sem_reltimedwait_np
int sem_reltimedwait_np(sem_t *_RESTRICT_KYWD,
err = sem_reltimedwait_np(&mqhp->mq_notfull, timeout);
err = sem_reltimedwait_np(&mqhp->mq_notempty, timeout);
if (sem_reltimedwait_np(sem, specs[i]) != 0) {
if (sem_reltimedwait_np(sem, specs[i]) != -1 ||
p = sem_reltimedwait_np(sem, &clock_to_100ms);