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 (at) 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 extern unsigned short const crc16_table[256]; 19 20 extern unsigned short fio_crc16(const void *buffer, unsigned int len); 21 22 static 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 */ 29
