ewf_crc.h
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ewf_crc.h
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	/*
	* EWF CRC handling
	*
	* Copyright (c) 2006-2009, Joachim Metz <forensics@hoffmannbv.nl>,
	* Hoffmann Investigations. All rights reserved.
	*
	* Refer to AUTHORS for acknowledgements.
	*
	* This software is free software: you can redistribute it and/or modify
	* it under the terms of the GNU Lesser General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	*
	* This software 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 Lesser General Public License
	* along with this software. If not, see <http://www.gnu.org/licenses/>.
	*/

	#if !defined( _EWF_CRC_H )
	#define _EWF_CRC_H

	#include <common.h>
	#include <types.h>

	#if defined( HAVE_ZLIB_H ) && defined( HAVE_LIBZ )
	#include <zlib.h>
	#endif

	#if defined( __cplusplus )
	extern "C" {
	#endif

	/* The unsigned crc type defintion
	* consists of 4 bytes (32 bits)
	*/
	typedef uint32_t ewf_crc_t;

	#define ewf_crc_calculate( buffer, size, previous_key ) \
	(ewf_crc_t) adler32( (uLong) previous_key, (const Bytef *) buffer, (uInt) size );

	#if defined( __cplusplus )
	}
	#endif

	#endif