text: // Copyright 2005 Alexander Nasonov.
  // Distributed under 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 FILE_boost_type_traits_floating_point_promotion_hpp_INCLUDED
  #define FILE_boost_type_traits_floating_point_promotion_hpp_INCLUDED
  
  #include <boost/config.hpp>
  
  namespace boost {
  
     template<class T> struct floating_point_promotion { typedef T type; };
     template<> struct floating_point_promotion<float> { typedef double type; };
     template<> struct floating_point_promotion<float const> { typedef double const type; };
     template<> struct floating_point_promotion<float volatile>{ typedef double volatile type; };
     template<> struct floating_point_promotion<float const volatile> { typedef double const volatile type; };
  
  #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
  
     template <class T> using floating_point_promotion_t = typename floating_point_promotion<T>::type;
  
  #endif
  
  }
  
  #endif // #ifndef FILE_boost_type_traits_floating_point_promotion_hpp_INCLUDED
  