Re: [Help-gsl] Numerical integration QAGS cannot reach tolerance and aborts

[Klaus Huthmacher]

Dear Vipin,

> //  double f = cos(n*x)*log((cos(a) - cos(x))/(x - a));//

Is it possible that the argument of your logarithm can be zero for PI? Or
that you divide by zero, if x-a becomes zero for PI?

Kind regards,
  Klaus.