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alignment_of.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\type_traits\alignment_of.hpp
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// (C) Copyright John Maddock 2000. // Use, modification and distribution are subject to 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). // // See http://www.boost.org/libs/type_traits for most recent version including documentation. #ifndef BOOST_TT_ALIGNMENT_OF_HPP_INCLUDED #define BOOST_TT_ALIGNMENT_OF_HPP_INCLUDED #include
#include
// should be the last #include #include
#ifdef BOOST_MSVC # pragma warning(push) # pragma warning(disable: 4121 4512) // alignment is sensitive to packing #endif #if defined(__BORLANDC__) && (__BORLANDC__ < 0x600) #pragma option push -Vx- -Ve- #endif namespace boost { template
struct alignment_of; // get the alignment of some arbitrary type: namespace detail { template
struct alignment_of_hack { char c; T t; alignment_of_hack(); }; template
struct alignment_logic { BOOST_STATIC_CONSTANT(std::size_t, value = A < S ? A : S); }; template< typename T > struct alignment_of_impl { BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::alignment_logic< sizeof(::boost::detail::alignment_of_hack
) - sizeof(T), sizeof(T) >::value)); }; } // namespace detail BOOST_TT_AUX_SIZE_T_TRAIT_DEF1(alignment_of,T,::boost::detail::alignment_of_impl
::value) // references have to be treated specially, assume // that a reference is just a special pointer: #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION template
struct alignment_of
: alignment_of
{ }; #endif #ifdef __BORLANDC__ // long double gives an incorrect value of 10 (!) // unless we do this... struct long_double_wrapper{ long double ld; }; template<> struct alignment_of
: public alignment_of
{}; #endif // void has to be treated specially: BOOST_TT_AUX_SIZE_T_TRAIT_SPEC1(alignment_of,void,0) #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS BOOST_TT_AUX_SIZE_T_TRAIT_SPEC1(alignment_of,void const,0) BOOST_TT_AUX_SIZE_T_TRAIT_SPEC1(alignment_of,void volatile,0) BOOST_TT_AUX_SIZE_T_TRAIT_SPEC1(alignment_of,void const volatile,0) #endif } // namespace boost #if defined(__BORLANDC__) && (__BORLANDC__ < 0x600) #pragma option pop #endif #ifdef BOOST_MSVC # pragma warning(pop) #endif #include
#endif // BOOST_TT_ALIGNMENT_OF_HPP_INCLUDED
alignment_of.hpp
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