63e88f80
 Hu Chunming
提交三方库
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#ifndef BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED
#define BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED
// Copyright 2001 John Maddock.
// Copyright 2017 Peter Dimov.
//
// 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
//
// BOOST_STRINGIZE(X)
// BOOST_JOIN(X, Y)
//
// Note that this header is C compatible.
//
// Helper macro BOOST_STRINGIZE:
// Converts the parameter X to a string after macro replacement
// on X has been performed.
//
#define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X)
#define BOOST_DO_STRINGIZE(X) #X
//
// Helper macro BOOST_JOIN:
// The following piece of macro magic joins the two
// arguments together, even when one of the arguments is
// itself a macro (see 16.3.1 in C++ standard). The key
// is that macro expansion of macro arguments does not
// occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN.
//
#define BOOST_JOIN(X, Y) BOOST_DO_JOIN(X, Y)
#define BOOST_DO_JOIN(X, Y) BOOST_DO_JOIN2(X,Y)
#define BOOST_DO_JOIN2(X, Y) X##Y
#endif // BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED
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