[Bug 165970] [libc] [patch] strtonum() optimization

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=165970

--- Comment #9 from Pedro F. Giffuni <pfg at FreeBSD.org> ---
(In reply to Pedro F. Giffuni from comment #7)
> Created attachment 146180 [details]
> Update for newer libc
> 
> I brought a small cosmetic change from OpenBSD so the patch needed an update.
> (I haven't tested it yet).

For reference: I took the OpenBSD regression test (strtonumtest.c) and looped
the tests 100000 times. With the patch we still pass the tests and I was able
to measure a steady 7% performance improvement.

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