value range propagation for _bitwise_ OR

["Jérôme M. Berger"]

Jérôme M. Berger wrote:
> 	OK, I found a solution that is optimal in over 99% of the cases
> (99.195% to be precise), while still being fast (because it avoids
> looping over the bits):
> 
	I've run my function and Andrei's on all possible min, max pairs in
0..299 without checking, just for the timing. On my computer (Athlon
X2 64 @2GHz), my function took 50s and Andrei's took 266s. The
difference should be even bigger for larger numbers.

		Jerome
-- 
mailto:jeberger at free.fr
http://jeberger.free.fr
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