#pragma once

#include <stddef.h>

typedef long int time_t;
typedef int clockid_t;

struct timespec {
    time_t tv_sec;
    long tv_nsec;
};

#define CLOCK_REALTIME  0
#define CLOCK_MONOTONIC 1

struct tm {
    int tm_sec;
    int tm_min;
    int tm_hour;
    int tm_mday;
    int tm_mon;
    int tm_year;
    int tm_wday;
    int tm_yday;
    int tm_isdst;
};

time_t time(time_t *timer);
int nanosleep(const struct timespec *req, struct timespec *rem);
int clock_gettime(clockid_t clock_id, struct timespec *tp);

time_t mktime(struct tm *tm);

struct tm *gmtime_r(const time_t *timer, struct tm *result);
struct tm *gmtime(const time_t *timer);
struct tm *localtime_r(const time_t *timer, struct tm *result);
struct tm *localtime(const time_t *timer);

size_t strftime(char *str, size_t max, const char *format, const struct tm *tm);

char *asctime(const struct tm *time);
char *ctime(const time_t *timer);