2 // (C) Copyright John Maddock 2000.
3 // Use, modification and distribution are subject to the
4 // Boost Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 #include <boost/type_traits/is_void.hpp>
8 #include <boost/mpl/if.hpp>
9 #include <boost/static_assert.hpp>
14 typedef typename boost::mpl::if_<
19 if_test<void>::type t1 = 0;
20 if_test<double>::type t2 = 0;
24 return (int)(t1 + t2);