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# /* ************************************************************************** # * * # * (C) Copyright Paul Mensonides 2003. # * 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) # * * # ************************************************************************** */ # # /* See http://www.boost.org for most recent version. */ # # ifndef BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_OR_1_HPP # define BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_OR_1_HPP # # include <boost/preprocessor/control/iif.hpp> # include <boost/preprocessor/facilities/empty.hpp> # include <boost/preprocessor/facilities/identity.hpp> # include <boost/preprocessor/facilities/is_1.hpp> # include <boost/preprocessor/facilities/is_empty.hpp> # # /* BOOST_PP_IS_EMPTY_OR_1 */ # # define BOOST_PP_IS_EMPTY_OR_1(x) \ BOOST_PP_IIF( \ BOOST_PP_IS_EMPTY(x BOOST_PP_EMPTY()), \ BOOST_PP_IDENTITY(1), \ BOOST_PP_IS_1 \ )(x) \ /**/ # # endif