1 //  (C) Copyright 2009-2011 Frederic Bron.
2 //
3 //  Use, modification and distribution are subject to the Boost Software License,
4 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 //  http://www.boost.org/LICENSE_1_0.txt).
6 //
7 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
8 
9 #ifndef BOOST_TT_HAS_EQUAL_TO_HPP_INCLUDED
10 #define BOOST_TT_HAS_EQUAL_TO_HPP_INCLUDED
11 
12 #define BOOST_TT_TRAIT_NAME has_equal_to
13 #define BOOST_TT_TRAIT_OP ==
14 #define BOOST_TT_FORBIDDEN_IF\
15    (\
16       /* Lhs==pointer and Rhs==fundamental */\
17       (\
18          ::boost::is_pointer< Lhs_noref >::value && \
19          ::boost::is_fundamental< Rhs_nocv >::value\
20       ) || \
21       /* Rhs==pointer and Lhs==fundamental */\
22       (\
23          ::boost::is_pointer< Rhs_noref >::value && \
24          ::boost::is_fundamental< Lhs_nocv >::value\
25       ) || \
26       /* Lhs==pointer and Rhs==pointer and Lhs!=base(Rhs) and Rhs!=base(Lhs) and Lhs!=void* and Rhs!=void* */\
27       (\
28          ::boost::is_pointer< Lhs_noref >::value && \
29          ::boost::is_pointer< Rhs_noref >::value && \
30          (! \
31             (\
32                ::boost::is_base_of< Lhs_noptr, Rhs_noptr >::value || \
33                ::boost::is_base_of< Rhs_noptr, Lhs_noptr >::value || \
34                ::boost::is_same< Lhs_noptr, Rhs_noptr >::value || \
35                ::boost::is_void< Lhs_noptr >::value || \
36                ::boost::is_void< Rhs_noptr >::value\
37             )\
38          )\
39       ) || \
40       (\
41          ::boost::type_traits_detail::is_likely_stateless_lambda<Lhs_noref>::value\
42       )\
43       )
44 
45 
46 #include <boost/type_traits/detail/has_binary_operator.hpp>
47 
48 #undef BOOST_TT_TRAIT_NAME
49 #undef BOOST_TT_TRAIT_OP
50 #undef BOOST_TT_FORBIDDEN_IF
51 
52 #endif
53