The math/rand package has 38848 bits of state. The seed value is only 64
bits, yes, but that's a separate question. Is seeding what you are
concerned with?

-rob


On Thu, Aug 16, 2018 at 1:19 PM, Pat Farrell <pat22...@gmail.com> wrote:

> I want to build a poker simulator. For this, I need a nice method to
> shuffle cards. A bit of googling shows that a good basic approach is  the
> Fisher-Yates shuffle. Its O(n) and space efficient. But it depends on the
> quality of the PRNG. I am specifically concerned that the math/rand is only
> 64 bits of state. Since  52! <https://en.wikipedia.org/wiki/Factorial> ≈
> 2^225.6
> we really need at least 225 bits of state within the PRNG.
>
> I can't be the first one to look for an algorithm to shuffle a single 52
> card deck.
>
> What tools and/or approaches are suitable?
>
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