_isnan seems to be supported on Win32, add an appropiate macro.

diff --git a/Zend/zend_config.w32.h b/Zend/zend_config.w32.h
index b228fe1ebb99112fe34ab7d1c3dbceb7275b34ee..29da773d7fc7ffff27294e4458444c32e46458d2 100644 (file)
--- a/Zend/zend_config.w32.h
+++ b/Zend/zend_config.w32.h
@@ -64,6 +64,7 @@ typedef unsigned int uint;
 #endif
 
 #define zend_finite(A) _finite(A)
+#define zend_isnan(A) _isnan(A)
 
 #ifdef LIBZEND_EXPORTS
 #      define ZEND_API __declspec(dllexport)