client/src/proxendian.h

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 Hector Martin "marcan" <marcan@marcansoft.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Endianness convenience functions
   9 //-----------------------------------------------------------------------------
  10
  11 #ifndef PROXENDIAN_H__
  12 #define PROXENDIAN_H__
  13
  14 #include "common.h"
  15
  16 #ifdef _WIN32
  17 # define HOST_LITTLE_ENDIAN
  18 #else
  19 // Only some OSes include endian.h from sys/types.h, not Termux, so let's include endian.h directly
  20 # if defined(__APPLE__)
  21 #  include <machine/endian.h>
  22 # else
  23 #  include <endian.h>
  24 # endif
  25 # if !defined(BYTE_ORDER)
  26 #  if !defined(__BYTE_ORDER) || (__BYTE_ORDER != __LITTLE_ENDIAN && __BYTE_ORDER != __BIG_ENDIAN)
  27 #   error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
  28 #  endif
  29 #  if __BYTE_ORDER == __LITTLE_ENDIAN
  30 #   define HOST_LITTLE_ENDIAN
  31 #  endif
  32 # else
  33 #  if BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN
  34 #   error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
  35 #  endif
  36 #  if BYTE_ORDER == LITTLE_ENDIAN
  37 #   define HOST_LITTLE_ENDIAN
  38 #  endif
  39 # endif
  40 #endif
  41
  42 #ifdef HOST_LITTLE_ENDIAN
  43 # define le16(x) (x)
  44 # define le32(x) (x)
  45 #else
  46
  47 static inline uint16_t le16(uint16_t v) {
  48     return (v >> 8) | (v << 8);
  49 }
  50
  51 static inline uint32_t le32(uint32_t v) {
  52     return (le16(v) << 16) | (le16(v >> 16));
  53 }
  54 #endif // HOST_LITTLE_ENDIAN
  55
  56 #endif // PROXENDIAN_H__