ceph/src/boost/libs/multiprecision/include/boost/multiprecision/traits/is_byte_container.hpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 //  Copyright 2015 John Maddock. Distributed under the Boost
   3 //  Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #ifndef BOOST_IS_BYTE_CONTAINER_HPP
   7 #define BOOST_IS_BYTE_CONTAINER_HPP
   8
   9 #include <boost/mpl/has_xxx.hpp>
  10 #include <boost/type_traits/is_integral.hpp>
  11
  12 namespace boost{ namespace multiprecision{ namespace detail{
  13
  14    BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_member_value_type, value_type, false);
  15    BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_member_const_iterator, const_iterator, false);
  16
  17    template <class C, bool b>
  18    struct is_byte_container_imp
  19    {
  20       static const bool value = boost::is_integral<typename C::value_type>::value && (sizeof(typename C::value_type) == 1);
  21    };
  22
  23    template <class C>
  24    struct is_byte_container_imp<C, false> : public boost::false_type {};
  25
  26    template <class C>
  27    struct is_byte_container : public is_byte_container_imp<C, has_member_value_type<C>::value && has_member_const_iterator<C>::value> {};
  28
  29
  30 }}} // namespaces
  31
  32 #endif // BOOST_IS_BYTE_CONTAINER_HPP
  33