From owner-freebsd-numerics@freebsd.org  Sat Dec 16 16:54:07 2017
Return-Path: <owner-freebsd-numerics@freebsd.org>
Delivered-To: freebsd-numerics@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id D6DA3E87E49
 for <freebsd-numerics@mailman.ysv.freebsd.org>;
 Sat, 16 Dec 2017 16:54:07 +0000 (UTC)
 (envelope-from sgk@troutmask.apl.washington.edu)
Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu
 [128.95.76.21])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "troutmask", Issuer "troutmask" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id BB3EB6A83F
 for <freebsd-numerics@freebsd.org>; Sat, 16 Dec 2017 16:54:07 +0000 (UTC)
 (envelope-from sgk@troutmask.apl.washington.edu)
Received: from troutmask.apl.washington.edu (localhost [127.0.0.1])
 by troutmask.apl.washington.edu (8.15.2/8.15.2) with ESMTPS id vBGGs6BW019378
 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO);
 Sat, 16 Dec 2017 08:54:06 -0800 (PST)
 (envelope-from sgk@troutmask.apl.washington.edu)
Received: (from sgk@localhost)
 by troutmask.apl.washington.edu (8.15.2/8.15.2/Submit) id vBGGs6RH019377;
 Sat, 16 Dec 2017 08:54:06 -0800 (PST) (envelope-from sgk)
Date: Sat, 16 Dec 2017 08:54:06 -0800
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: Bruce Evans <brde@optusnet.com.au>
Cc: freebsd-numerics@freebsd.org
Subject: Re: progress on powl.
Message-ID: <20171216165406.GA18979@troutmask.apl.washington.edu>
Reply-To: sgk@troutmask.apl.washington.edu
References: <20171216013325.GA27344@troutmask.apl.washington.edu>
 <20171216135205.D971@besplex.bde.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20171216135205.D971@besplex.bde.org>
User-Agent: Mutt/1.7.2 (2016-11-26)
X-BeenThere: freebsd-numerics@freebsd.org
X-Mailman-Version: 2.1.25
Precedence: list
List-Id: "Discussions of high quality implementation of libm functions."
 <freebsd-numerics.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-numerics>, 
 <mailto:freebsd-numerics-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-numerics/>
List-Post: <mailto:freebsd-numerics@freebsd.org>
List-Help: <mailto:freebsd-numerics-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-numerics>, 
 <mailto:freebsd-numerics-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 16 Dec 2017 16:54:07 -0000

On Sat, Dec 16, 2017 at 03:08:52PM +1100, Bruce Evans wrote:
> On Fri, 15 Dec 2017, Steve Kargl wrote:
> 
> > As expect no one elase is working on powl, I have
> > dusted off my work-in-progress that is now some
> > 1+ year in the works. I've now got a sort of
> > working version in very limited testing.
> > ...
> > I'm still slowing working out some thresholds and
> > few other kinks.  The biggest problem is that
> > src/e_pow.c may be the worse commented code that
> > I've had the pleasure to read.  There are 3 polynomial
> > approximations.  One is easy to work.  The other two
> > are gaint mysteries at moment.
> 

I spoke too soon.  It seems that some of my bit twiddling
has gone off the rails. :(

-- 
Steve