class Digest::CRC16CCITT
Implements the CRC16 CCITT algorithm.
Constants
- INIT_CRC
- TABLE
Generated by `./pycrc.py –algorithm=table-driven –model=ccitt –generate=c`
Public Instance Methods
update(data)
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Updates the CRC16 CCITT checksum.
@param [String] data
The data to update the checksum with.
# File lib/digest/crc16_ccitt.rb, line 53 def update(data) data.each_byte do |b| @crc = ((@table[((@crc >> 8) ^ b) & 0xff] ^ (@crc << 8)) & 0xffff) end return self end