec {
time_t tv_sec;
long tv_nsec;
};
typedef int clockid_t;
#define CLOCK_MONOTONIC 1
#define TIMER_ABSTIME 99
int clock_gettime(clockid_t, struct timespec*);
int clock_nanosleep(clockid_t, int flags, const struct timespec* requested_sleep, struct timespec* remaining_sleep);
int clock_getres(clockid_t, struct timespec* result);
struct tm* gmtime_r(const time_t* timep, struct tm* result);
struct tm* localtime_r(const time_t* timep, struct tm* result);
double difftime(time_t, time_t);
size_t strftime(char* s, size_t max, const char* format, const struct tm*);
#define difftime(t1, t0) (double)(t1 - t0)
__END_DECLS