Anyone who aspires to bit-twiddling must check out:

http://www.hackersdelight.org/index.htm
http://www.hackersdelight.org/HDcode.htm

I just bought Dr. Henry Warren's (hmm, perhaps related to Andy?) book,
"Hacker's Delight". It's an outstanding collection of algorithms ranging
from obfuscated bit twiddling to classical multiplication.

Scott

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