mul.hpp 2.0 KB

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  1. # /* Copyright (C) 2001
  2. # * Housemarque Oy
  3. # * http://www.housemarque.com
  4. # *
  5. # * Distributed under the Boost Software License, Version 1.0. (See
  6. # * accompanying file LICENSE_1_0.txt or copy at
  7. # * http://www.boost.org/LICENSE_1_0.txt)
  8. # */
  9. #
  10. # /* Revised by Paul Mensonides (2002) */
  11. #
  12. # /* See http://www.boost.org for most recent version. */
  13. #
  14. # ifndef BOOST_PREPROCESSOR_ARITHMETIC_MUL_HPP
  15. # define BOOST_PREPROCESSOR_ARITHMETIC_MUL_HPP
  16. #
  17. # include <boost/preprocessor/arithmetic/add.hpp>
  18. # include <boost/preprocessor/arithmetic/dec.hpp>
  19. # include <boost/preprocessor/config/config.hpp>
  20. # include <boost/preprocessor/control/while.hpp>
  21. # include <boost/preprocessor/tuple/elem.hpp>
  22. # include <boost/preprocessor/tuple/rem.hpp>
  23. #
  24. # /* BOOST_PP_MUL */
  25. #
  26. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  27. # define BOOST_PP_MUL(x, y) BOOST_PP_TUPLE_ELEM(3, 0, BOOST_PP_WHILE(BOOST_PP_MUL_P, BOOST_PP_MUL_O, (0, x, y)))
  28. # else
  29. # define BOOST_PP_MUL(x, y) BOOST_PP_MUL_I(x, y)
  30. # define BOOST_PP_MUL_I(x, y) BOOST_PP_TUPLE_ELEM(3, 0, BOOST_PP_WHILE(BOOST_PP_MUL_P, BOOST_PP_MUL_O, (0, x, y)))
  31. # endif
  32. #
  33. # define BOOST_PP_MUL_P(d, rxy) BOOST_PP_TUPLE_ELEM(3, 2, rxy)
  34. #
  35. # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
  36. # define BOOST_PP_MUL_O(d, rxy) BOOST_PP_MUL_O_IM(d, BOOST_PP_TUPLE_REM_3 rxy)
  37. # define BOOST_PP_MUL_O_IM(d, im) BOOST_PP_MUL_O_I(d, im)
  38. # else
  39. # define BOOST_PP_MUL_O(d, rxy) BOOST_PP_MUL_O_I(d, BOOST_PP_TUPLE_ELEM(3, 0, rxy), BOOST_PP_TUPLE_ELEM(3, 1, rxy), BOOST_PP_TUPLE_ELEM(3, 2, rxy))
  40. # endif
  41. #
  42. # define BOOST_PP_MUL_O_I(d, r, x, y) (BOOST_PP_ADD_D(d, r, x), x, BOOST_PP_DEC(y))
  43. #
  44. # /* BOOST_PP_MUL_D */
  45. #
  46. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  47. # define BOOST_PP_MUL_D(d, x, y) BOOST_PP_TUPLE_ELEM(3, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_MUL_P, BOOST_PP_MUL_O, (0, x, y)))
  48. # else
  49. # define BOOST_PP_MUL_D(d, x, y) BOOST_PP_MUL_D_I(d, x, y)
  50. # define BOOST_PP_MUL_D_I(d, x, y) BOOST_PP_TUPLE_ELEM(3, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_MUL_P, BOOST_PP_MUL_O, (0, x, y)))
  51. # endif
  52. #
  53. # endif