106 lines
3.7 KiB
C
106 lines
3.7 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, 2009 Free Software Foundation, Inc.
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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
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY 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
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public 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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#ifndef _SERVICES_CRC_CRC_H_
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#define _SERVICES_CRC_CRC_H_
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#include <cyg/infra/cyg_type.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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__externC cyg_uint32
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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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__externC cyg_uint32
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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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__externC cyg_uint32
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cyg_crc32_accumulate(cyg_uint32 crc, unsigned char *s, int len);
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// Ethernet FCS Algorithm
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__externC cyg_uint32
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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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__externC cyg_uint32
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cyg_ether_crc32_accumulate(cyg_uint32 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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__externC cyg_uint16
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cyg_crc16(unsigned char *s, int len);
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__externC cyg_uint16
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cyg_crc16_accumulate(cyg_uint16 crc, unsigned char *s, int len);
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#endif // _SERVICES_CRC_CRC_H_
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