/*---------------------------------------------------------------------------*
*
* BinkleyTerm
*
* (C) Copyright 1987-96, Bit Bucket Software Co.
* For license and contact information see /doc/orig_260/license.260.
*
* This version was modified by the BinkleyTerm XE Team.
* For contact information see /doc/team.lst and /doc/join.us.
* For a complete list of changes see /doc/xe_user.doc and /doc/xe_hist.doc.
*
* Filename : $Source: /cvsroot/btxe/btnt/sources/aglcrc.h,v $
* Revision : $Revision: 1.1 $
* Tagname : $Name: $
* Last updated: $Date: 2005/01/01 15:18:10 $
* State : $State: Exp $
* Orig. Author: Arjen Lentz, contributed by Michael Buenter
*
* Description : Hydra CRC definitions for BinkleyTerm
*
* Note :
*
* Routines for table driven CRC-16 & CRC-32, including building tables
* Refer to CRC.DOC for information and documentation.
*
* Information collected and edited by Arjen G. Lentz
* Sourcecode in C and 80x86 ASM written by Arjen G. Lentz
* COPYRIGHT (C) 1992-1993; ALL RIGHTS RESERVED
*
* CONTACT ADDRESS
*
* LENTZ SOFTWARE-DEVELOPMENT Arjen Lentz @
* Langegracht 7B AINEX-BBS +31-33-633916
* 3811 BT Amersfoort FidoNet 2:283/512
* The Netherlands arjen_lentz@f512.n283.z2.fidonet.org
*
* DISCLAIMER
*
* This information is provided "as is" and comes with no warranties of
* any kind, either expressed or implied. It's intended to be used by
* programmers and developers. In no event shall the author be liable to
* you or anyone else for any damages, including any lost profits, lost
* savings or other incidental or consequential damages arising out of the
* use or inability to use this information.
*
* LICENCE
*
* This package may be freely distributed provided the files remain
* together, in their original unmodified form.
* All files, executables and sourcecode remain the copyrighted property
* of Arjen G. Lentz and LENTZ SOFTWARE-DEVELOPMENT.
* Licence for any use granted, provided this notice & CRC.DOC are
* included. For executable applications, credit should be given in the
* appropriate places in the program and documentation.
* These notices must be retained in any copies of any part of this
* documentation and/or software.
*
* Any use of, or operation on (including copying/distributing) any of
* the above mentioned files implies full and unconditional acceptance of
* this licence and disclaimer.
*
*---------------------------------------------------------------------------*/
#ifndef __CRC_DEF_
#define __CRC_DEF_
/*#include "2types.h" */
#ifndef FAR
#ifdef __MSDOS__
# if defined(__TINY__) || defined(__SMALL__) || defined(__MEDIUM__)
# define FAR far
# else
# define FAR
# endif
#else
# define FAR
#endif
#endif
#ifdef __cplusplus
extern "C"
{
#endif
/* --------------------------------------------------------------------- */
/* CRC-16 used by ARC and LH, use crc16___ routines */
/* --------------------------------------------------------------------- */
#define CRC16APOLY (0xA001) /* Generator polynomial number */
#define CRC16AINIT (0) /* Initial CRC value for calculation */
#define CRC16APOST(crc) (crc) /* CRC Postconditioning before xmit */
#define CRC16ATEST (0) /* Result to test for at receiver */
/* --------------------------------------------------------------------- */
/* CRC-16 CCITT proper */
/* --------------------------------------------------------------------- */
#define CRC16POLY (0x8408) /* Generator polynomial number */
#define CRC16INIT (0xFFFF) /* Initial CRC value for calculation */
#define CRC16POST(crc) (~(crc)) /* CRC Postconditioning before xmit */
#define CRC16TEST (0xF0B8) /* Result to test for at receiver */
/* --------------------------------------------------------------------- */
/* CRC-16 CCITT upside-down */
/* --------------------------------------------------------------------- */
#define CRC16RPOLY (0x1021) /* Generator polynomial number */
#define CRC16RINIT (0) /* Initial CRC value for calculation */
#define CRC16RPOST(crc) (crc) /* CRC Postconditioning before xmit */
#define CRC16RTEST (0) /* Result to test for at receiver */
/* --------------------------------------------------------------------- */
/* CRC-32 CCITT */
/* --------------------------------------------------------------------- */
#define CRC32POLY (0xEDB88320L) /* Generator polynomial number */
#define CRC32INIT (0xFFFFFFFFL) /* Initial CRC value for calculation */
#define CRC32POST(crc) (~(crc)) /* CRC Postconditioning before xmit */
#define CRC32TEST (0xDEBB20E3L) /* Result to test for at receiver */
/* --------------------------------------------------------------------- */
/* Number of items in CRC table */
/* --------------------------------------------------------------------- */
#ifndef CRC_TINY
#define CRC_TABSIZE (256) /* Normal 256-entry table */
#else
#define CRC_TABSIZE (2 * 16) /* Tiny 2x16-entry table */
#endif
/* --------------------------------------------------------------------- */
/* CRC-16 proper, used for both CCITT and the one used by ARC */
/* --------------------------------------------------------------------- */
/* MR 961103: added cdecl */
void cdecl crc16init (word FAR * crctab, word poly);
/* MR 961103: added cdecl */
word cdecl crc16block (word FAR * crctab, word crc, byte FAR * buf, word len);
#ifndef CRC_TINY
#define crc16upd(crctab,crc,c) ((crctab)[((crc) ^ (c)) & 0xff] ^ ((crc) >> 8))
#else
word crc16upd (word FAR * crctab, word crc, byte c);
#endif
#ifndef CRC_TINY
#define crc16rupd(crctab,crc,c) ((crctab)[(((crc) >> 8) ^ (c)) & 0xff] ^ ((crc) << 8))
#else
word crc16rupd (word FAR * crctab, word crc, byte c);
#endif
/* --------------------------------------------------------------------- */
/* CRC-32 */
/* --------------------------------------------------------------------- */
/* MR 961103: added cdecl */
/* MR 961103: crc32int commented out (see modification of aglcrc.c
* done by TJW 960522) */
/* void cdecl crc32init (ULONG FAR * crctab, ULONG poly); */
/* MR 961103: added cdecl */
ULONG cdecl crc32block (ULONG FAR * crctab, ULONG crc, byte FAR * buf, word len);
#ifndef CRC_TINY
#define crc32upd(crctab,crc,c) ((crctab)[((int) (crc) ^ (c)) & 0xff] ^ ((crc) >> 8))
#else
ULONG crc32upd (ULONG FAR * crctab, ULONG crc, byte c);
#endif
#ifdef __cplusplus
}
#endif
#endif /* __CRC_DEF_ */
/* $Id: aglcrc.h,v 1.1 2005/01/01 15:18:10 vildanov Exp $ */
