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O(N*N) space and O(1) time BOOST_PP_TUPLE_ELEM()

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[SVN r14149]
This commit is contained in:
Vesa Karvonen
2002-06-16 08:06:36 +00:00
parent 54d0da5221
commit 8854c2c573
19 changed files with 81 additions and 276 deletions
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10
include/boost/preprocessor/arithmetic/sub.hpp
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@ -34,11 +34,7 @@ single token).</p>
/** <p>Can be used inside BOOST_PP_WHILE() (see for an explanation of the D parameter).</p> */
#define BOOST_PP_SUB_D(D,X,Y) BOOST_PP_TUPLE_ELEM(2,0,BOOST_PP_WHILE##D(BOOST_PP_SUB_C,BOOST_PP_SUB_F,(X,Y)))
#if !defined(BOOST_NO_COMPILER_CONFIG) && defined(__MWERKS__)
# define BOOST_PP_SUB_C(D,RC) BOOST_PP_TUPLE_ELEM(2,1,RC)
# define BOOST_PP_SUB_F(D,RC) (BOOST_PP_DEC(BOOST_PP_TUPLE_ELEM(2,0,RC)),BOOST_PP_DEC(BOOST_PP_TUPLE_ELEM(2,1,RC)))
#else
# define BOOST_PP_SUB_C(D,RC) BOOST_PP_TUPLE2_ELEM1 RC
# define BOOST_PP_SUB_F(D,RC) (BOOST_PP_DEC(BOOST_PP_TUPLE2_ELEM0 RC),BOOST_PP_DEC(BOOST_PP_TUPLE2_ELEM1 RC))
#endif
#define BOOST_PP_SUB_C(D,RC) BOOST_PP_TUPLE_ELEM(2,1,RC)
#define BOOST_PP_SUB_F(D,RC) (BOOST_PP_DEC(BOOST_PP_TUPLE_ELEM(2,0,RC)),BOOST_PP_DEC(BOOST_PP_TUPLE_ELEM(2,1,RC)))
#endif