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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 |