36 lines
741 B
C
36 lines
741 B
C
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/*
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* crc16.h - CRC-16 routine
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*
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* Implements the standard CRC-16:
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* Width 16
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* Poly 0x8005 (x^16 + x^15 + x^2 + 1)
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* Init 0
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*
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* Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
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*
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* This source code is licensed under the GNU General Public License,
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* Version 2. See the file COPYING for more details.
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*/
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#ifndef __CRC16_H
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#define __CRC16_H
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extern unsigned short const crc16_table[256];
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#ifdef __cplusplus
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extern "C" {
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#endif
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unsigned short _crc16(unsigned short crc, const unsigned char *buffer, unsigned int len);
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#ifdef __cplusplus
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}
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#endif
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static inline unsigned short crc16_byte(unsigned short crc, const unsigned char data)
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{
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return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
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}
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#endif /* __CRC16_H */
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