1 // Copyright (C) 2002 Brad King (brad.king@kitware.com)
2 // Douglas Gregor (gregod@cs.rpi.edu)
4 // Copyright (C) 2002, 2008 Peter Dimov
6 // Distributed under the Boost Software License, Version 1.0. (See
7 // accompanying file LICENSE_1_0.txt or copy at
8 // http://www.boost.org/LICENSE_1_0.txt)
10 // For more information, see http://www.boost.org
12 #ifndef BOOST_UTILITY_ADDRESSOF_HPP
13 # define BOOST_UTILITY_ADDRESSOF_HPP
15 # include <boost/config.hpp>
16 # include <boost/detail/workaround.hpp>
24 template<class T> struct addr_impl_ref
28 inline addr_impl_ref( T & v ): v_( v ) {}
29 inline operator T& () const { return v_; }
32 template<class T> struct addressof_impl
34 static inline T * f( T & v, long )
36 return reinterpret_cast<T*>(
37 &const_cast<char&>(reinterpret_cast<const volatile char &>(v)));
40 static inline T * f( T * v, int )
48 template<class T> T * addressof( T & v )
50 #if defined( __BORLANDC__ ) && BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT( 0x610 ) )
52 return boost::detail::addressof_impl<T>::f( v, 0 );
56 return boost::detail::addressof_impl<T>::f( boost::detail::addr_impl_ref<T>( v ), 0 );
61 #if defined( __SUNPRO_CC ) && BOOST_WORKAROUND( __SUNPRO_CC, BOOST_TESTED_AT( 0x590 ) )
66 template<class T> struct addressof_addp
73 template< class T, std::size_t N >
74 typename detail::addressof_addp< T[N] >::type addressof( T (&t)[N] )
81 // Borland doesn't like casting an array reference to a char reference
82 // but these overloads work around the problem.
83 #if defined( __BORLANDC__ ) && BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
84 template<typename T,std::size_t N>
85 T (*addressof(T (&t)[N]))[N]
87 return reinterpret_cast<T(*)[N]>(&t);
90 template<typename T,std::size_t N>
91 const T (*addressof(const T (&t)[N]))[N]
93 return reinterpret_cast<const T(*)[N]>(&t);
99 #endif // BOOST_UTILITY_ADDRESSOF_HPP