Re: FW:Can one treat long double type Matrix in liboctave?

[Tatsuro MATSUOKA]

Hello David

I will upload your reply to the octave threads in Japan.

Thanks!!

Tatsuro

--- dbateman wrote:

> 
> 
> 
> Tatsuro MATSUOKA-2 wrote:
> > 
> > Hello
> > 
> > The below is the translation of the inquiry in the Japanese Octave thread
> > 
> > The questioner asked about the liboctave.
> > He asked whether the long double type can be used in Matrix class in the
> > liboctave.
> > If the above is possible, please give him the way to treat that.
> > 
> > Regards
> > 
> > Tatsuro
> > 
> 
> You could easily instantiate the NDArray or Matrix classes with a long
> double, but many of the operations such as matrix multiplication, left
> division, etc are special cased so these operations would need to be
> implemented as well if they are to be used. So the answer to the question is
> "maybe", as it depends on how much effort the person want to put into the
> writing the instantiation of the Matrix and NDArray classes for long doubles
> and what they really want to do with the code onces its written
> 
> I added the single precision type last year and so if you want an idea of
> the amount of effort needed to add the long double type long at the patch.
> 
> http://hg.savannah.gnu.org/hgweb/octave/rev/82be108cc558
> 
> Without long double versions of the vlas/lapack, etc functions making this
> change for long double would be difficult.
> 
> D.
> 
> 
> 
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