src/core/endian_func.hpp

   1 /*
   2  * This file is part of OpenTTD.
   3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   6  */
   7
   8 /** @file endian_func.hpp Function to handling different endian machines. */
   9
  10 #ifndef ENDIAN_FUNC_HPP
  11 #define ENDIAN_FUNC_HPP
  12
  13 #include "endian_type.hpp"
  14 #include "bitmath_func.hpp"
  15
  16 /* Setup alignment and conversion macros */
  17 #if TTD_ENDIAN == TTD_BIG_ENDIAN
  18 #       define FROM_BE16(x) (x)
  19 #       define FROM_BE32(x) (x)
  20 #       define TO_BE16(x)   (x)
  21 #       define TO_BE32(x)   (x)
  22 #       define TO_BE32X(x)  (x)
  23 #       define FROM_LE16(x) BSWAP16(x)
  24 #       define FROM_LE32(x) BSWAP32(x)
  25 #       define TO_LE16(x)   BSWAP16(x)
  26 #       define TO_LE32(x)   BSWAP32(x)
  27 #       define TO_LE32X(x)  BSWAP32(x)
  28 #else
  29 #       define FROM_BE16(x) BSWAP16(x)
  30 #       define FROM_BE32(x) BSWAP32(x)
  31 #       define TO_BE16(x)   BSWAP16(x)
  32 #       define TO_BE32(x)   BSWAP32(x)
  33 #       define TO_BE32X(x)  BSWAP32(x)
  34 #       define FROM_LE16(x) (x)
  35 #       define FROM_LE32(x) (x)
  36 #       define TO_LE16(x)   (x)
  37 #       define TO_LE32(x)   (x)
  38 #       define TO_LE32X(x)  (x)
  39 #endif /* TTD_ENDIAN == TTD_BIG_ENDIAN */
  40
  41 #endif /* ENDIAN_FUNC_HPP */