The fastest routine at https://github.com/andrewcooke/CRC.jl/blob/master/test/speed.jl is 2.6x slower than C code.
I've tried to isolate things so it's easy to hack and experiment with. If anyone can beat my best code (which - credit to Julia - is also the simplest; anything I try to make it faster just makes it slower) I'd love to know... Cheers, Andrew
