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Date: Thu, 30 Aug 2001 21:51:52 +0200
From: David Weinehall <tao@acc.umu.se>
To: "Peter T. Breuer" <ptb@it.uc3m.es>
Cc: linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: [IDEA+RFC] Possible solution for min()/max() war
Message-ID: <20010830215151.A14715@khan.acc.umu.se>
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In-Reply-To: <200108301638.SAA04923@nbd.it.uc3m.es>; from ptb@it.uc3m.es on Thu, Aug 30, 2001 at 06:38:40PM +0200
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On Thu, Aug 30, 2001 at 06:38:40PM +0200, Peter T. Breuer wrote:
> "Linus Torvalds wrote:"
> > What if the "int" happens to be negative?
> 
>    if sizeof(typeof(a)) != sizeof(typeof(b)) 
>        BUG() // sizes differ
>    const (typeof(a)) _a = ~(typeof(a))0   
>    const (typeof(b)) _b = ~(typeof(b))0   
>    if _a < 0 && _b > 0 || _a > 0 && b < 0
>        BUG() // one signed, the other unsigned
>    standard_max(a,b)

<disgusting vomit-sound>Do you really want code like that in the
kernel (yes, I know that there are code that can compete with it in
ugliness</disgusting vomit-sound>


/David Weinehall
  _                                                                 _
 // David Weinehall <tao@acc.umu.se> /> Northern lights wander      \\
//  Project MCA Linux hacker        //  Dance across the winter sky //
\>  http://www.acc.umu.se/~tao/    </   Full colour fire           </