Re: [eigen] Recursion and block matrices

[Christoph Hertzberg <chtz@xxxxxxxxxxxxxxxxxxxxxxxx>]

On 18.09.2012 17:51, Norman Goldstein wrote:
> I figured this one out by decomposing the C++ statements until the
> compiler message was more specific.
> It turns out that the compiler was being asked to match Stride<0,0> with
> Stride<-1,-1>.  The former is
> defaulted in some declarations, while the latter is for dynamic stride.
> When would one want to use
> Stride<0,0>?

Stride<0,0> means "natural" stride, so colstride is number of rows, 
rowstride is 1 (assuming colmajor matrices).
Have you yet tried to use the Ref<MatrixXd> class, as Gael suggested 
some mails ago? Or are you implementing this more for the fun of it?

Christoph


> > > On 08/28/2012 01:01 AM, Gael Guennebaud wrote:
> > > > With the devel branch you might try:
> > > >
> > > > void incr(Ref<MatrixXd> mat) {
> > > >
> > > > // no cast needed
> > > > ...
> > > >
> > > > }


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Dipl.-Inf. Christoph Hertzberg
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