ceph/src/boost/boost/atomic/detail/type_traits/conditional.hpp

   1 /*
   2  * Distributed under the Boost Software License, Version 1.0.
   3  * (See accompanying file LICENSE_1_0.txt or copy at
   4  * http://www.boost.org/LICENSE_1_0.txt)
   5  *
   6  * Copyright (c) 2017 Andrey Semashev
   7  */
   8 /*!
   9  * \file   atomic/detail/type_traits/conditional.hpp
  10  *
  11  * This header defines \c conditional type trait
  12  */
  13
  14 #ifndef BOOST_ATOMIC_DETAIL_TYPE_TRAITS_CONDITIONAL_HPP_INCLUDED_
  15 #define BOOST_ATOMIC_DETAIL_TYPE_TRAITS_CONDITIONAL_HPP_INCLUDED_
  16
  17 #include <boost/atomic/detail/config.hpp>
  18 #if !defined(BOOST_ATOMIC_DETAIL_NO_CXX11_HDR_TYPE_TRAITS)
  19 #include <type_traits>
  20 #else
  21 #include <boost/type_traits/conditional.hpp>
  22 #endif
  23
  24 #ifdef BOOST_HAS_PRAGMA_ONCE
  25 #pragma once
  26 #endif
  27
  28 namespace boost {
  29 namespace atomics {
  30 namespace detail {
  31
  32 #if !defined(BOOST_ATOMIC_DETAIL_NO_CXX11_HDR_TYPE_TRAITS)
  33 using std::conditional;
  34 #else
  35 using boost::conditional;
  36 #endif
  37
  38 } // namespace detail
  39 } // namespace atomics
  40 } // namespace boost
  41
  42 #endif // BOOST_ATOMIC_DETAIL_TYPE_TRAITS_CONDITIONAL_HPP_INCLUDED_