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  3. February 2008

Re: Random number access on the i5

Mark Villa wrote:

Is there such a thing as a "certified random number"? I would like to
get this behind me and I have not found a methodology I can sign off
on yet. Ideally, any correct algorithm could be multiple platform. I
am under the impression that it should be CPU dependant and a CPU must
support it directly with an instruction.

I am partial to Park & Miller rather than the C library routines, see http://www.firstpr.com.au/dsp/rand31/ A decent explanation of pseudorandom numbers is in the Wikipedia http://en.wikipedia.org/wiki/Pseudo-random_number_generator Knuth in volume 2 of The Art of Computer Programming has a long and useful section on randomness.

What do you need the random number to do?
--buck

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