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From: Herbert Rosmanith <herp@wildsau.idv-edu.uni-linz.ac.at>
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Subject: Re: [IDEA+RFC] Possible solution for min()/max() war
To: linux-kernel@vger.kernel.org
Date: Thu, 30 Aug 2001 22:44:07 +0200 (MET DST)
Cc: ptb@it.uc3m.es
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>   if sizeof(typeof(a)) != sizeof(typeof(b))
>       BUG() // sizes differ

this is not neccessarily a problem. should work with char/short char/int
short/int comparison.

only problem seems to be signed/unsigned int comparison.

>   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)

if sizeof(typeof(a))==sizeof(int) && sizeof(typeof(b))==sizeof(int) &&
   ( _a < 0 && _b > 0 || _a > 0 && b < 0 )
	BUG() // signed unsigned int compare