ceph/src/boost/boost/type_traits/floating_point_promotion.hpp

   1 // Copyright 2005 Alexander Nasonov.
   2 // Distributed under the Boost Software License, Version 1.0. (See
   3 // accompanying file LICENSE_1_0.txt or copy at
   4 // http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #ifndef FILE_boost_type_traits_floating_point_promotion_hpp_INCLUDED
   7 #define FILE_boost_type_traits_floating_point_promotion_hpp_INCLUDED
   8
   9 namespace boost {
  10
  11    template<class T> struct floating_point_promotion { typedef T type; };
  12    template<> struct floating_point_promotion<float> { typedef double type; };
  13    template<> struct floating_point_promotion<float const> { typedef double const type; };
  14    template<> struct floating_point_promotion<float volatile>{ typedef double volatile type; };
  15    template<> struct floating_point_promotion<float const volatile> { typedef double const volatile type; };
  16
  17 #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
  18
  19    template <class T> using floating_point_promotion_t = typename floating_point_promotion<T>::type;
  20
  21 #endif
  22
  23 }
  24
  25 #endif // #ifndef FILE_boost_type_traits_floating_point_promotion_hpp_INCLUDED
  26