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Message-ID: <20171130230843.GU15263@port70.net>
Date: Fri, 1 Dec 2017 00:08:43 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: expectations for a_ctz_64(0)
* Andre McCurdy <armccurdy@...il.com> [2017-11-30 14:41:32 -0800]:
> Currently the generic and aarch64 versions of a_ctz_64() give
> different results for 0:
>
> a_ctz_64_generic(0) : 0
> a_ctz_64_aarch64(0) : 64
>
> That doesn't matter for the ffs functions, but for the other users of
> a_ctz_l and a_ctz_64 (ie malloc and qsort) it's less clear.
>
> Does musl rely on a specific behaviour?
no, that would be a bug.
same for clz
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