[issue43053] Speed up math.isqrt, again

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

Thanks; I'll take a look at this at the weekend. Do you have a sketch of a proof of correctness available?

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assignee:  -> mark.dickinson

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43053>
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