1
2// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
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_IS_VOID_HPP_INCLUDED
10#define BOOST_TT_IS_VOID_HPP_INCLUDED
11
12#include <boost/config.hpp>
13
14// should be the last #include
15#include <boost/type_traits/detail/bool_trait_def.hpp>
16
17namespace boost {
18
19//* is a type T void - is_void<T>
20#if defined( __CODEGEARC__ )
21BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_void,T,__is_void(T))
22#else
23BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_void,T,false)
24BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void,true)
25
26#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
27BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void const,true)
28BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void volatile,true)
29BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void const volatile,true)
30#endif
31
32#endif // non-CodeGear implementation
33
34} // namespace boost
35
36#include <boost/type_traits/detail/bool_trait_undef.hpp>
37
38#endif // BOOST_TT_IS_VOID_HPP_INCLUDED
39