crc_macros.h

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//
//
//  Author:     Lasse Collin
//
//  This file has been put into the public domain.
//  You can do whatever you want with this file.
//
 
#ifdef WORDS_BIGENDIAN
#   define A(x) ((x) >> 24)
#   define B(x) (((x) >> 16) & 0xFF)
#   define C(x) (((x) >> 8) & 0xFF)
#   define D(x) ((x) & 0xFF)
 
#   define S8(x) ((x) << 8)
#   define S32(x) ((x) << 32)
 
#else
#   define A(x) ((x) & 0xFF)
#   define B(x) (((x) >> 8) & 0xFF)
#   define C(x) (((x) >> 16) & 0xFF)
#   define D(x) ((x) >> 24)
 
#   define S8(x) ((x) >> 8)
#   define S32(x) ((x) >> 32)
#endif