Return-Path: <tiff-bounces@lists.maptools.org>
X-Original-To: info@awaresystems.be
Delivered-To: info@awaresystems.be
Received: from mx-j.b-one.net (mx-j.one.com [91.198.169.57])
	by mail9.b-one.net (Postfix) with ESMTP id C7FFC400124
	for <info@awaresystems.be>; Wed,  7 Oct 2009 22:01:44 +0200 (CEST)
X-Virus-Scanned: by one.com
X-Spam-Score: 0
X-Spam-Level: 
X-Spam-Status: No, score=0 tagged_above=0 required=6 tests=[none]
X-Greylist: domain auto-whitelisted by SQLgrey-1.7.4
Received: from lists.maptools.org (lists.maptools.org [65.39.174.144])
	by mx-j.b-one.net (Postfix) with ESMTP id E2F104AFC7A
	for <info@awaresystems.be>; Wed,  7 Oct 2009 22:01:43 +0200 (CEST)
Received: from localhost.localdomain (localhost.localdomain [127.0.0.1])
	by lists.maptools.org (Postfix) with ESMTP id AE8961D1F43DE;
	Wed,  7 Oct 2009 15:01:10 -0500 (EST)
Received: from blade.simplesystems.org (blade.simplesystems.org [65.66.246.74])
	by lists.maptools.org (Postfix) with ESMTPS id 5D40F1D20250F
	for <tiff@lists.maptools.org>; Wed,  7 Oct 2009 14:59:46 -0500 (EST)
Received: from freddy.simplesystems.org (freddy.simplesystems.org
	[65.66.246.65])
	by blade.simplesystems.org (8.13.8+Sun/8.13.8) with ESMTP id
	n97JxjOb022527; Wed, 7 Oct 2009 14:59:45 -0500 (CDT)
Date: Wed, 7 Oct 2009 14:59:45 -0500 (CDT)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
X-X-Sender: bfriesen@freddy.simplesystems.org
To: Eskandar Ensafi <Ensafi@SpaceComputer.Com>
In-Reply-To: <007c01ca4783$dfa4fc60$9eeef520$@com>
Message-ID: <alpine.GSO.2.01.0910071454200.15399@freddy.simplesystems.org>
References: <007c01ca4783$dfa4fc60$9eeef520$@com>
User-Agent: Alpine 2.01 (GSO 1266 2009-07-14)
MIME-Version: 1.0
Content-Type: MULTIPART/MIXED;
	BOUNDARY="-559023410-1508954879-1254945585=:15399"
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.2
	(blade.simplesystems.org [65.66.246.90]);
	Wed, 07 Oct 2009 14:59:45 -0500 (CDT)
Cc: tiff@lists.maptools.org
Subject: Re: [Tiff] Wrong Native Bit Order on Intel x86_64
X-BeenThere: tiff@lists.maptools.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: TIFF and libtiff discussion <tiff.lists.maptools.org>
List-Unsubscribe: <http://lists.maptools.org/mailman/listinfo/tiff>,
	<mailto:tiff-request@lists.maptools.org?subject=unsubscribe>
List-Archive: <http://lists.maptools.org/mailman/private/tiff>
List-Post: <mailto:tiff@lists.maptools.org>
List-Help: <mailto:tiff-request@lists.maptools.org?subject=help>
List-Subscribe: <http://lists.maptools.org/mailman/listinfo/tiff>,
	<mailto:tiff-request@lists.maptools.org?subject=subscribe>
Sender: tiff-bounces@lists.maptools.org
Errors-To: tiff-bounces@lists.maptools.org

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

---559023410-1508954879-1254945585=:15399
Content-Type: TEXT/PLAIN; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: 8BIT

On Wed, 7 Oct 2009, Eskandar Ensafi wrote:
> 
> I noticed that when I tried to compile tiff-4.0.0-beta4, the native bit order on 64-bit x86_64 systems was
> determined to be FILLORDER_MSB2LSB (not correct as far as I know) whereas on 32-bit x86 systems, it is
> correctly determined to be FILLORDER_LSB2MSB.  I checked my current tiff-3.8.2 installation (the standard
> package provided in Red Hat Enterprise Linux 5.4), and the same discrepancy existed in tiff-3.8.

This is very interesting.  It seems like there should be some 
efficient way to determine this at run-time rather than via the 
configure script.  I am not sure how to test for native fill order 
though.

Bob
--
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
---559023410-1508954879-1254945585=:15399
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Tiff mailing list: Tiff@lists.maptools.org
http://lists.maptools.org/mailman/listinfo/tiff
http://www.remotesensing.org/libtiff/
---559023410-1508954879-1254945585=:15399--
