| Re: [eigen] Sparse -- Diagonal product |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Sparse -- Diagonal product
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Wed, 20 May 2009 13:58:22 +0200
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On Wed, May 20, 2009 at 1:50 PM, Justin Carlson <justinca@xxxxxxxxxx> wrote:
> I was a bit surprised today to figure out that Eigen current evaluates
> the product of a diagonal matrix with a sparse matrix as a dense
> matrix.
yes I'm aware of that.
> Is this intentional?
not at all.
> Is there a design rationale for this, or is it just that no
> appropriate specializations have been implemented yet for this case?
the reason in indeed: "it's just that no appropriate specializations
have been implemented yet for this case".
> If there aren't objections to changing the behavior, I'll see about
> submitting a patch.
would be great !
> Thanks,
> -J
>
>
>