[issue21955] ceval.c: implement fast path for integers with a single digit

[STINNER Victor]

STINNER Victor added the comment:

Case Van Horsen added the comment:
> I ran the mpmath test suite with the fastint6 and fastint5_4 patches.
>
> fastint6 results
> without gmpy: 0.25% faster
> with gmpy: 3% slower
>
> fastint5_4 results
> without gmpy: 1.5% slower
> with gmpy: 5.5% slower

I'm more and more disappointed by this issue... If even a test
stressing int & float is *slower* (or less than 1% faster) with a
patch supposed to optimized them, what's the point? I'm also concerned
by the slow-down for other types (gmpy types).

Maybe we should just close the issue?

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21955>
_______________________________________