[ROOT] TVECTOR3 as an argument.

From: Stathis Stefanidis (Stathis.Stefanidis@cern.ch)
Date: Wed Sep 11 2002 - 15:49:07 MEST


Hello ,

I am trying to pass a TVECTOR3 as an argument to function created by me ,
and the thing seems not to work. I work on RedHat Linux v7.2 and the
3.02/07 version of ROOT.

The code looks like
 
 gSystem->Load("libPhysics");
 Float_t my_func(TVector3 p_one, TVector3 p_two);

 void main()
    {
     gSystem->Load("libPhysics");
       ......
     TVector3 *a = new TVector3(5.0, 6.0, 7.0);
     TVector3 *b = new TVector3(2.0, 5.0, 2.0);
  
     Float_t c = my_func(a,b);
       .......

     }
 
  Float_t my_func(TVector3 *p_one, TVector3  *p_two)
      {   
     
        gSystem->Load("libPhysics");
       
        Float_t k1 = p_one->Mag(); 
        Float_t k2 = p_two->Mag(); 

        return sqrt(k1*k2);
     }
 
The error i get is :
 
Error: Illegal Assignment to an undeclared symbol TVector3*p_one FILE:testing.C LINE:20
Error: Illegal Assignment to an undeclared symbol TVector3*p_two FILE:testing.C LINE:20
*** Interpreter error recovered ***

 What do i miss?
Thanks in advance.

 



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