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Relational operators added

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[SVN r27669]
This commit is contained in:
Peter Dimov
2005-03-15 14:15:38 +00:00
parent 7b9a97a758
commit ed817c5b15
4 changed files with 128 additions and 0 deletions
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include/boost/bind.hpp
+29
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@@ -1149,6 +1149,35 @@ template<class R, class F, class L>
return bind_t<bool, logical_not, list_type> ( logical_not(), list_type(f) );
}
// relational operators
#define BOOST_BIND_OPERATOR( op, name ) \
\
struct name \
{ \
template<class V, class W> bool operator()(V const & v, W const & w) const { return v op w; } \
}; \
\
template<class R, class F, class L, class A2> \
bind_t< bool, name, list2< bind_t<R, F, L>, typename add_value<A2>::type > > \
operator op (bind_t<R, F, L> const & f, A2 a2) \
{ \
typedef typename add_value<A2>::type B2; \
typedef list2< bind_t<R, F, L>, B2> list_type; \
return bind_t<bool, name, list_type> ( name(), list_type(f, a2) ); \
}
BOOST_BIND_OPERATOR( ==, equal )
BOOST_BIND_OPERATOR( !=, not_equal )
BOOST_BIND_OPERATOR( <, less )
BOOST_BIND_OPERATOR( <=, less_equal )
BOOST_BIND_OPERATOR( >, greater )
BOOST_BIND_OPERATOR( >=, greater_equal )
#undef BOOST_BIND_OPERATOR
} // namespace _bi
// visit_each