#ifndef TIME_H_
#define TIME_H_

#include <stddef.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/_time.h>

#define CLOCKS_PER_SEC  __SYS_CLOCKS_PER_SEC
#define CLOCK_REALTIME  __SYS_CLOCK_REALTIME
#define CLOCK_MONOTONIC __SYS_CLOCK_MONOTONIC

struct timespec {
    time_t tv_sec;
    long tv_nsec;
};

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;
};

extern clock_t clock(void);
extern time_t time(time_t *p);

extern int nanosleep(const struct timespec *req, struct timespec *rem);

extern struct tm *gmtime(const time_t *timer);
extern struct tm *localtime(const time_t *timer);
extern time_t mktime(struct tm *timeptr);
extern size_t strftime(char *str, size_t max, const char *format, const struct tm *timeptr);

extern void tzset(void);

extern int clock_getres(clockid_t clk_id, struct timespec *res);
extern int clock_gettime(clockid_t clk_id, struct timespec *tp);
extern int clock_settime(clockid_t clk_id, const struct timespec *tp);

#endif