Function duration

examples/client/c/src/clockbound_now.c:81–91

* Helper function to calculate a time interval between two timestamps held in a struct timespec. */

 * Helper function to calculate a time interval between two timestamps held in a struct timespec.
 */
double duration(struct timespec start, struct timespec end) {
        int secs = end.tv_sec - start.tv_sec;
        int nsecs = (int) end.tv_nsec - (int) start.tv_nsec;

        if (nsecs < 0) {
                nsecs += 1000000000;
                secs--;
        }

        return  (double) secs + (double) nsecs / 1000000000;
}

int main(int argc, char *argv[]) {
        clockbound_ctx *ctx;