Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 4
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 4
bool(false)
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 5
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 5
bool(true)
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 6
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 6
bool(false)
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 7
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/k9fp0 on line 7
bool(true)