Zend: Add new test for coercions from NAN

Author: Girgias

Zend/tests/type_coercion/nan_to_other.phpt

@@ -0,0 +1,67 @@
+--TEST--
+NAN coerced to other types
+--FILE--
+<?php
+
+$nan = fdiv(0, 0);
+var_dump($nan);
+
+function implicit_to_bool(bool $v) {
+    var_dump($v);
+}
+function implicit_to_string(string $v) {
+    var_dump($v);
+}
+
+implicit_to_bool($nan);
+implicit_to_string($nan);
+
+var_dump((int) $nan);
+var_dump((bool) $nan);
+var_dump((string) $nan);
+var_dump((array) $nan);
+var_dump((object) $nan);
+
+$types = [
+    'null',
+    'bool',
+    'int',
+    'string',
+    'array',
+    'object',
+];
+
+foreach ($types as $type) {
+    $nan = fdiv(0, 0);
+    settype($nan, $type);
+    var_dump($nan);
+}
+
+?>
+--EXPECTF--
+float(NAN)
+bool(true)
+string(3) "NAN"
+int(0)
+bool(true)
+string(3) "NAN"
+array(1) {
+  [0]=>
+  float(NAN)
+}
+object(stdClass)#%d (1) {
+  ["scalar"]=>
+  float(NAN)
+}
+NULL
+bool(true)
+int(0)
+string(3) "NAN"
+array(1) {
+  [0]=>
+  float(NAN)
+}
+object(stdClass)#%d (1) {
+  ["scalar"]=>
+  float(NAN)
+}