Super Fast CRC Algorithm

September 4, 2015

Take a look at the details here: https://software.intel.com/en-us/blogs/2015/09/02/whats-wrong-with-my-crc

Specifically these two lines of code:

Fast CRC 16 C

myCrc ^= *buffer++;
myCrc = (myCrc) ^ (myCrc << 5) ^ (myCrc << 8);

Fast CRC 16 C#

myCrc ^= (ushort)(buffer[pos]);
myCrc = (ushort)((myCrc) ^ (myCrc << 5) ^ (myCrc << 8));

It looks like a very efficient CRC method, for both CPU and Memory utilization.
I can’t find anything wrong with it, so why isn’t this kind of implementation the first hit on google?

What am I missing there?

Any idea is welcome.

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