[eigen] New true array class ?

[Boris Mansencal <boris.mansencal@xxxxxxxx>]

Hi,

I have some questions relative to Gael's work on true Array class  
(with component wise operations) :
- Has its fork been merged with main development branch ?
- How do we declare a vector and apply sin() to it ?
  The following code does not compile (with both branches) :
  Eigen::ArrayXd v1(N);
  //...
  Eigen::ArrayXd v2 = sin(v1);

Thanks a lot,

Boris.