Don't use fpclass because it causes a warning for long doubles. I don't know if the warning is vaild here - but I don't want to disable it as it's useful for checking other function calls.

[SVN r41057]

libs/functional

@@ -1 +1 @@
-Subproject commit f7877f6738bcd7e2baf39e5b322def23487d4189
+Subproject commit ba950b760e93927d80cc641f12770efd49435831