timerisset
timerisset(&lwp->lwp_timer[ITIMER_VIRTUAL].it_value) &&
if (timerisset(&lwp->lwp_timer[ITIMER_PROF].it_value) &&
if (timerisset(&aitv.it_value)) {
(itimerfix(&aitv.it_interval, min) && timerisset(&aitv.it_value)))
if (timerisset(&aitv.it_value)) {
if (!timerisset(&aitv.it_value)) {
if (!timerisset(intervalp)) {
if (timerisset(&itp->it_value))
if (timerisset(&itp->it_interval)) {