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Updated arithmetic implementations to deal with corner cases whichy run out of WHILE loops.

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Edward Diener
2020-06-09 20:54:12 -04:00
parent d41d1dda97
commit 13c9669410
6 changed files with 80 additions and 28 deletions
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17
include/boost/preprocessor/arithmetic/add.hpp
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@ -20,12 +20,17 @@
# include <boost/preprocessor/control/iif.hpp>
# include <boost/preprocessor/control/while.hpp>
# include <boost/preprocessor/facilities/identity.hpp>
# include <boost/preprocessor/logical/bitand.hpp>
# include <boost/preprocessor/logical/bitor.hpp>
# include <boost/preprocessor/logical/bool.hpp>
# include <boost/preprocessor/logical/compl.hpp>
# include <boost/preprocessor/tuple/elem.hpp>
# include <boost/preprocessor/arithmetic/detail/is_maximum_number.hpp>
# include <boost/preprocessor/arithmetic/detail/is_minimum_number.hpp>
#
# /* BOOST_PP_ADD */
#
# define BOOST_PP_ADD(x, y) BOOST_PP_IIF(BOOST_PP_DETAIL_IS_MAXIMUM_NUMBER(y),BOOST_PP_IDENTITY_N(BOOST_PP_DETAIL_MAXIMUM_NUMBER,2),BOOST_PP_ADD_DO)(x,y)
# define BOOST_PP_ADD(x, y) BOOST_PP_IIF(BOOST_PP_BITOR(BOOST_PP_DETAIL_IS_MAXIMUM_NUMBER(y),BOOST_PP_DETAIL_IS_MINIMUM_NUMBER(x)),BOOST_PP_IDENTITY_N(y,2),BOOST_PP_ADD_DO)(x,y)
#
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
# define BOOST_PP_ADD_DO(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
@ -34,7 +39,7 @@
# define BOOST_PP_ADD_I(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
# endif
#
# define BOOST_PP_ADD_P(d, xy) BOOST_PP_TUPLE_ELEM(2, 1, xy)
# define BOOST_PP_ADD_P(d, xy) BOOST_PP_BITAND(BOOST_PP_BOOL(BOOST_PP_TUPLE_ELEM(2, 1, xy)),BOOST_PP_COMPL(BOOST_PP_DETAIL_IS_MAXIMUM_NUMBER(BOOST_PP_TUPLE_ELEM(2, 0, xy))))
#
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
# define BOOST_PP_ADD_O(d, xy) BOOST_PP_ADD_O_I xy
@ -46,13 +51,13 @@
#
# /* BOOST_PP_ADD_D */
#
# define BOOST_PP_ADD_D(d, x, y) BOOST_PP_IIF(BOOST_PP_DETAIL_IS_MAXIMUM_NUMBER(y),BOOST_PP_IDENTITY_N(BOOST_PP_DETAIL_MAXIMUM_NUMBER,3),BOOST_PP_ADD_D_DO)(d,x,y)
# define BOOST_PP_ADD_D(d, x, y) BOOST_PP_IIF(BOOST_PP_BITOR(BOOST_PP_DETAIL_IS_MAXIMUM_NUMBER(y),BOOST_PP_DETAIL_IS_MINIMUM_NUMBER(x)),BOOST_PP_IDENTITY_N(y,3),BOOST_PP_ADD_DO_D)(d,x,y)
#
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
# define BOOST_PP_ADD_D_DO(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
# define BOOST_PP_ADD_DO_D(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
# else
# define BOOST_PP_ADD_D_DO(d, x, y) BOOST_PP_ADD_D_DO_I(d, x, y)
# define BOOST_PP_ADD_D_DO_I(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
# define BOOST_PP_ADD_DO_D(d, x, y) BOOST_PP_ADD_D_I(d, x, y)
# define BOOST_PP_ADD_D_I(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
# endif
#
# endif