fc92081080
This uses the reverse of the polynomial used by the current crc_32 function. The code for this was derived from the implementation used by tinf. This version is space optimized and should be a good way to reduce code duplication in other parts of rockbox that use the same crc32 algorithm. This is mainly of use in areas where DEFLATE is in use. Change-Id: I918da5b4ea4dc441c0e7e6b5007abcc2da463bcb
30 lines
1.1 KiB
C
30 lines
1.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2003 Jörg Hohensohn [IDC]Dragon
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdint.h>
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#ifndef _CRC32_H
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#define _CRC32_H
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uint32_t crc_32(const void *src, uint32_t len, uint32_t crc32);
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uint32_t crc_32r(const void *src, uint32_t len, uint32_t crc32);
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#endif
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