Power ** and ^ in TF1 and TFormula

From: MuPT Software Developer (norbert.danneberg@psi.ch)
Date: Thu Apr 15 1999 - 17:22:09 MEST 

Hi ,

In an TF1 and TFormula Object ** and ^ both seem to represent the power
function.
Drawing  g1 derfined as the following

   TFormula *g1 = new TFormula("g1","exp(-((x-3)^2)/4^2)");

or

   TFormula *g1 = new TFormula("g1","exp(-((x-3)**2)/4**2)");

f1 = new TF1("f1","g1",0,10);
f1->Draw();

both give the same result

but  the sum  with a second function g2 only works with the first
definition (^) not with (**)

 TFormula *g2 = new TFormula("g2","exp(-((x-1*.68)^2)/3^2)");


f2 = new TF1("f2","g1+g2",0,10);
f2->Draw();

So using ** should be avoided ??

Cheers

Norbert

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