mirror of
https://github.com/boostorg/conversion.git
synced 2026-06-11 11:51:19 +02:00
Antony Polukhin
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
// Copyright David Abrahams 2003.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_IMPLICIT_CAST_DWA200356_HPP
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#define BOOST_IMPLICIT_CAST_DWA200356_HPP
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#include <boost/config.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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# pragma once
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#endif
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#include <boost/config/pragma_message.hpp>
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#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
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defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) || \
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defined(BOOST_NO_CXX11_CONSTEXPR) || \
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defined(BOOST_NO_CXX11_NULLPTR) || \
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defined(BOOST_NO_CXX11_NOEXCEPT) || \
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defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \
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defined(BOOST_NO_CXX11_FINAL) || \
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defined(BOOST_NO_CXX11_ALIGNOF) || \
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defined(BOOST_NO_CXX11_STATIC_ASSERT) || \
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defined(BOOST_NO_CXX11_SMART_PTR) || \
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defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST) || \
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defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
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BOOST_PRAGMA_MESSAGE("C++03 support is deprecated in Boost.Conversion 1.82 and will be removed in Boost.Conversion 1.84.")
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#endif
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namespace boost {
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namespace detail {
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template<class T> struct icast_identity
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{
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typedef T type;
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};
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} // namespace detail
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// implementation originally suggested by C. Green in
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// http://lists.boost.org/MailArchives/boost/msg00886.php
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// The use of identity creates a non-deduced form, so that the
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// explicit template argument must be supplied
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template <typename T>
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BOOST_CONSTEXPR inline T implicit_cast (typename boost::detail::icast_identity<T>::type x) {
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return x;
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}
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} // namespace boost
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#endif // BOOST_IMPLICIT_CAST_DWA200356_HPP
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