On Wed, 11 Apr 2007, Tom Lane wrote:
> It's not really possible to use it "incorrectly", AFAICS. Any value you
> might pass to it will result in a specific new seed value. Nowhere is
> there any guarantee of what the mapping is, and it's obviously
> impossible to guarantee that the mapping is one-to-one, so any user
> assumptions about what a specific seed value might "mean" seem broken
> regardless.
>
Then please consider this patch which checks the range and maps the
provided value to the entire seed space.
Kris Jurka