整理

include/boost/align/detail/add_reference.hpp

@@ -0,0 +1,44 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_ALIGN_DETAIL_ADD_REFERENCE_HPP
+#define BOOST_ALIGN_DETAIL_ADD_REFERENCE_HPP
+
+#include <boost/config.hpp>
+
+#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
+#include <type_traits>
+#endif
+
+namespace boost {
+namespace alignment {
+namespace detail {
+
+#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
+using std::add_lvalue_reference;
+#else
+template<class T>
+struct add_lvalue_reference {
+    typedef T& type;
+};
+
+template<>
+struct add_lvalue_reference<void> {
+    typedef void type;
+};
+
+template<>
+struct add_lvalue_reference<const void> {
+    typedef const void type;
+};
+#endif
+
+} /* detail */
+} /* alignment */
+} /* boost */
+
+#endif