Re: [eigen] Passing Eigen::Map types to functions that take Eigen types

[Christoph Hertzberg <chtz@xxxxxxxxxxxxxxxxxxxxxxxx>]

On 01.07.2015 17:55, Martin Felis wrote:
> Replacing do_work with do_work_ref as suggested by Christoph Hertzberg
> does work. This would still mean I have to change my library code.
>
> Would it be possible to subclass MatrixXd to take a pointer and use that
> instead of creating a new one?

This would be possible. You might even reinterpret_cast a Map<MatrixXd>& 
to a MatrixXd& -- I would of course strongly advise against that, mostly 
because this is merely a hack and you will likely risk compatibility, 
eventually.
Is there a good reason, why your library must take MatrixXd& instead of 
Ref<MatrixXd>? Or why you can't change your library code?


Christoph


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Dipl.-Inf., Dipl.-Math. Christoph Hertzberg
Cartesium 0.049
Universität Bremen
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