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32 lines
1.2 KiB
C++
32 lines
1.2 KiB
C++
# /* **************************************************************************
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# * *
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# * (C) Copyright Paul Mensonides 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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# * *
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# ************************************************************************** */
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#
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# /* See http://www.boost.org for most recent version. */
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#
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# ifndef BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_OR_1_HPP
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# define BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_OR_1_HPP
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#
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# include <boost/preprocessor/control/iif.hpp>
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# include <boost/preprocessor/facilities/empty.hpp>
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# include <boost/preprocessor/facilities/identity.hpp>
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# include <boost/preprocessor/facilities/is_1.hpp>
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# include <boost/preprocessor/facilities/is_empty.hpp>
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#
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# /* BOOST_PP_IS_EMPTY_OR_1 */
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#
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# define BOOST_PP_IS_EMPTY_OR_1(x) \
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BOOST_PP_IIF( \
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BOOST_PP_IS_EMPTY(x BOOST_PP_EMPTY()), \
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BOOST_PP_IDENTITY(1), \
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BOOST_PP_IS_1 \
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)(x) \
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/**/
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#
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# endif
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