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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_MINUS_HPP_INCLUDED
10 #define BOOST_TT_HAS_MINUS_HPP_INCLUDED
11
12 #define BOOST_TT_TRAIT_NAME has_minus
13 #define BOOST_TT_TRAIT_OP -
14 #define BOOST_TT_FORBIDDEN_IF\
15    ::boost::type_traits::ice_or<\
16       /* Lhs==pointer and Rhs==fundamental and Rhs!=integral */\
17       ::boost::type_traits::ice_and<\
18          ::boost::is_pointer< Lhs_noref >::value,\
19          ::boost::is_fundamental< Rhs_nocv >::value,\
20          ::boost::type_traits::ice_not< ::boost::is_integral< Rhs_noref >::value >::value\
21       >::value,\
22       /* Lhs==void* and (Rhs==fundamental or Rhs==pointer) */\
23       ::boost::type_traits::ice_and<\
24          ::boost::is_pointer< Lhs_noref >::value,\
25          ::boost::is_void< Lhs_noptr >::value,\
26          ::boost::type_traits::ice_or<\
27             ::boost::is_fundamental< Rhs_nocv >::value,\
28             ::boost::is_pointer< Rhs_noref >::value\
29          >::value\
30       >::value,\
31       /* Rhs==void* and (Lhs==fundamental or Lhs==pointer) */\
32       ::boost::type_traits::ice_and<\
33          ::boost::is_pointer< Rhs_noref >::value,\
34          ::boost::is_void< Rhs_noptr >::value,\
35          ::boost::type_traits::ice_or<\
36             ::boost::is_fundamental< Lhs_nocv >::value,\
37             ::boost::is_pointer< Lhs_noref >::value\
38          >::value\
39       >::value,\
40       /* Lhs=fundamental and Rhs=pointer */\
41       ::boost::type_traits::ice_and<\
42          ::boost::is_fundamental< Lhs_nocv >::value,\
43          ::boost::is_pointer< Rhs_noref >::value\
44       >::value,\
45       /* two different pointers */\
46       ::boost::type_traits::ice_and<\
47          ::boost::is_pointer< Lhs_noref >::value,\
48          ::boost::is_pointer< Rhs_noref >::value,\
49          ::boost::type_traits::ice_not< ::boost::is_same< Lhs_nocv, Rhs_nocv >::value >::value\
50       >::value\
51    >::value
52
53
54 #include <boost/type_traits/detail/has_binary_operator.hpp>
55
56 #undef BOOST_TT_TRAIT_NAME
57 #undef BOOST_TT_TRAIT_OP
58 #undef BOOST_TT_FORBIDDEN_IF
59
60 #endif