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1 /*
2  *	crc16.h - CRC-16 routine
3  *
4  * Implements the standard CRC-16:
5  *   Width 16
6  *   Poly  0x8005 (x16 + x15 + x2 + 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 
18 /* for an unknown reason, PPC treats __u16 as signed and keeps doing sign
19  * extension on the value.  Instead, use only the low 16 bits of an
20  * unsigned int for holding the CRC value to avoid this.
21  */
22 typedef unsigned int crc16_t;
23 
24 extern crc16_t ext2fs_crc16(crc16_t crc, const void *buffer, unsigned int len);
25 
26 #endif /* __CRC16_H */
27