| /* |
| * 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) |
| * |
| * Copyright (c) 2018 Andrey Semashev |
| */ |
| /*! |
| * \file atomic/detail/type_traits/is_iec559.hpp |
| * |
| * This header defines \c is_iec559 type trait |
| */ |
| |
| #ifndef BOOST_ATOMIC_DETAIL_TYPE_TRAITS_IS_IEC559_HPP_INCLUDED_ |
| #define BOOST_ATOMIC_DETAIL_TYPE_TRAITS_IS_IEC559_HPP_INCLUDED_ |
| |
| #include <limits> |
| #include <boost/atomic/detail/config.hpp> |
| |
| #ifdef BOOST_HAS_PRAGMA_ONCE |
| #pragma once |
| #endif |
| |
| namespace boost { |
| namespace atomics { |
| namespace detail { |
| |
| template< typename T > |
| struct is_iec559 |
| { |
| static BOOST_CONSTEXPR_OR_CONST bool value = !!std::numeric_limits< T >::is_iec559; |
| }; |
| |
| #if defined(BOOST_HAS_FLOAT128) |
| // libstdc++ does not specialize numeric_limits for __float128 |
| template< > |
| struct is_iec559< boost::float128_type > |
| { |
| static BOOST_CONSTEXPR_OR_CONST bool value = true; |
| }; |
| #endif // defined(BOOST_HAS_FLOAT128) |
| |
| } // namespace detail |
| } // namespace atomics |
| } // namespace boost |
| |
| #endif // BOOST_ATOMIC_DETAIL_TYPE_TRAITS_IS_IEC559_HPP_INCLUDED_ |