~ubuntu-branches/ubuntu/karmic/muse/karmic-proposed

//=========================================================

//  MusE

//  Linux Music Editor

//  $Id: sfendian.h,v 1.2 2001/11/20 15:19:34 muse Exp $

//

//  (C) Copyright 2001 Werner Schweer (ws@seh.de)

//  based on libsndfile:

//  Copyright (C) 1999-2000 Erik de Castro Lopo <erikd@zip.com.au>

//=========================================================

 

#include        <endian.h>

        #if (__BYTE_ORDER == __LITTLE_ENDIAN)

                #define CPU_IS_LITTLE_ENDIAN            1

                #define CPU_IS_BIG_ENDIAN                       0

        #elif (__BYTE_ORDER == __BIG_ENDIAN)

                #define CPU_IS_LITTLE_ENDIAN            0

                #define CPU_IS_BIG_ENDIAN                       1

        #else

                #error "A bit confused about endian-ness! Have <endian.h> but not __BYTEORDER."

        #endif

 

#define         ENDSWAP_SHORT(x)                        ((((x)>>8)&0xFF)|(((x)&0xFF)<<8))

#define         ENDSWAP_INT(x)                          ((((x)>>24)&0xFF)|(((x)>>8)&0xFF00)|(((x)&0xFF00)<<8)|(((x)&0xFF)<<24))

 

#if (CPU_IS_LITTLE_ENDIAN == 1)

        #define H2LE_SHORT(x)                           (x)

        #define H2LE_INT(x)                                     (x)

        #define LE2H_SHORT(x)                           (x)

        #define LE2H_INT(x)                                     (x)

 

        #define BE2H_INT(x)                                     ENDSWAP_INT(x)

        #define BE2H_SHORT(x)                           ENDSWAP_SHORT(x)

        #define H2BE_INT(x)                                     ENDSWAP_INT(x)

        #define H2BE_SHORT(x)                           ENDSWAP_SHORT(x)

 

#elif (CPU_IS_BIG_ENDIAN == 1)

        #define H2LE_SHORT(x)                           ENDSWAP_SHORT(x)

        #define H2LE_INT(x)                                     ENDSWAP_INT(x)

        #define LE2H_SHORT(x)                           ENDSWAP_SHORT(x)

        #define LE2H_INT(x)                                     ENDSWAP_INT(x)

 

        #define BE2H_INT(x)                                     (x)

        #define BE2H_SHORT(x)                           (x)

        #define H2BE_INT(x)                                     (x)

        #define H2BE_SHORT(x)                           (x)

 

#else

        #error "Cannot determine endian-ness of processor."

#endif