iif.hpp

来自「boost库提供标准的C++ API 配合dev c++使用,功能更加强大」· HPP 代码 · 共 36 行

# /* **************************************************************************
#  *                                                                          *
#  *     (C) Copyright Paul Mensonides 2002.  Permission to copy, use,        *
#  *     modify, sell, and distribute this software is granted provided       *
#  *     this copyright notice appears in all copies.  This software is       *
#  *     provided "as is" without express or implied warranty, and with       *
#  *     no claim at to its suitability for any purpose.                      *
#  *                                                                          *
#  ************************************************************************** */
#
# /* See http://www.boost.org for most recent version. */
#
# ifndef BOOST_PREPROCESSOR_CONTROL_IIF_HPP
# define BOOST_PREPROCESSOR_CONTROL_IIF_HPP
#
# include <boost/preprocessor/config/config.hpp>
#
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
#    define BOOST_PP_IIF(bit, t, f) BOOST_PP_IIF_I(bit, t, f)
# else
#    define BOOST_PP_IIF(bit, t, f) BOOST_PP_IIF_OO((bit, t, f))
#    define BOOST_PP_IIF_OO(par) BOOST_PP_IIF_I ## par
# endif
#
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
#    define BOOST_PP_IIF_I(bit, t, f) BOOST_PP_IIF_ ## bit(t, f)
# else
#    define BOOST_PP_IIF_I(bit, t, f) BOOST_PP_IIF_II(BOOST_PP_IIF_ ## bit(t, f))
#    define BOOST_PP_IIF_II(id) id
# endif
#
# define BOOST_PP_IIF_0(t, f) f
# define BOOST_PP_IIF_1(t, f) t
#
# endif