[issue8692] Use divide-and-conquer for faster factorials

[Daniel Stutzbach]

Daniel Stutzbach <daniel at stutzbachenterprises.com> added the comment:

Attached is a simple bash script to run math.factorial(n) through timeit for several values of n.  It makes comparing the speed of different builds MUCH easier.

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Added file: http://bugs.python.org/file17329/factorial-speed.sh

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<http://bugs.python.org/issue8692>
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