Integration in ROOT

I’m trying to use integration in ROOT however root crashes without any message. Can someone help me here?
Here is the code, the second #include command contains <iostream but two angle brackets cause it to remove it from the post for some reason.

#include "Math/Integrator.h"

// #include<iostream>

// using namespace std;

double f(double x){

    return (pow(x,2));


void temp()

{ROOT::Math::Functor1D testFunc(&f);

ROOT::Math::Integrator ig(testFunc,ROOT::Math::IntegrationOneDim::kGAUSS);


double val = ig.Integral(0,2);


Please read tips for efficient and successful posting and posting code

ROOT Version: 6.20/00
Platform: Windows
Compiler: Not Provided

See the “Tips for Efficient and Successful Posting” and then “Posting code? Read this first!”.

Sorry for posting the full code here but the code is short, and I don’t know what is causing this to happen.

Fix errors reported by:
root [0] .L temp.cxx++

root [0] .L temp.Cpp++
Info in <TWinNTSystem::ACLiC>: creating shared library C:/Users/akasp/root/macros/temp_Cpp.dll
input_line_12:7:28: error: use of undeclared identifier 'IC'
"C:/Users/akasp/root/etc" -IC:/Users/akasp/root/etc//cling -IC:/Users/akasp/root/include"",
Error in <ACLiC>: Dictionary generation failed!

@bellenot No such variable is present in the code

This issue with ACLiC has been fixed in more recent version of ROOT (e.g. 6.20.04)

1 Like

Is there any way to update the root version without replacing the whole binary, ie through command line?

No, sorry, the only way is to replace everything