linux-kernel - Re: [PATCH 1/2] math128: Introduce {mult,add,cmp}

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Message-ID: <1335366172.28150.268.camel@twins>
Date:	Wed, 25 Apr 2012 17:02:52 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Jay Foad <jay.foad@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] math128: Introduce {mult,add,cmp}_u128

On Wed, 2012-04-25 at 15:29 +0100, Jay Foad wrote:
> > +             res.hi |= x.lo >> (64 - n);
> 
> This is undefined when n == 0.
> 
> 
Thanks, added a !n test.
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