+ //
+ // This struct is the same as above, but has no static assert on long double usage,
+ // it should be used only on functions that can be implemented for long double
+ // even when std lib support is missing or broken for that type.
+ //
+ template <class T1, class T2=float, class T3=float, class T4=float, class T5=float, class T6=float>
+ struct promote_args_permissive
+ {
+ typedef typename promote_args_2<
+ typename remove_cv<T1>::type,
+ typename promote_args_2<
+ typename remove_cv<T2>::type,
+ typename promote_args_2<
+ typename remove_cv<T3>::type,
+ typename promote_args_2<
+ typename remove_cv<T4>::type,
+ typename promote_args_2<
+ typename remove_cv<T5>::type, typename remove_cv<T6>::type
+ >::type
+ >::type
+ >::type
+ >::type
+ >::type type;
+ };
+