RIOT/sys/timex.c

#include <timex.h>

timex_t timex_add(const timex_t a, const timex_t b) {
    timex_t result;
    result.seconds = a.seconds + b.seconds;
    result.microseconds = a.microseconds + b.microseconds;

    if (result.microseconds < a.microseconds) {
        result.seconds++;
    }

/*    if (result.microseconds > 1000000) {
        result.microseconds -= 1000000;
        result.seconds++;
    }
*/
    return result;
}

void timex_normalize(timex_t *time) {
    time->seconds += (time->microseconds / 1000000);
    time->microseconds %= 1000000;
}

timex_t timex_set(uint32_t seconds, uint32_t microseconds) {
    timex_t result;
    result.seconds = seconds;
    result.microseconds = microseconds;

    return result;
}

timex_t timex_sub(const timex_t a, const timex_t b) {
    timex_t result;
    result.seconds = a.seconds - b.seconds;
    result.microseconds = a.microseconds - b.microseconds;

    return result;
}

int timex_cmp(const timex_t a, const timex_t b) {
    if (a.seconds < b.seconds) return -1;
    if (a.seconds == b.seconds) {
        if (a.microseconds < b.microseconds) return -1;
        if (a.microseconds == b.microseconds) return 0;
    }
    return 1;
}