ts_min
return ts_min(entry->expiration, entry->pw_expiration);
times->endtime = ts_min(htimes->renew_till,
until = ts_min(till, endtime);
rtime = ts_min(rtime, tgt->times.renew_till);
rtime = ts_min(rtime, ts_incr(times->starttime, max_rlife));
times->endtime = ts_min(ts_incr(now, life), times->endtime);
times->renew_till = ts_min(ts_incr(now, rlife), times->renew_till);