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require 'digest/crc'
module Digest
#
# Implements the CRC5 algorithm.
#
class CRC5 < CRC
WIDTH = 5
REFLECT_INPUT = true
INIT_CRC = 0x1f
XOR_MASK = 0x1f
CRC_MASK = 0x1f
# Generated by `./pycrc.py --algorithm=table-driven --model=crc-5 --generate=c`
TABLE = [
0x00, 0x0e, 0x1c, 0x12, 0x11, 0x1f, 0x0d, 0x03, 0x0b, 0x05, 0x17, 0x19, 0x1a, 0x14, 0x06, 0x08,
0x16, 0x18, 0x0a, 0x04, 0x07, 0x09, 0x1b, 0x15, 0x1d, 0x13, 0x01, 0x0f, 0x0c, 0x02, 0x10, 0x1e,
0x05, 0x0b, 0x19, 0x17, 0x14, 0x1a, 0x08, 0x06, 0x0e, 0x00, 0x12, 0x1c, 0x1f, 0x11, 0x03, 0x0d,
0x13, 0x1d, 0x0f, 0x01, 0x02, 0x0c, 0x1e, 0x10, 0x18, 0x16, 0x04, 0x0a, 0x09, 0x07, 0x15, 0x1b,
0x0a, 0x04, 0x16, 0x18, 0x1b, 0x15, 0x07, 0x09, 0x01, 0x0f, 0x1d, 0x13, 0x10, 0x1e, 0x0c, 0x02,
0x1c, 0x12, 0x00, 0x0e, 0x0d, 0x03, 0x11, 0x1f, 0x17, 0x19, 0x0b, 0x05, 0x06, 0x08, 0x1a, 0x14,
0x0f, 0x01, 0x13, 0x1d, 0x1e, 0x10, 0x02, 0x0c, 0x04, 0x0a, 0x18, 0x16, 0x15, 0x1b, 0x09, 0x07,
0x19, 0x17, 0x05, 0x0b, 0x08, 0x06, 0x14, 0x1a, 0x12, 0x1c, 0x0e, 0x00, 0x03, 0x0d, 0x1f, 0x11,
0x14, 0x1a, 0x08, 0x06, 0x05, 0x0b, 0x19, 0x17, 0x1f, 0x11, 0x03, 0x0d, 0x0e, 0x00, 0x12, 0x1c,
0x02, 0x0c, 0x1e, 0x10, 0x13, 0x1d, 0x0f, 0x01, 0x09, 0x07, 0x15, 0x1b, 0x18, 0x16, 0x04, 0x0a,
0x11, 0x1f, 0x0d, 0x03, 0x00, 0x0e, 0x1c, 0x12, 0x1a, 0x14, 0x06, 0x08, 0x0b, 0x05, 0x17, 0x19,
0x07, 0x09, 0x1b, 0x15, 0x16, 0x18, 0x0a, 0x04, 0x0c, 0x02, 0x10, 0x1e, 0x1d, 0x13, 0x01, 0x0f,
0x1e, 0x10, 0x02, 0x0c, 0x0f, 0x01, 0x13, 0x1d, 0x15, 0x1b, 0x09, 0x07, 0x04, 0x0a, 0x18, 0x16,
0x08, 0x06, 0x14, 0x1a, 0x19, 0x17, 0x05, 0x0b, 0x03, 0x0d, 0x1f, 0x11, 0x12, 0x1c, 0x0e, 0x00,
0x1b, 0x15, 0x07, 0x09, 0x0a, 0x04, 0x16, 0x18, 0x10, 0x1e, 0x0c, 0x02, 0x01, 0x0f, 0x1d, 0x13,
0x0d, 0x03, 0x11, 0x1f, 0x1c, 0x12, 0x00, 0x0e, 0x06, 0x08, 0x1a, 0x14, 0x17, 0x19, 0x0b, 0x05
].freeze
#
# Initializes the CRC5 instance.
#
def initialize
@crc_mask = self.class.const_get(:CRC_MASK)
super
end
end
end
if RUBY_ENGINE == 'ruby'
begin; require 'digest/crc5/crc5_ext'; rescue LoadError; end
end
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