Re: valarray

Dear Tomasz and Edmond,

Thank you very much for the hints. I appreciate your help.

Edmond Offermann wrote:
>
> You will find what you need in:
>
> AddElemMult, AddElemDiv, ElementMult and ElementDiv .
>
> Have also a look at the the Use function which allows you to assign an
> array to a TVector without copying .

Tomasz Bold wrote:

 >
 >    Yes you are right operator* is doing scalar product.
 >    I have found in the TVectorD.h
 >
 > TVectorD  &ElementMult  (TVectorD &target, const TVectorD  &source);

These methods do what I was looking for. However since these functions modify the first argument it seems more natural to define them as class methods. In my opinion non-member function should return new vectors instead of updating existing ones.

Otto Schaile wrote:

 >
 > this work  for me:
 >
 > root [0] Double_t x[2] = { 2,2}
 > root [1] Double_t y[2] = { 2,2}
 > root [2] TVectorD vx(2,x);
 > root [3] TVectorD vy(2,y);
 > root [4] vx*vy
 > (Double_t)8.00000000000000000e+00

Otto, this is not the function I was searching. Anyway thank you.

-- 
Yours faithfully,
Maxim Nikulin