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