How to use burtleburtle's LOOKUP function for hash table lookup?

The comments describe how to use it. Update: I’m leaving the old hash in the text below, but it’s obsolete, I have faster and more thorough hashes now. http://burtleburtle.net/bob/c/lookup3.c (2006) is about 2 cycles/byte, works well on 32-bit platforms, and can produce a 32 or 64 bit hash.
For More Information Please Refer:
https://burtleburtle.net/bob/hash/doobs.html
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