[u-boot.git] / fs / ubifs / crc16.h

/*
 *	crc16.h - CRC-16 routine
 *
 * Implements the standard CRC-16:
 *   Width 16
 *   Poly  0x8005 (x^16 + x^15 + x^2 + 1)
 *   Init  0
 *
 * Copyright (c) 2005 Ben Gardner <[email protected]>
 *
 * This source code is licensed under the GNU General Public License,
 * Version 2. See the file COPYING for more details.
 */

#ifndef __CRC16_H
#define __CRC16_H

#include <linux/types.h>

extern u16 const crc16_table[256];

extern u16 crc16(u16 crc, const u8 *buffer, size_t len);

static inline u16 crc16_byte(u16 crc, const u8 data)
{
	return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
}

#endif /* __CRC16_H */
Commit	Line	Data
9eefe2a2 SR	1	/*
	2	* crc16.h - CRC-16 routine
	3	*
	4	* Implements the standard CRC-16:
	5	* Width 16
	6	* Poly 0x8005 (x^16 + x^15 + x^2 + 1)
	7	* Init 0
	8	*
	9	* Copyright (c) 2005 Ben Gardner <[email protected]>
	10	*
	11	* This source code is licensed under the GNU General Public License,
	12	* Version 2. See the file COPYING for more details.
	13	*/
	14
	15	#ifndef __CRC16_H
	16	#define __CRC16_H
	17
	18	#include <linux/types.h>
	19
	20	extern u16 const crc16_table[256];
	21
	22	extern u16 crc16(u16 crc, const u8 *buffer, size_t len);
	23
	24	static inline u16 crc16_byte(u16 crc, const u8 data)
	25	{
	26	return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
	27	}
	28
	29	#endif /* __CRC16_H */