[issue23553] Reduce the number of comparison for range checking.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

My point is that if the benefit is too small (say < 5% in microbenchmarks), it 
is not worth code churning. Actually my bar for microbenchmarks is higher, 
about 20%.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23553>
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