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#
12# /* See http://www.boost.org for most recent version. */
13#
14# ifndef BOOST_PREPROCESSOR_CONTROL_IF_HPP
15# define BOOST_PREPROCESSOR_CONTROL_IF_HPP
16#
17# include <boost/preprocessor/config/config.hpp>
18# include <boost/preprocessor/control/iif.hpp>
19# include <boost/preprocessor/logical/bool.hpp>
20#
21# /* BOOST_PP_IF */
22#
23# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
24# define BOOST_PP_IF(cond, t, f) BOOST_PP_IIF(BOOST_PP_BOOL(cond), t, f)
25# else
26# define BOOST_PP_IF(cond, t, f) BOOST_PP_IF_I(cond, t, f)
27# define BOOST_PP_IF_I(cond, t, f) BOOST_PP_IIF(BOOST_PP_BOOL(cond), t, f)
28# endif
29#
30# endif
31

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