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