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).
7 // See http://www.boost.org/libs/type_traits for most recent version including documentation.
9 #ifndef BOOST_TT_IS_VOID_HPP_INCLUDED
10 #define BOOST_TT_IS_VOID_HPP_INCLUDED
12 #include <boost/config.hpp>
14 // should be the last #include
15 #include <boost/type_traits/detail/bool_trait_def.hpp>
19 //* is a type T void - is_void<T>
20 #if defined( __CODEGEARC__ )
21 BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_void,T,__is_void(T))
23 BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_void,T,false)
24 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void,true)
26 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
27 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void const,true)
28 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void volatile,true)
29 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void const volatile,true)
32 #endif // non-CodeGear implementation
36 #include <boost/type_traits/detail/bool_trait_undef.hpp>
38 #endif // BOOST_TT_IS_VOID_HPP_INCLUDED