linux-kernel - Re: [RFC][PATCH] fix abs() macro to work with types wider than int

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Message-ID: <alpine.DEB.0.98.0704251123370.19149@sigma.j-a-k-j.com>
Date:	Wed, 25 Apr 2007 11:26:49 -0400 (EDT)
From:	"John Anthony Kazos Jr." <jakj@...-k-j.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
cc:	Richard Knutsson <ricknu-0@...dent.ltu.se>,
	Jiri Bohac <jbohac@...e.cz>, akpm@...l.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] fix abs() macro to work with types wider than int

> > > I think it's like it is just to be consistent with abs() in C,
> > > which also contains labs() and llabs().
> > >   
> > We actually had labs() before (few months ago), but since it was not 
> > used, and if it would it seemed better to just fix abs(), it was 
> > removed. So I think this is the appropriate way to go.
> 
> Sounds like when someone actually needs labs() or llabs()
> they can submit a patch for however they would like to use it.

However they would like to use *abs()? What different ways are possible to 
take the arithmetic absolute value? I see record of many cases where 
dozens of authors have macros that then get collapsed to include files. So 
why not avoid that annoyance this time and -start- with it in the include 
files?

Can there even be any reason beyond unnecessary pedantics to have 
[l[l]]abs?
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