--- /dev/null
+/////////////////////////////////////////////////////////////////////////////
+// Name: math.h
+// Purpose: interface of global functions
+// Author: wxWidgets team
+// RCS-ID: $Id$
+// Licence: wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+/** @ingroup group_funcmacro_math */
+//@{
+
+/**
+ Returns a non-zero value if @a x is neither infinite nor NaN (not a
+ number), returns 0 otherwise.
+
+ @header{wx/math.h}
+*/
+int wxFinite(double x);
+
+/**
+ Returns a non-zero value if x is NaN (not a number), returns 0 otherwise.
+
+ @header{wx/math.h}
+*/
+bool wxIsNaN(double x);
+
+//@}
+