1
2// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard
3// Hinnant & John Maddock 2000.
4// Use, modification and distribution are subject to the Boost Software License,
5// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt).
7//
8// See http://www.boost.org/libs/type_traits for most recent version including documentation.
9
10#ifndef BOOST_TT_ADD_CONST_HPP_INCLUDED
11#define BOOST_TT_ADD_CONST_HPP_INCLUDED
12
13#include <boost/config.hpp>
14
15// should be the last #include
16#include <boost/type_traits/detail/type_trait_def.hpp>
17
18namespace boost {
19
20// * convert a type T to const type - add_const<T>
21// this is not required since the result is always
22// the same as "T const", but it does suppress warnings
23// from some compilers:
24
25#if defined(BOOST_MSVC)
26// This bogus warning will appear when add_const is applied to a
27// const volatile reference because we can't detect const volatile
28// references with MSVC6.
29# pragma warning(push)
30# pragma warning(disable:4181) // warning C4181: qualifier applied to reference type ignored
31#endif
32
33BOOST_TT_AUX_TYPE_TRAIT_DEF1(add_const,T,T const)
34
35#if defined(BOOST_MSVC)
36# pragma warning(pop)
37#endif
38
39BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,add_const,T&,T&)
40
41} // namespace boost
42
43#include <boost/type_traits/detail/type_trait_undef.hpp>
44
45#endif // BOOST_TT_ADD_CONST_HPP_INCLUDED
46