From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1652 invoked by alias); 2 Sep 2008 19:08:26 -0000 Received: (qmail 1640 invoked by uid 22791); 2 Sep 2008 19:08:25 -0000 X-Spam-Check-By: sourceware.org Received: from smtp6.pp.htv.fi (HELO smtp6.pp.htv.fi) (213.243.153.40) by sourceware.org (qpsmtpd/0.31) with ESMTP; Tue, 02 Sep 2008 19:07:32 +0000 Received: from [10.0.0.133] (cs27054090.pp.htv.fi [89.27.54.90]) by smtp6.pp.htv.fi (Postfix) with ESMTP id 3989D5BC064 for ; Tue, 2 Sep 2008 22:07:29 +0300 (EEST) Message-ID: <48BD8EF0.5030502@iki.fi> Date: Tue, 02 Sep 2008 19:08:00 -0000 From: Tuomo Keskitalo User-Agent: Icedove 1.5.0.14eol (X11/20080724) MIME-Version: 1.0 To: gsl-discuss@sourceware.org Subject: ode-initval stepper logic Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Mailing-List: contact gsl-discuss-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gsl-discuss-owner@sourceware.org X-SW-Source: 2008-q3/txt/msg00023.txt.bz2 Hello, which values of variables y should a stepper which uses step doubling for error estimation return: The values from the single step or the values from two half steps? You would expect to get the values of single step from "a stepper", but the values from two half steps should be more accurate, and they are available. -- Tuomo.Keskitalo@iki.fi http://iki.fi/tuomo.keskitalo