1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
|
// Copyright David Abrahams 2003.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_IMPLICIT_CAST_DWA200356_HPP
#define BOOST_IMPLICIT_CAST_DWA200356_HPP
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <boost/config/pragma_message.hpp>
#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) || \
defined(BOOST_NO_CXX11_CONSTEXPR) || \
defined(BOOST_NO_CXX11_NULLPTR) || \
defined(BOOST_NO_CXX11_NOEXCEPT) || \
defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \
defined(BOOST_NO_CXX11_FINAL) || \
defined(BOOST_NO_CXX11_ALIGNOF) || \
defined(BOOST_NO_CXX11_STATIC_ASSERT) || \
defined(BOOST_NO_CXX11_SMART_PTR) || \
defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST) || \
defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
BOOST_PRAGMA_MESSAGE("C++03 support is deprecated in Boost.Conversion 1.82 and will be removed in Boost.Conversion 1.84.")
#endif
namespace boost {
namespace detail {
template<class T> struct icast_identity
{
typedef T type;
};
} // namespace detail
// implementation originally suggested by C. Green in
// http://lists.boost.org/MailArchives/boost/msg00886.php
// The use of identity creates a non-deduced form, so that the
// explicit template argument must be supplied
template <typename T>
BOOST_CONSTEXPR inline T implicit_cast (typename boost::detail::icast_identity<T>::type x) {
return x;
}
} // namespace boost
#endif // BOOST_IMPLICIT_CAST_DWA200356_HPP
|