order.hpp 1.4 KB

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  1. #ifndef BOOST_ENDIAN_DETAIL_ORDER_HPP_INCLUDED
  2. #define BOOST_ENDIAN_DETAIL_ORDER_HPP_INCLUDED
  3. // Copyright 2019 Peter Dimov
  4. //
  5. // Distributed under the Boost Software License, Version 1.0.
  6. // http://www.boost.org/LICENSE_1_0.txt
  7. #if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
  8. # define BOOST_ENDIAN_NATIVE_ORDER_INITIALIZER little
  9. #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
  10. # define BOOST_ENDIAN_NATIVE_ORDER_INITIALIZER big
  11. #elif defined(__BYTE_ORDER__) && defined(__ORDER_PDP_ENDIAN__) && __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
  12. # error The Boost.Endian library does not support platforms with PDP endianness.
  13. #elif defined(__LITTLE_ENDIAN__)
  14. # define BOOST_ENDIAN_NATIVE_ORDER_INITIALIZER little
  15. #elif defined(__BIG_ENDIAN__)
  16. # define BOOST_ENDIAN_NATIVE_ORDER_INITIALIZER big
  17. #elif defined(_MSC_VER) || defined(__i386__) || defined(__x86_64__)
  18. # define BOOST_ENDIAN_NATIVE_ORDER_INITIALIZER little
  19. #else
  20. # error The Boost.Endian library could not determine the endianness of this platform.
  21. #endif
  22. namespace boost
  23. {
  24. namespace endian
  25. {
  26. enum class order
  27. {
  28. big,
  29. little,
  30. native = BOOST_ENDIAN_NATIVE_ORDER_INITIALIZER
  31. };
  32. } // namespace endian
  33. } // namespace boost
  34. #undef BOOST_ENDIAN_NATIVE_ORDER_INITIALIZER
  35. #endif // BOOST_ENDIAN_DETAIL_ORDER_HPP_INCLUDED