williamr@2: // Copyright David Abrahams 2003.
williamr@2: // Distributed under the Boost Software License, Version 1.0. (See
williamr@2: // accompanying file LICENSE_1_0.txt or copy at
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: #ifndef IMPLICIT_CAST_DWA200356_HPP
williamr@2: # define IMPLICIT_CAST_DWA200356_HPP
williamr@2: 
williamr@2: # include <boost/mpl/identity.hpp>
williamr@2: 
williamr@2: namespace boost {
williamr@2: 
williamr@2: // implementation originally suggested by C. Green in
williamr@2: // http://lists.boost.org/MailArchives/boost/msg00886.php
williamr@2: 
williamr@2: // The use of identity creates a non-deduced form, so that the
williamr@2: // explicit template argument must be supplied
williamr@2: template <typename T>
williamr@2: inline T implicit_cast (typename mpl::identity<T>::type x) {
williamr@2:     return x;
williamr@2: }
williamr@2: 
williamr@2: // incomplete return type now is here
williamr@2: //template <typename T>
williamr@2: //void implicit_cast (...);
williamr@2: 
williamr@2: 
williamr@2: } // namespace boost
williamr@2: 
williamr@2: #endif // IMPLICIT_CAST_DWA200356_HPP