[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Matlab to Octave - precision and differential equations
From: |
Sergei Steshenko |
Subject: |
Re: Matlab to Octave - precision and differential equations |
Date: |
Mon, 4 Oct 2010 05:05:38 -0700 (PDT) |
--- On Fri, 10/1/10, Doug Stewart <address@hidden> wrote:
> From: Doug Stewart <address@hidden>
> Subject: Re: Matlab to Octave - precision and differential equations
> To: "fork" <address@hidden>
> Cc: address@hidden
> Date: Friday, October 1, 2010, 11:57 AM
> On Fri, Oct 1, 2010 at 2:06 PM, fork
> <address@hidden>
> wrote:
> > Doug Stewart <doug.dastew <at> gmail.com>
> writes:
> >
> >>
> >>
> >> What do you mean by "double precision limitation
> of Matlab" ???
> >
> > I assume the OP meant how many bits are stored in a
> double (53 according to the
> > wiki article:
> > http://en.wikipedia.org/wiki/Floating_point#Internal_representation)
> >
> > Perhaps the question should be "does octave have a
> quad datatype?"
> >
> > Additionally, I would wonder if the OP's data is ill
> conditioned.
> >
> > _______________________________________________
> > Help-octave mailing list
> > address@hidden
> > https://www-old.cae.wisc.edu/mailman/listinfo/help-octave
> >
>
> >From : Rampal Etienne
> Dear Doug,
>
> I mean that Matlab is only precise up to 16 digits. I need
> higher precision
> for my purposes.
>
> Kind regards,
>
> Rampal Etienne
>
> _______________________________________________
> Help-octave mailing list
> address@hidden
> https://www-old.cae.wisc.edu/mailman/listinfo/help-octave
>
You rather probably need a different numerical method.
Regards,
Sergei.
Re: Matlab to Octave - precision and differential equations, Ben Barrowes, 2010/10/05