Notice: Use of undefined constant INF - assumed 'INF' in /in/UCIgS on line 2
Notice: Use of undefined constant INF - assumed 'INF' in /in/UCIgS on line 2
bool(true)
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/UCIgS on line 3
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/UCIgS on line 3
bool(true)