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101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/*
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*==========================================================================
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*
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* crc.h
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*
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* Interface for the CRC algorithms.
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*
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*==========================================================================
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*####ECOSGPLCOPYRIGHTBEGIN####
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* -------------------------------------------
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* This file is part of eCos, the Embedded Configurable Operating System.
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* Copyright (C) 2002 Andrew Lunn
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*
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* eCos is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 or (at your option) any later version.
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*
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* eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with eCos; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* As a special exception, if other files instantiate templates or use macros
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* or inline functions from this file, or you compile this file and link it
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* with other works to produce a work based on this file, this file does not
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* by itself cause the resulting work to be covered by the GNU General Public
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* License. However the source code for this file must still be made available
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* in accordance with section (3) of the GNU General Public License.
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*
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* This exception does not invalidate any other reasons why a work based on
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* this file might be covered by the GNU General Public License.
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*
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* Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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* at http: *sources.redhat.com/ecos/ecos-license/
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* -------------------------------------------
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*####ECOSGPLCOPYRIGHTEND####
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*==========================================================================
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*#####DESCRIPTIONBEGIN####
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*
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* Author(s): Andrew Lunn
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* Contributors: Andrew Lunn
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* Date: 2002-08-06
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* Purpose:
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* Description:
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*
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* This code is part of eCos (tm).
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*
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*####DESCRIPTIONEND####
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*
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*==========================================================================
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*/
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#ifndef _SERVICES_CRC_CRC_H_
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#define _SERVICES_CRC_CRC_H_
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#include <linux/types.h>
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#ifndef __externC
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# ifdef __cplusplus
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# define __externC extern "C"
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# else
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# define __externC extern
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# endif
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#endif
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/* Compute a CRC, using the POSIX 1003 definition */
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extern uint32_t
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cyg_posix_crc32(unsigned char *s, int len);
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/* Gary S. Brown's 32 bit CRC */
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extern uint32_t
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cyg_crc32(unsigned char *s, int len);
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/* Gary S. Brown's 32 bit CRC, but accumulate the result from a */
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/* previous CRC calculation */
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extern uint32_t
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cyg_crc32_accumulate(uint32_t crc, unsigned char *s, int len);
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/* Ethernet FCS Algorithm */
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extern uint32_t
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cyg_ether_crc32(unsigned char *s, int len);
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/* Ethernet FCS algorithm, but accumulate the result from a previous */
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/* CRC calculation. */
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extern uint32_t
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cyg_ether_crc32_accumulate(uint32_t crc, unsigned char *s, int len);
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/* 16 bit CRC with polynomial x^16+x^12+x^5+1 */
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extern uint16_t cyg_crc16(unsigned char *s, int len);
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#endif /* _SERVICES_CRC_CRC_H_ */
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