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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Serious conflict between Dynamic and -1 in Diagonal<>
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Tue, 10 Jul 2012 15:20:51 +0200
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Hi,
it has to be of the same type as integral constants (1, 2, 10, etc.)
when used as a template parameter. Otherwise, we would had to do
something like:
Eigen::Matrix<double, Eigen::Size<3>, Eigen::Size<4> >
to declare a 3x4 matrix.
So there is no way we can detect users don't write Diagonal<MatrixXd,
Dynamic>, but well, according to the (future) documentation, it's like
someone write:
Diagonal<MatrixXd, Eigen::Success>
That's ok wrt the compiler, and we cannot detect such mistake, but it
just does not make sens.
gael
On Tue, Jul 10, 2012 at 3:05 PM, Rhys Ulerich <rhys.ulerich@xxxxxxxxx> wrote:
>> Not sure how you'd
>> accomplish that cleanly since DynamicSize is signed and DynamicIndex
>> has to be signed.
>
> I take that back if you'd intended to use a tag type and not an enum
> for DynamicIndex. Curiosity, why was Dynamic made an integer instead
> of a tag type?
>
> - Rhys
>
>