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1 | #ifndef BOOST_SMART_PTR_DETAIL_SP_NULLPTR_T_HPP_INCLUDED |
2 | #define BOOST_SMART_PTR_DETAIL_SP_NULLPTR_T_HPP_INCLUDED | |
3 | ||
4 | // MS compatible compilers support #pragma once | |
5 | ||
6 | #if defined(_MSC_VER) && (_MSC_VER >= 1020) | |
7 | # pragma once | |
8 | #endif | |
9 | ||
10 | // detail/sp_nullptr_t.hpp | |
11 | // | |
12 | // Copyright 2013 Peter Dimov | |
13 | // | |
14 | // Distributed under the Boost Software License, Version 1.0. | |
15 | // See accompanying file LICENSE_1_0.txt or copy at | |
16 | // http://www.boost.org/LICENSE_1_0.txt | |
17 | ||
18 | #include <boost/config.hpp> | |
19 | #include <cstddef> | |
20 | ||
21 | #if !defined( BOOST_NO_CXX11_NULLPTR ) | |
22 | ||
23 | namespace boost | |
24 | { | |
25 | ||
26 | namespace detail | |
27 | { | |
28 | ||
29 | #if !defined( BOOST_NO_CXX11_DECLTYPE ) && ( ( defined( __clang__ ) && !defined( _LIBCPP_VERSION ) ) || defined( __INTEL_COMPILER ) ) | |
30 | ||
31 | typedef decltype(nullptr) sp_nullptr_t; | |
32 | ||
33 | #else | |
34 | ||
35 | typedef std::nullptr_t sp_nullptr_t; | |
36 | ||
37 | #endif | |
38 | ||
39 | } // namespace detail | |
40 | ||
41 | } // namespace boost | |
42 | ||
43 | #endif // !defined( BOOST_NO_CXX11_NULLPTR ) | |
44 | ||
45 | #endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_NULLPTR_T_HPP_INCLUDED |