libelwix/src/crc.c - diff

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version 1.5.28.1, 2019/12/18 20:00:18	version 1.5.28.2, 2019/12/30 17:56:54
Line 190 crcCalc(u_char * __restrict psBuf, u_int bufLen, u_cha	Line 190 crcCalc(u_char * __restrict psBuf, u_int bufLen, u_cha


/*	/*
* crc16() - Checksum in X/Y modem communication	* crc16_ext() - Checksum ver.2 calculation in X/Y modem communication
*	*
* @buf = Data for calculation	* @buf = Data for calculation
* @bufLen = Length of data	* @bufLen = Length of data
* return: Checksum	* return: Checksum
*/	*/
u_short	u_short
crc16(u_char * __restrict buf, int bufLen)	crc16_ext(u_char * __restrict buf, int bufLen)
{	{
u_short crc, x;	u_short crc, x;
register u_short i;	register u_short i;
Line 221 crc16(u_char * __restrict buf, int bufLen)	Line 221 crc16(u_char * __restrict buf, int bufLen)

if (x)	if (x)
crc ^= crc_16poly;	crc ^= crc_16poly;
	}

	return crc;
	}

	/*
	* crc16() - Checksum calculation in X/Y modem communication
	*
	* @buf = Data for calculation
	* @bufLen = Length of data
	* return: Checksum
	*/
	u_short
	crc16(u_char * __restrict buf, int bufLen)
	{
	u_short crc;
	register u_char i;

	for (crc = 0; bufLen > 0; bufLen--, buf++) {
	crc ^= (u_short) *buf << 8;
	for (i = 0x80; i; i >>= 1)
	if (crc & 0x8000)
	crc = crc << 1 ^ crc_16poly;
	else
	crc <<= 1;
}	}

return crc;	return crc;