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Re: [Bug-gsl] [bug #30540] please, add convergence checks in rk4imp/rk2i

From: Sergey B Kirpichev
Subject: Re: [Bug-gsl] [bug #30540] please, add convergence checks in rk4imp/rk2imp
Date: Fri, 3 Sep 2010 13:22:10 +0400

On 9/3/10, Tuomo Keskitalo <address@hidden> wrote:
> > Right.  Fixed version (with jacobian, attached below) seems to be working.
> >
> > Actually, it works only for eps_abs ~ round off error.  Already for
> > eps_abs = 1e-10 it's easy to see small (linear?) drift in hamiltonian
> > from the constant.
>  Sorry, I'm not familiar with your problem. Can you please elaborate?


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