deduce_d.hpp 1.7 KB

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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. # /* Revised by Edward Diener (2020) */
  11. #
  12. # /* See http://www.boost.org for most recent version. */
  13. #
  14. # ifndef BOOST_PREPROCESSOR_CONTROL_DEDUCE_D_HPP
  15. # define BOOST_PREPROCESSOR_CONTROL_DEDUCE_D_HPP
  16. #
  17. # include <boost/preprocessor/config/config.hpp>
  18. #
  19. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
  20. #
  21. # include <boost/preprocessor/control/while.hpp>
  22. # include <boost/preprocessor/detail/auto_rec.hpp>
  23. #
  24. # /* BOOST_PP_DEDUCE_D */
  25. #
  26. # define BOOST_PP_DEDUCE_D() BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 256)
  27. #
  28. # else
  29. #
  30. # include <boost/preprocessor/arithmetic/dec.hpp>
  31. # include <boost/preprocessor/control/while.hpp>
  32. # include <boost/preprocessor/detail/auto_rec.hpp>
  33. # include <boost/preprocessor/config/limits.hpp>
  34. #
  35. # /* BOOST_PP_DEDUCE_D */
  36. #
  37. # if BOOST_PP_LIMIT_WHILE == 256
  38. # define BOOST_PP_DEDUCE_D() BOOST_PP_DEC(BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 256))
  39. # elif BOOST_PP_LIMIT_WHILE == 512
  40. # define BOOST_PP_DEDUCE_D() BOOST_PP_DEC(BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 512))
  41. # elif BOOST_PP_LIMIT_WHILE == 1024
  42. # define BOOST_PP_DEDUCE_D() BOOST_PP_DEC(BOOST_PP_AUTO_REC(BOOST_PP_WHILE_P, 1024))
  43. # else
  44. # error Incorrect value for the BOOST_PP_LIMIT_WHILE limit
  45. # endif
  46. #
  47. # endif
  48. #
  49. # endif