infinity in root

From: <suneel_at_puhep.res.in>
Date: Tue, 10 Mar 2009 09:34:53 +0530


Hi All,

  I am trying to performing one dimensional integration using root. For that I am using Integrator class of root. I want to evaluate the integral for the limits between (-infinity) to (+infinity). I an using the following piece code
double x1 = 0;
double x2 = 200;
TF1 *fBW = new
TF1("fBW","TMath::Exp(-0.5*((((x-90)*(x-90))/(12.3*12.3))))",1); fBW->Integral(x1,x2);

I am not able to understand how to represent infinity in root so that the integral gets calculated for limits between (-infinity) to (+infinity).

Thanks a lot in advance for any kind of help.

With Regards

Suneel Dutt Received on Tue Mar 10 2009 - 05:05:09 CET

This archive was generated by hypermail 2.2.0 : Tue Mar 10 2009 - 23:50:02 CET