| 123456789101112131415161718192021222324252627282930 | //  sign.hpp////  (C) Copyright 2011 Vicente J. Botet Escriba//  Use, modification and distribution are subject to the Boost Software License,//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at//  http://www.boost.org/LICENSE_1_0.txt).//#ifndef BOOST_RATIO_MPL_SIGN_HPP#define BOOST_RATIO_MPL_SIGN_HPP#include <boost/ratio/ratio.hpp>#include <boost/ratio/mpl/numeric_cast.hpp>#include <boost/ratio/detail/mpl/sign.hpp>namespace boost { namespace mpl {template<>struct sign_impl< rational_c_tag >{    template< typename R > struct apply        : ratio_sign<R>    {    };};    }}#endif  // BOOST_RATIO_MPL_SIGN_HPP
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