Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id <S129050AbQJ3NHi>; Mon, 30 Oct 2000 08:07:38 -0500
Received: (majordomo@vger.kernel.org) by vger.kernel.org
	id <S129079AbQJ3NH2>; Mon, 30 Oct 2000 08:07:28 -0500
Received: from [195.63.194.11] ([195.63.194.11]:31753 "EHLO
	mail.stock-world.de") by vger.kernel.org with ESMTP
	id <S129050AbQJ3NHR>; Mon, 30 Oct 2000 08:07:17 -0500
Message-ID: <39FD7F2C.9A3F3976@evision-ventures.com>
Date: Mon, 30 Oct 2000 15:01:16 +0100
From: Martin Dalecki <dalecki@evision-ventures.com>
X-Mailer: Mozilla 4.73 [en] (X11; U; Linux 2.2.16-1 i686)
X-Accept-Language: en
MIME-Version: 1.0
To: Horst von Brand <vonbrand@sleipnir.valparaiso.cl>
CC: linux-kernel@vger.kernel.org
Subject: Re: 2.4.0-test10-pre6: Use of abs()
In-Reply-To: <200010281629.e9SGTah07672@sleipnir.valparaiso.cl>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
X-Mailing-List: linux-kernel@vger.kernel.org

Horst von Brand wrote:
> 
> Red Hat 7.0, i686, gcc-20001027 (Yes, I know. Just to flush out bugs on
> both sides).
> 
> abs() is used at least in:
> 
> arch/i386/kernel/time.c
> drivers/md/raid1.c
> drivers/sound/sb_ess.c
> 
> gcc warns about use of a non-declared function each time.
> 
> No definition for the function is to be found (grep over all include/ comes
> up clean, except for extern definitions in asm-{mips,ppc}; ditto for lib/).
> Presumably gcc is using a builtin (it doesn't show up in System.map). Is
> this the desired state of affairs? Should a include/linux/stdlib.h be

Yes abs will be transformed into an internal function, which will be
fully
unrolled due to -O2.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/