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From: dmitry6243@my-deja.com
Subject: Re: Constructors/Destructors in Ada95
Date: 2000/10/26
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In article <uem14bvc6.fsf@wanadoo.fr>,
  Pascal Obry <p.obry@wanadoo.fr> wrote:
>
> dmitry6243@my-deja.com writes:
>
> > In article <39F6D201.73C006FA@acm.org>,
> >
> > function "*" (Left, Right : Matrix) return Matrix;  -- Produces a
new object
> > procedure "*" (Left : in out Matrix; Right : Matrix);  -- Multiplies
Left to
> > Right "in-place"
>
> I'am not an expert in this field but I really fail to see how it is
possible
> to multiply two matrix without creating a temporary one ! So I'am not
sure
> your example is a good one :)

It was about 15 years I wrote my last program for linear algebra. That
time memory was a treasure (:-)).

So I am not an expert too. In case of matrices one needs only one
row/column of scratch memory, which is of course better than an
allocation of the complete matrix.

And there are lots of special matrices used much oftener than general
dense matrices.

---
Regards,
Dmitry Kazakov


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