printt
printt("real", NSEC_TO_TICK_ROUNDUP(timediff));
printt("user", buffer.tms_cutime - obuffer.tms_cutime);
printt("sys ", buffer.tms_cstime - obuffer.tms_cstime);
void printt(char *, hrtime_t);
printt("real", (after-before));
printt("user", buffer.tms_cutime);
printt("sys ", buffer.tms_cstime);
static void printt(char *, clock_t);