40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* This file is part of REWise.
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*
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* REWise is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* REWise is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License 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 this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef H_REWISE_CRC32
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#define H_REWISE_CRC32
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#include <stdint.h>
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// https://wiki.osdev.org/CRC32
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#define CRC32_SEED 0xedb88320
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#define CRC32_NEW 0xffffffff
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uint32_t crc32Finalize(uint32_t value);
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uint32_t crc32UpdateByte(uint32_t value, unsigned char byte);
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uint32_t crc32Update(uint32_t value, unsigned char * buff, uint32_t size);
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#ifdef REWISE_DEV_DEBUG
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// Don't use these, they where used to generate the lookup table.
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// Preserve to give insight on how the 'CRC32_LOOKUP' array is build.
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void crc32BuildTable(void);
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void crc32PrintTable(void);
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#endif
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#endif
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