Re: multiple precision version of BLAS and LAPACK

[David Bateman]

The fixed package was aimed at doing fixed point calculations for 
DSP/ASIC bit accurate analysis and do it fast. Typically 16 bit numbers 
or less are all that are used in that case.. GMP is for much larger 
numbers than that.. I'd suggest looking at the VPA type in the symbolic 
package instead.

David


Maho NAKATA wrote:
> Hello Jaroslav Hajek,
>
> Many thanks for your kind reply. I'll look at it and maybe the
> start from here looks very nice.
>
> Best,
>
> From: Jaroslav Hajek <address@hidden>
> Subject: Re: multiple precision version of BLAS and LAPACK
> Date: Fri, 18 Sep 2009 07:52:26 +0200
>
>   
> > On Thu, Sep 17, 2009 at 7:10 AM, Maho NAKATA <address@hidden> wrote:
> >     
> > > Hi developers of octave,
> > > my name is Nakata Maho, Japanese, who is interested in Octave.
> > > Thanks for good software!
> > >
> > > Just my interest, I have been developing multiple precision version
> > > of BLAS and LAPACK, using qd/dd/gmp [1]. I have a principal developer of
> > > SDPA-GMP [2], semidefinite programming solver using GMP. Actually,
> > > MPACK, multiple precision arithmetic version of BLAS and LAPACK I have
> > > developing is from the SDPA-GMP.
> > >
> > > I wonder what I can contribute to octave. Any advice is really appreciated.
> > >
> > > [1] http://mplapack.sourceforge.net/
> > > [2] http://sdpa.indsys.chuo-u.ac.jp/sdpa/download.html
> > >
> > > Best,
> > > -- Nakata Maho http://accc.riken.jp/maho/ , http://ja.openoffice.org/
> > >   Nakata Maho's PGP public keys: http://accc.riken.jp/maho/maho.pgp.txt
> > >
> > >       
> > Hello,
> >
> > Octave can conveniently be extended using external C++ packages. If
> > you'd like to contribute a multi-precision package, probably the best
> > way to start is to check out David Bateman's fixed point numbers
> > package:
> > http://octave.sourceforge.net/fixed/
> > I don't think we want multiprecision computing in Octave's core now,
> > but that may change in the future.
> >
> >
> > hth
> >
> > --
> > RNDr. Jaroslav Hajek
> > computing expert & GNU Octave developer
> > Aeronautical Research and Test Institute (VZLU)
> > Prague, Czech Republic
> > url: www.highegg.matfyz.cz
> >
> >     


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