endian.h 1.4 KB

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  1. /* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. /* PowerPC can be little or big endian. Hopefully gcc will know... */
  16. #ifndef _ENDIAN_H
  17. # error "Never use <bits/endian.h> directly; include <endian.h> instead."
  18. #endif
  19. #if defined __BIG_ENDIAN__ || defined _BIG_ENDIAN
  20. # if defined __LITTLE_ENDIAN__ || defined _LITTLE_ENDIAN
  21. # error Both BIG_ENDIAN and LITTLE_ENDIAN defined!
  22. # endif
  23. # define __BYTE_ORDER __BIG_ENDIAN
  24. #else
  25. # if defined __LITTLE_ENDIAN__ || defined _LITTLE_ENDIAN
  26. # define __BYTE_ORDER __LITTLE_ENDIAN
  27. # else
  28. # warning Cannot determine current byte order, assuming big-endian.
  29. # define __BYTE_ORDER __BIG_ENDIAN
  30. # endif
  31. #endif