// posix version definition to use clock_gettime
#ifndef _XOPEN_SOURCE 
    #if __STDC_VERSION__ >= 199901L
        #define _XOPEN_SOURCE 600
    #else
        #define _XOPEN_SOURCE 500
    #endif
#endif

#include "tlibc/time.h"
#include <time.h>
#include <assert.h>

#define K 1000
#define M 1000000
#define G 1000000000

nsec_t getTimeNsec(){
    struct timespec t;
    assert(clock_gettime(CLOCK_REALTIME, &t) == 0);
    u64 n = t.tv_sec * G + t.tv_nsec;
    return n;
}

usec_t getTimeUsec(){
    struct timespec t;
    assert(clock_gettime(CLOCK_REALTIME, &t) == 0);
    u64 n = t.tv_sec * M + t.tv_nsec / K;
    return n;
}

void sleepNsec(nsec_t time){
    struct timespec t = {
        .tv_sec = time / G,
        .tv_nsec = time % G
    };
    assert(nanosleep(&t, NULL) == 0);
}

void sleepUsec(usec_t time){
    sleepNsec(time * K);
}

void sleepMsec(msec_t time){
    sleepNsec(time * M);
}