crc12

baseband.mark4.header.crc12 = <baseband.vlbi_base.utils.CRC object>

Cyclic Redundancy Check for a bitstream.

See https://en.wikipedia.org/wiki/Cyclic_redundancy_check

Once initialised, the instance can be used as a function that calculates the CRC, or one can use the check method to check that the CRC at the end of a stream is correct.

Parameters:

polynomial : int

Binary encoded CRC divisor. For instance, that used by Mark 4 headers is 0x180f, or x^12 + x^11 + x^3 + x^2 + x + 1.