1 # /* ************************************************************************** 2 # * * 3 # * (C) Copyright Paul Mensonides 2002. 4 # * Distributed under the Boost Software License, Version 1.0. (See 5 # * accompanying file LICENSE_1_0.txt or copy at 6 # * http://www.boost.org/LICENSE_1_0.txt) 7 # * * 8 # ************************************************************************** */ 9 # 10 # /* See http://www.boost.org for most recent version. */ 11 # 12 # include <boost/preprocessor/arithmetic/add.hpp> 13 # include <boost/preprocessor/arithmetic/dec.hpp> 14 # include <boost/preprocessor/control.hpp> 15 # include <libs/preprocessor/test/test.h> 16 17 # define TR(x) 1 18 19 BEGIN BOOST_PP_EXPR_IIF(0, TR)(0) == 0 END 20 BEGIN BOOST_PP_EXPR_IIF(1, TR)(0) == 1 END 21 22 BEGIN BOOST_PP_EXPR_IF(3, TR)(0) == 1 END 23 BEGIN BOOST_PP_EXPR_IF(0, TR)(0) == 0 END 24 25 BEGIN BOOST_PP_IIF(0, 1, 0) == 0 END 26 BEGIN BOOST_PP_IIF(1, 1, 0) == 1 END 27 28 BEGIN BOOST_PP_IF(0, 1, 0) == 0 END 29 BEGIN BOOST_PP_IF(9, 1, 0) == 1 END 30 31 # define PRED(d, state) state 32 # define OP_1(d, state) BOOST_PP_DEC(state) 33 34 BEGIN BOOST_PP_WHILE(PRED, OP_1, 50) == 0 END 35 36 # define OP_2(d, state) BOOST_PP_DEC(BOOST_PP_ADD(BOOST_PP_WHILE(PRED, OP_1, state), state)) 37 # define OP_3(d, state) BOOST_PP_DEC(BOOST_PP_ADD_D(d, BOOST_PP_WHILE_ ## d(PRED, OP_1, state), state)) 38 39 BEGIN BOOST_PP_WHILE(PRED, OP_2, 10) == 0 END 40 BEGIN BOOST_PP_WHILE(PRED, OP_3, 10) == 0 END 41