linux-kernel - Re: [PATCH 2.6.20] isdn-capi: Use ARRAY

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Message-ID: <20070207194059.GY8991@Ahmed>
Date:	Wed, 7 Feb 2007 21:41:00 +0200
From:	"Ahmed S. Darwish" <darwish.07@...il.com>
To:	Philippe De Muyter <phdm@...qel.be>
Cc:	Joe Perches <joe@...ches.com>, kkeil@...e.de,
	kai.germaschewski@....de, linux-kernel@...r.kernel.org,
	isdn4linux@...tserv.isdn4linux.de
Subject: Re: [PATCH 2.6.20] isdn-capi: Use ARRAY_SIZE macro when appropriate

On Tue, Feb 06, 2007 at 10:18:14PM +0100, Philippe De Muyter wrote:
> On Tue, Feb 06, 2007 at 10:41:30PM +0200, Ahmed S. Darwish wrote:
> >  
> > -    for (i=nelem-1; i >= 0; i--) {
> > +    for (i = ARRAY_SIZE(procfsentries) - 1; i >= 0; i--) {
> 
> I would write such decrementing loops as :
> 
>        for (i = ARRAY_SIZE(procfsentries); --i >= 0; ) {
> 
> Long time ago, that produced better code.  I did not check recently though.
[...]
> > -    for (i=nelem-1; i >= 0; i--) {
> > +    for (i = ARRAY_SIZE(procfsentries) - 1; i >= 0; i--) {
> 
> Same here

Hi Philippe,

Won't this hurt readability ?. I'm not a gcc guru anyway to have an
opinion on such stuff :).

-- 
Ahmed S. Darwish
http://darwish-07.blogspot.com
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