[issue41310] micro-optimization: increase our float parsing speed by Nx

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

FTR, no formal description of the algorithm seems to have been published, but the source code is amply commented:
https://github.com/lemire/fast_double_parser/blob/master/include/fast_double_parser.h

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nosy: +pitrou

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41310>
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