Support CRC32C (Castagnoli) about crc HOT 7 CLOSED

The constant 0x1EDC6F41 is what I find when I search for CRC32C. That seems right.

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@fire I'm assuming that is the CRC32_C available here: http://www.sunshine2k.de/coding/javascript/crc/crc_js.html

That is one of the online apps I use for verification when adding new algorithms.

With the addition of CRC32 in #11 I should be able to add the correct polynomials etc. I'll look into it after that is merged.

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pycrc also has crc-32c builtin and the table it generates matches the table shown on the javascript CRC calculator.

You can generate the C source and header with:

./pycrc.py --generate=c --algorithm=tbl --model=crc-32c
./pycrc.py --generate=h --algorithm=tbl --model=crc-32c

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Any progress on this?

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:crc_32c is supported under TattdCodeMonkey/crc@single as mentioned in #13

iex> CRC.crc(:crc_32c, "123456789")
3808858755

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What he said, it will be in the next minor release. Currently working through incorporating the TattdCodeMonkey/crc@single branch into a release. But that is behind #15 right now in priority.

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@fire

iex> CRC.crc(:crc_32c, "123456789")
3808858755

Is now available in v0.8.0 give it a try and let me know if you have any issues

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