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127 lines
5.2 KiB
C
Executable File
127 lines
5.2 KiB
C
Executable File
/*
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---------------------------------------------------------------------------
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Copyright (c) 1998-2010, Brian Gladman, Worcester, UK. All rights reserved.
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The redistribution and use of this software (with or without changes)
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is allowed without the payment of fees or royalties provided that:
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source code distributions include the above copyright notice, this
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list of conditions and the following disclaimer;
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binary distributions include the above copyright notice, this list
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of conditions and the following disclaimer in their documentation.
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This software is provided 'as is' with no explicit or implied warranties
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in respect of its operation, including, but not limited to, correctness
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and fitness for purpose.
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---------------------------------------------------------------------------
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Issue Date: 20/12/2007
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*/
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#ifndef _BRG_ENDIAN_H
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#define _BRG_ENDIAN_H
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#define IS_BIG_ENDIAN 4321 /* byte 0 is most significant (mc68k) */
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#define IS_LITTLE_ENDIAN 1234 /* byte 0 is least significant (i386) */
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/* Include files where endian defines and byteswap functions may reside */
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#if defined( __sun )
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# include <sys/isa_defs.h>
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#elif defined( __FreeBSD__ ) || defined( __OpenBSD__ ) || defined( __NetBSD__ )
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# include <sys/endian.h>
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#elif defined( BSD ) && ( BSD >= 199103 ) || defined( __APPLE__ ) || \
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defined( __CYGWIN32__ ) || defined( __DJGPP__ ) || defined( __osf__ )
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# include <machine/endian.h>
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#elif defined( __linux__ ) || defined( __GNUC__ ) || defined( __GNU_LIBRARY__ )
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# if !defined( __MINGW32__ ) && !defined( _AIX )
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# include <endian.h>
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# if !defined( __BEOS__ )
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# include <byteswap.h>
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# endif
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# endif
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#endif
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/* Now attempt to set the define for platform byte order using any */
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/* of the four forms SYMBOL, _SYMBOL, __SYMBOL & __SYMBOL__, which */
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/* seem to encompass most endian symbol definitions */
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#if defined( BIG_ENDIAN ) && defined( LITTLE_ENDIAN )
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# if defined( BYTE_ORDER ) && BYTE_ORDER == BIG_ENDIAN
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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# elif defined( BYTE_ORDER ) && BYTE_ORDER == LITTLE_ENDIAN
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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# endif
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#elif defined( BIG_ENDIAN )
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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#elif defined( LITTLE_ENDIAN )
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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#endif
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#if defined( _BIG_ENDIAN ) && defined( _LITTLE_ENDIAN )
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# if defined( _BYTE_ORDER ) && _BYTE_ORDER == _BIG_ENDIAN
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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# elif defined( _BYTE_ORDER ) && _BYTE_ORDER == _LITTLE_ENDIAN
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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# endif
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#elif defined( _BIG_ENDIAN )
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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#elif defined( _LITTLE_ENDIAN )
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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#endif
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#if defined( __BIG_ENDIAN ) && defined( __LITTLE_ENDIAN )
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# if defined( __BYTE_ORDER ) && __BYTE_ORDER == __BIG_ENDIAN
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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# elif defined( __BYTE_ORDER ) && __BYTE_ORDER == __LITTLE_ENDIAN
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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# endif
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#elif defined( __BIG_ENDIAN )
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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#elif defined( __LITTLE_ENDIAN )
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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#endif
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#if defined( __BIG_ENDIAN__ ) && defined( __LITTLE_ENDIAN__ )
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# if defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __BIG_ENDIAN__
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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# elif defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __LITTLE_ENDIAN__
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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# endif
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#elif defined( __BIG_ENDIAN__ )
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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#elif defined( __LITTLE_ENDIAN__ )
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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#endif
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/* if the platform byte order could not be determined, then try to */
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/* set this define using common machine defines */
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#if !defined(PLATFORM_BYTE_ORDER)
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#if defined( __alpha__ ) || defined( __alpha ) || defined( i386 ) || \
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defined( __i386__ ) || defined( _M_I86 ) || defined( _M_IX86 ) || \
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defined( __OS2__ ) || defined( sun386 ) || defined( __TURBOC__ ) || \
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defined( vax ) || defined( vms ) || defined( VMS ) || \
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defined( __VMS ) || defined( _M_X64 )
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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#elif defined( AMIGA ) || defined( applec ) || defined( __AS400__ ) || \
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defined( _CRAY ) || defined( __hppa ) || defined( __hp9000 ) || \
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defined( ibm370 ) || defined( mc68000 ) || defined( m68k ) || \
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defined( __MRC__ ) || defined( __MVS__ ) || defined( __MWERKS__ ) || \
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defined( sparc ) || defined( __sparc) || defined( SYMANTEC_C ) || \
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defined( __VOS__ ) || defined( __TIGCC__ ) || defined( __TANDEM ) || \
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defined( THINK_C ) || defined( __VMCMS__ ) || defined( _AIX )
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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#elif 0 /* **** EDIT HERE IF NECESSARY **** */
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# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
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#elif 0 /* **** EDIT HERE IF NECESSARY **** */
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# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
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#else
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# error Please edit lines 126 or 128 in brg_endian.h to set the platform byte order
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#endif
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#endif
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#endif
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