masked functions

[Kulakov, Igor]

Hi Matthias,

Just a thought.
I think that implementation of masked operations is very nice. How about to generalize it on functions?

I mean to have a possibility to call a function, which returns vector arguments, both like this:  

  CopyData( dataIn, dataOut(mask) )

to change only masked elements
and like this:

  CopyData( dataIn, dataOut )

to copy everything.

Than one would not care about masks when implement new functions.
May be this is already possible to do with current Vc implementation?

Regards,
Igor