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_SEQ_REST_N_HPP
13# define BOOST_PREPROCESSOR_SEQ_REST_N_HPP
14#
15# include <boost/preprocessor/arithmetic/inc.hpp>
16# include <boost/preprocessor/comparison/not_equal.hpp>
17# include <boost/preprocessor/config/config.hpp>
18# include <boost/preprocessor/control/expr_iif.hpp>
19# include <boost/preprocessor/facilities/identity.hpp>
20# include <boost/preprocessor/logical/bitand.hpp>
21# include <boost/preprocessor/seq/detail/is_empty.hpp>
22# include <boost/preprocessor/seq/detail/split.hpp>
23# include <boost/preprocessor/tuple/elem.hpp>
24#
25# /* BOOST_PP_SEQ_REST_N */
26#
27# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
28# define BOOST_PP_SEQ_REST_N(n, seq) BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, BOOST_PP_SEQ_DETAIL_EMPTY_SIZE(seq))
29# else
30# define BOOST_PP_SEQ_REST_N(n, seq) BOOST_PP_SEQ_REST_N_I(n, seq)
31# define BOOST_PP_SEQ_REST_N_I(n, seq) BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, BOOST_PP_SEQ_DETAIL_EMPTY_SIZE(seq))
32# endif
33#
34# define BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, size) \
35 BOOST_PP_EXPR_IIF \
36 ( \
37 BOOST_PP_BITAND \
38 ( \
39 BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY_SIZE(size), \
40 BOOST_PP_NOT_EQUAL(n,size) \
41 ), \
42 BOOST_PP_TUPLE_ELEM(2, 1, BOOST_PP_SEQ_SPLIT(BOOST_PP_INC(n), BOOST_PP_IDENTITY( (nil) seq )))() \
43 ) \
44/**/
45#
46# endif
47

source code of boost/boost/preprocessor/seq/rest_n.hpp