forked from boostorg/preprocessor
38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
#ifndef BOOST_PREPROCESSOR_IF_HPP
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#define BOOST_PREPROCESSOR_IF_HPP
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// Copyright (C) 2001
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// Housemarque Oy
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// http://www.housemarque.com
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//
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// Permission to copy, use, modify, sell and distribute this software is
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// granted provided this copyright notice appears in all copies. This
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// software is provided "as is" without express or implied warranty, and
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// with no claim as to its suitability for any purpose.
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// See http://www.boost.org for most recent version.
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/*! \file
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<a href="../../../../boost/preprocessor/if.hpp">Click here to see the header.</a>
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*/
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#include <boost/preprocessor/logical/bool.hpp>
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#include <boost/preprocessor/tuple/elem.hpp>
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//! Expands to T if C != 0 and E if C == 0.
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/*!
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BOOST_PP_IF() enables convenient generation of lists using
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BOOST_PP_REPEAT().
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*/
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#define BOOST_PP_IF(C,T,E) BOOST_PP_IF_BOOL(BOOST_PP_BOOL(C))(E,T)
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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#define BOOST_PP_IF_BOOL(C) BOOST_PP_IF_BOOL_DELAY(C)
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#define BOOST_PP_IF_BOOL_DELAY(C) BOOST_PP_TUPLE2_ELEM##C
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#endif
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//! Obsolete. Use BOOST_PP_IF().
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#define BOOST_PREPROCESSOR_IF(C,T,E) BOOST_PP_IF(C,T,E)
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#endif
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