[issue22486] Speed up fractions.gcd()

[Mark Dickinson]

Mark Dickinson added the comment:

In case it's useful, see issue #1682 for my earlier Lehmer gcd implementation.   At the time, that approach was dropped as being premature optimisation.

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nosy: +mark.dickinson

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22486>
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