class Digest::CRC16XModem

Implements the CRC16 XMmodem algorithm.

Constants

TABLE

Generated by `./pycrc.py –algorithm=table-driven –model=xmodem –generate=c`

Public Instance Methods

update(data) click to toggle source

Updates the CRC16 XModem checksum.

@param [String] data

The data to update the checksum with.
# File lib/digest/crc16_xmodem.rb, line 51
def update(data)
  data.each_byte do |b|
    @crc = ((@table[((@crc >> 8) ^ b) & 0xff] ^ (@crc << 8)) & 0xffff)
  end

  return self
end