boost/preprocessor/control/deduce_d.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) # * * # ************************************************************************** */ # # /* Revised by Edward Diener (2020) */ # # /* See http://www.boost.org for most recent version. */ # # ifndef BOOST_PREPROCESSOR_CONTROL_DEDUCE_D_HPP # define BOOST_PREPROCESSOR_CONTROL_DEDUCE_D_HPP # # include <boost/preprocessor/config/config.hpp> # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT() # # include <boost/preprocessor/control/while.hpp> # include <boost/preprocessor/detail/auto_rec.hpp> # # /* BOOST_PP_DEDUCE_D */ # # define BOOST_PP_DEDUCE_D() BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 256) # # else # # include <boost/preprocessor/arithmetic/dec.hpp> # include <boost/preprocessor/control/while.hpp> # include <boost/preprocessor/detail/auto_rec.hpp> # include <boost/preprocessor/config/limits.hpp> # # /* BOOST_PP_DEDUCE_D */ # # if BOOST_PP_LIMIT_WHILE == 256 # define BOOST_PP_DEDUCE_D() BOOST_PP_DEC(BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 256)) # elif BOOST_PP_LIMIT_WHILE == 512 # define BOOST_PP_DEDUCE_D() BOOST_PP_DEC(BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 512)) # elif BOOST_PP_LIMIT_WHILE == 1024 # define BOOST_PP_DEDUCE_D() BOOST_PP_DEC(BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 1024)) # else # error Incorrect value for the BOOST_PP_LIMIT_WHILE limit # endif # # endif # # endif