crc.h File Reference

Go to the source code of this file.

Functions
void	CRC_Init (unsigned short *crcvalue)
void	CRC_ProcessByte (unsigned short *crcvalue, byte data)
unsigned short	CRC_Value (unsigned short crcvalue)
unsigned short	CRC_Block (byte *start, int count)

Function Documentation

CRC_Block()

unsigned short CRC_Block	(	byte *	start,
		int	count
	)

Definition at line 82 of file crc.c.

{
    unsigned short  crc;
 
    CRC_Init (&crc);
    while (count--)
        crc = (crc << 8) ^ crctable[(crc >> 8) ^ *start++];
 
    return crc;
}

CRC_Init()

void CRC_Init

(

unsigned short *

crcvalue

)

Definition at line 67 of file crc.c.

{
    *crcvalue = CRC_INIT_VALUE;
}

CRC_ProcessByte()

void CRC_ProcessByte	(	unsigned short *	crcvalue,
		byte	data
	)

Definition at line 72 of file crc.c.

{
    *crcvalue = (*crcvalue << 8) ^ crctable[(*crcvalue >> 8) ^ data];
}

CRC_Value()

unsigned short CRC_Value

(

unsigned short

crcvalue

)

Definition at line 77 of file crc.c.

{
    return crcvalue ^ CRC_XOR_VALUE;
}