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# ifndef BOOST_PREPROCESSOR_CONTROL_IIF_HPP
13# define BOOST_PREPROCESSOR_CONTROL_IIF_HPP
14#
15# include <boost/preprocessor/config/config.hpp>
16#
17# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
18# define BOOST_PP_IIF(bit, t, f) BOOST_PP_IIF_I(bit, t, f)
19# else
20# define BOOST_PP_IIF(bit, t, f) BOOST_PP_IIF_OO((bit, t, f))
21# define BOOST_PP_IIF_OO(par) BOOST_PP_IIF_I ## par
22# endif
23#
24# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
25# define BOOST_PP_IIF_I(bit, t, f) BOOST_PP_IIF_ ## bit(t, f)
26# else
27# define BOOST_PP_IIF_I(bit, t, f) BOOST_PP_IIF_II(BOOST_PP_IIF_ ## bit(t, f))
28# define BOOST_PP_IIF_II(id) id
29# endif
30#
31# define BOOST_PP_IIF_0(t, f) f
32# define BOOST_PP_IIF_1(t, f) t
33#
34# endif
35

source code of boost/boost/preprocessor/control/iif.hpp