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44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
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// Copyright Kevlin Henney, 2000-2005.
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// Copyright Alexander Nasonov, 2006-2010.
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// Copyright Antony Polukhin, 2011-2019.
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//
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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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//
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// what: lexical_cast custom keyword cast
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// who: contributed by Kevlin Henney,
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// enhanced with contributions from Terje Slettebo,
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// with additional fixes and suggestions from Gennaro Prota,
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// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
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// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
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// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
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// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
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#ifndef BOOST_LEXICAL_CAST_DETAIL_WIDEST_CHAR_HPP
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#define BOOST_LEXICAL_CAST_DETAIL_WIDEST_CHAR_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/type_traits/conditional.hpp>
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namespace boost { namespace detail {
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template <typename TargetChar, typename SourceChar>
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struct widest_char {
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typedef BOOST_DEDUCED_TYPENAME boost::conditional<
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(sizeof(TargetChar) > sizeof(SourceChar))
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, TargetChar
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, SourceChar
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>::type type;
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};
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}} // namespace boost::detail
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#endif // BOOST_LEXICAL_CAST_DETAIL_WIDEST_CHAR_HPP
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