1
2// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
3// Use, modification and distribution are subject to the Boost Software License,
4// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt).
6//
7// See http://www.boost.org/libs/type_traits for most recent version including documentation.
8
9#ifndef BOOST_TT_IS_POD_HPP_INCLUDED
10#define BOOST_TT_IS_POD_HPP_INCLUDED
11
12#include <cstddef> // size_t
13#include <boost/type_traits/detail/config.hpp>
14#include <boost/type_traits/is_void.hpp>
15#include <boost/type_traits/is_scalar.hpp>
16#include <boost/type_traits/intrinsics.hpp>
17
18#ifdef __SUNPRO_CC
19#include <boost/type_traits/is_function.hpp>
20#endif
21
22#include <cstddef>
23
24#ifndef BOOST_IS_POD
25#define BOOST_INTERNAL_IS_POD(T) false
26#else
27#define BOOST_INTERNAL_IS_POD(T) BOOST_IS_POD(T)
28#endif
29
30namespace boost {
31
32// forward declaration, needed by 'is_pod_array_helper' template below
33template< typename T > struct is_POD;
34
35template <typename T> struct is_pod
36: public integral_constant<bool, ::boost::is_scalar<T>::value || ::boost::is_void<T>::value || BOOST_INTERNAL_IS_POD(T)>
37{};
38
39#if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
40template <typename T, std::size_t sz> struct is_pod<T[sz]> : public is_pod<T>{};
41#endif
42
43
44// the following help compilers without partial specialization support:
45template<> struct is_pod<void> : public true_type{};
46
47#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
48template<> struct is_pod<void const> : public true_type{};
49template<> struct is_pod<void const volatile> : public true_type{};
50template<> struct is_pod<void volatile> : public true_type{};
51#endif
52
53template<class T> struct is_POD : public is_pod<T>{};
54
55} // namespace boost
56
57#undef BOOST_INTERNAL_IS_POD
58
59#endif // BOOST_TT_IS_POD_HPP_INCLUDED
60