clock_nanosleep
int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *);
return (INTERPOS_SYS(clock_nanosleep, clock_id, flags, rqtp, rmtp));
SLOT(clock_nanosleep, __sys_clock_nanosleep),
SLOT(clock_nanosleep);
(void)clock_nanosleep(CLOCK_MONOTONIC_FAST, 0, &ts, NULL);