From: Tuomo Keskitalo <Tuomo.Keskitalo@iki.fi>
To: Brian Gough <bjg@network-theory.co.uk>
Cc: gsl-discuss@sourceware.org
Subject: Re: GSL ode-initval development
Date: Sun, 31 Aug 2008 07:26:00 -0000 [thread overview]
Message-ID: <48BA4766.6070701@iki.fi> (raw)
In-Reply-To: <m3fxp2ry88.wl%bjg@network-theory.co.uk>
On 08/18/2008 09:09 PM, Brian Gough wrote:
> At Sun, 17 Aug 2008 11:38:15 +0300,
> Tuomo Keskitalo wrote:
>> Implicit solvers result in a group of algebraic non-linear
>> equations, for which there exists several solution strategies.
> If it is only a small number (and they don't need any additional
> parameters) then it's simplest to use the existing framework with
> explicit names for each combination, e.g. gsl_odeiv_step_foo_newt,
> gsl_odeiv_step_foo_imp, etc
I think there will not be too many (hopefully), and your suggestion is OK.
I have been writing a non-linear equation solver based on a modified
Newton iteration method, and a question about failures has come up. What
value should the non-linear equation solver return to the stepper (and
from there to user) in the case that the method reaches a maximum number
of Newton iterations and therefore fails? GSL_CONTINUE or GSL_FAILURE or
something else?
--
Tuomo.Keskitalo@iki.fi
http://iki.fi/tuomo.keskitalo
next prev parent reply other threads:[~2008-08-31 7:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-17 8:39 Tuomo Keskitalo
2008-08-18 18:11 ` Brian Gough
2008-08-31 7:26 ` Tuomo Keskitalo [this message]
2008-09-02 19:08 ` ode-initval stepper logic Tuomo Keskitalo
2008-09-03 10:58 ` GSL ode-initval development Brian Gough
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=48BA4766.6070701@iki.fi \
--to=tuomo.keskitalo@iki.fi \
--cc=bjg@network-theory.co.uk \
--cc=gsl-discuss@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).