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Good news for PPC Random-Number Generator
05-19-2021, 06:31 PM
Post: #20
RE: Good news for PPC Random-Number Generator
(05-19-2021 05:41 PM)rprosperi Wrote:  On these extended test runs to verify generated numbers are not repeated, where are all the generated numbers stored, while verifying subsequent numbers don't match, or are you trusting some algorithm's verification

For this particular algorithm and others like it, if the initial seed ever gets repeated then the whole sequence repeats again so a simple verification requires just to compare each generated number to the initial seed while keeping count of how many numbers are generated. Here, any seed you care to use gets repeated after exactly one millon generated numbers. No need to store anything but the initial seed.

To make sure there are no seeds which result in shorter periods, there are more ellaborated yet still simple algorithms that also don't need storing the whole sequence, see this link, "cycle detection".

Best regards.

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RE: Good news for PPC Random-Number Generator - Valentin Albillo - 05-19-2021 06:31 PM

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