Index: third_party/boost/boost/type_traits/alignment_of.hpp |
diff --git a/third_party/boost/boost/type_traits/alignment_of.hpp b/third_party/boost/boost/type_traits/alignment_of.hpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..9739f140fe13388cc29d7edd344477d44778d80e |
--- /dev/null |
+++ b/third_party/boost/boost/type_traits/alignment_of.hpp |
@@ -0,0 +1,117 @@ |
+ |
+// (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 <boost/config.hpp> |
+#include <cstddef> |
+ |
+#include <boost/type_traits/intrinsics.hpp> |
+// should be the last #include |
+#include <boost/type_traits/detail/size_t_trait_def.hpp> |
+ |
+#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 <typename T> struct alignment_of; |
+ |
+// get the alignment of some arbitrary type: |
+namespace detail { |
+ |
+#ifdef BOOST_MSVC |
+#pragma warning(push) |
+#pragma warning(disable:4324) // structure was padded due to __declspec(align()) |
+#endif |
+template <typename T> |
+struct alignment_of_hack |
+{ |
+ char c; |
+ T t; |
+ alignment_of_hack(); |
+}; |
+#ifdef BOOST_MSVC |
+#pragma warning(pop) |
+#endif |
+ |
+template <unsigned A, unsigned S> |
+struct alignment_logic |
+{ |
+ BOOST_STATIC_CONSTANT(std::size_t, value = A < S ? A : S); |
+}; |
+ |
+ |
+template< typename T > |
+struct alignment_of_impl |
+{ |
+#ifndef BOOST_ALIGNMENT_OF |
+ BOOST_STATIC_CONSTANT(std::size_t, value = |
+ (::boost::detail::alignment_logic< |
+ sizeof(::boost::detail::alignment_of_hack<T>) - sizeof(T), |
+ sizeof(T) |
+ >::value)); |
+#else |
+ // |
+ // We put this here, rather than in the definition of |
+ // alignment_of below, because MSVC's __alignof doesn't |
+ // always work in that context for some unexplained reason. |
+ // (See type_with_alignment tests for test cases). |
+ // |
+ BOOST_STATIC_CONSTANT(std::size_t, value = BOOST_ALIGNMENT_OF(T)); |
+#endif |
+}; |
+ |
+} // namespace detail |
+ |
+BOOST_TT_AUX_SIZE_T_TRAIT_DEF1(alignment_of,T,::boost::detail::alignment_of_impl<T>::value) |
+ |
+// references have to be treated specially, assume |
+// that a reference is just a special pointer: |
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
+template <typename T> |
+struct alignment_of<T&> |
+ : alignment_of<T*> |
+{ |
+}; |
+#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<long double> |
+ : public alignment_of<long_double_wrapper>{}; |
+#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 <boost/type_traits/detail/size_t_trait_undef.hpp> |
+ |
+#endif // BOOST_TT_ALIGNMENT_OF_HPP_INCLUDED |
+ |