1--TEST--
2Test is_nan() - wrong params test is_nan()
3--FILE--
4<?php
5is_nan();
6is_nan(23,2,true);
7?>
8--EXPECTF--
9Warning: is_nan() expects exactly 1 parameter, 0 given in %s on line 2
10
11Warning: is_nan() expects exactly 1 parameter, 3 given in %s on line 3
12