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29 lines
532 B
C
29 lines
532 B
C
/*-
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* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
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* code or tables extracted from it, as desired without restriction.
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*
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* $FreeBSD$
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*/
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#ifndef _CRC32_H_
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#define _CRC32_H_
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#include <stdint.h> /* uint32_t */
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#include <stdlib.h> /* size_t */
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extern uint32_t crc32_tab[];
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static __inline uint32_t
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crc32(const void *buf, size_t size)
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{
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const uint8_t *p = buf;
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uint32_t crc;
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crc = ~0U;
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while (size--)
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crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
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return (crc ^ ~0U);
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}
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#endif /* !_CRC32_H_ */
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