1 # /* Copyright (C) 2001 2 # * Housemarque Oy 3 # * http://www.housemarque.com 4 # * 5 # * Distributed under the Boost Software License, Version 1.0. (See 6 # * accompanying file LICENSE_1_0.txt or copy at 7 # * http://www.boost.org/LICENSE_1_0.txt) 8 # */ 9 # 10 # /* Revised by Paul Mensonides (2002) */ 11 # /* Revised by Edward Diener (2015) */ 12 # 13 # /* See http://www.boost.org for most recent version. */ 14 # 15 # ifndef BOOST_PREPROCESSOR_FACILITIES_IDENTITY_HPP 16 # define BOOST_PREPROCESSOR_FACILITIES_IDENTITY_HPP 17 # 18 # include <boost/preprocessor/facilities/empty.hpp> 19 # include <boost/preprocessor/tuple/eat.hpp> 20 # 21 # /* BOOST_PP_IDENTITY */ 22 # 23 # define BOOST_PP_IDENTITY(item) item BOOST_PP_EMPTY 24 # 25 # define BOOST_PP_IDENTITY_N(item,n) item BOOST_PP_TUPLE_EAT_N(n) 26 # 27 # endif 28