boost/preprocessor/control/expr_iif.hpp
# /* ************************************************************************** # * * # * (C) Copyright Paul Mensonides 2002. # * 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_CONTROL_EXPR_IIF_HPP # define BOOST_PREPROCESSOR_CONTROL_EXPR_IIF_HPP # # include <boost/preprocessor/config/config.hpp> # # /* BOOST_PP_EXPR_IIF */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC() # define BOOST_PP_EXPR_IIF(bit, expr) BOOST_PP_EXPR_IIF_I(bit, expr) # else # define BOOST_PP_EXPR_IIF(bit, expr) BOOST_PP_EXPR_IIF_OO((bit, expr)) # define BOOST_PP_EXPR_IIF_OO(par) BOOST_PP_EXPR_IIF_I ## par # endif # # define BOOST_PP_EXPR_IIF_I(bit, expr) BOOST_PP_EXPR_IIF_ ## bit(expr) # # define BOOST_PP_EXPR_IIF_0(expr) # define BOOST_PP_EXPR_IIF_1(expr) expr # # endif