endianlove.h

   1 /*
   2  *  endianlove.h
   3  *  openc2e
   4  *
   5  *  Created by Alyssa Milburn on Sat May 22 2004.
   6  *  Copyright (c) 2004 Alyssa Milburn. All rights reserved.
   7  *
   8  *  This library is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU Lesser General Public
  10  *  License as published by the Free Software Foundation; either
  11  *  version 2 of the License, or (at your option) any later version.
  12  *
  13  *  This library is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  Lesser General Public License for more details.
  17  *
  18  */
  19
  20 #ifndef _ENDIANLOVE_H
  21 #define _ENDIANLOVE_H
  22
  23 #include <stdlib.h> // load the standard libraries for these defines
  24
  25 #ifndef HAVE_STDINT
  26
  27 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
  28 # define HAVE_STDINT 1
  29 #else
  30 # if defined(__GNUC_PREREQ) && __GNUC_PREREQ(4,0)
  31 #  define HAVE_STDINT 1
  32 # else
  33 #  define HAVE_STDINT 0
  34 # endif
  35 #endif
  36
  37 #endif
  38
  39 #if HAVE_STDINT
  40
  41 #include <stdint.h>
  42
  43 typedef uint8_t uint8;
  44 typedef uint16_t uint16;
  45 typedef uint32_t uint32;
  46
  47 #else
  48
  49 typedef unsigned char uint8;
  50 typedef unsigned short uint16;
  51 typedef unsigned int uint32;
  52
  53 #endif
  54
  55 /* endianism checking - this will break on a bunch of platforms, someone else tidy it up, love fuzzie */
  56
  57 #ifdef __GNU__
  58  #include <endian.h>
  59 #endif
  60 #if __BYTE_ORDER == __LITTLE_ENDIAN || defined(_MSC_VER) || defined(__i386__)
  61  #define __C2E_LITTLEENDIAN
  62 #else
  63  #define __C2E_BIGENDIAN
  64 #endif
  65
  66 #ifdef __C2E_LITTLEENDIAN
  67
  68 #define swapEndianShort(A) A
  69 #define swapEndianLong(A) A
  70
  71 #else
  72
  73 #define swapEndianShort(A)  ((((uint16)(A) & 0xff00) >> 8) | \
  74                                    (((uint16)(A) & 0x00ff) << 8))
  75 #define swapEndianLong(A)  ((((uint32)(A) & 0xff000000) >> 24) | \
  76                                    (((uint32)(A) & 0x00ff0000) >> 8)  | \
  77                                    (((uint32)(A) & 0x0000ff00) << 8)  | \
  78                                    (((uint32)(A) & 0x000000ff) << 24))
  79
  80 #endif
  81
  82 #endif // _ENDIANLOVE_H
  83
  84 /* vim: set noet: */