source: NonGTP/Boost/boost/preprocessor/control/expr_if.hpp @ 857

Revision 857, 986 bytes checked in by igarcia, 19 years ago (diff)
Line 
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_EXPR_IF_HPP
15# define BOOST_PREPROCESSOR_CONTROL_EXPR_IF_HPP
16#
17# include <boost/preprocessor/config/config.hpp>
18# include <boost/preprocessor/control/expr_iif.hpp>
19# include <boost/preprocessor/logical/bool.hpp>
20#
21# /* BOOST_PP_EXPR_IF */
22#
23# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
24#    define BOOST_PP_EXPR_IF(cond, expr) BOOST_PP_EXPR_IIF(BOOST_PP_BOOL(cond), expr)
25# else
26#    define BOOST_PP_EXPR_IF(cond, expr) BOOST_PP_EXPR_IF_I(cond, expr)
27#    define BOOST_PP_EXPR_IF_I(cond, expr) BOOST_PP_EXPR_IIF(BOOST_PP_BOOL(cond), expr)
28# endif
29#
30# endif
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