| Current Path : /usr/src/sbin/hastd/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/sbin/hastd/crc32.h |
/*-
* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
* code or tables extracted from it, as desired without restriction.
*
* $FreeBSD: release/9.1.0/sbin/hastd/crc32.h 219351 2011-03-06 22:56:14Z pjd $
*/
#ifndef _CRC32_H_
#define _CRC32_H_
#include <stdint.h> /* uint32_t */
#include <stdlib.h> /* size_t */
extern uint32_t crc32_tab[];
static __inline uint32_t
crc32(const void *buf, size_t size)
{
const uint8_t *p = buf;
uint32_t crc;
crc = ~0U;
while (size--)
crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
return (crc ^ ~0U);
}
#endif /* !_CRC32_H_ */