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 30 namespace boost { 31 32 // forward declaration, needed by 'is_pod_array_helper' template below 33 template< typename T > struct is_POD; 34 35 template <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) 40 template <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: 45 template<> struct is_pod<void> : public true_type{}; 46 47 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS 48 template<> struct is_pod<void const> : public true_type{}; 49 template<> struct is_pod<void const volatile> : public true_type{}; 50 template<> struct is_pod<void volatile> : public true_type{}; 51 #endif 52 53 template<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