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///////////////////////////////////////////////////////////////////////////////
// Copyright 2015 John Maddock. 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 BOOST_IS_BYTE_CONTAINER_HPP
#define BOOST_IS_BYTE_CONTAINER_HPP
#include <iterator>
#include <type_traits>
namespace boost { namespace multiprecision { namespace detail {
template <class T>
struct has_member_const_iterator
{
template <class U>
static double check(U*, typename U::const_iterator* = nullptr);
static char check(...);
static T* get();
static constexpr bool value = sizeof(check(get())) == sizeof(double);
};
template <class C, class Iterator>
struct is_byte_container_imp_2
{
using container_value_type = typename std::remove_cv<typename std::iterator_traits<typename C::const_iterator>::value_type>::type;
static constexpr bool value = boost::multiprecision::detail::is_integral<container_value_type>::value && (sizeof(container_value_type) == 1);
};
template <class C>
struct is_byte_container_imp_2<C, void> : public std::false_type
{};
template <class C, bool b>
struct is_byte_container_imp : public is_byte_container_imp_2<C, typename C::const_iterator>
{
};
template <class C>
struct is_byte_container_imp<C, false> : public std::false_type
{};
template <class C>
struct is_byte_container : public is_byte_container_imp<C, has_member_const_iterator<C>::value>
{};
}}} // namespace boost::multiprecision::detail
#endif // BOOST_IS_BYTE_CONTAINER_HPP
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