Merge branch 'master' of https://github.com/ben-ihelputech/fio
[fio.git] / crc / crc16.h
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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 <bgardner@wabtec.com>
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
18extern unsigned short const crc16_table[256];
19
25dfa848 20extern unsigned short fio_crc16(const void *buffer, unsigned int len);
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21
22static inline unsigned short crc16_byte(unsigned short crc,
23 const unsigned char data)
24{
25 return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
26}
27
28#endif /* __CRC16_H */