Function rgsl::integration::qk15

pub fn qk15<T>(f: function<T>, arg: &mut T, a: f64, b: f64, result: &mut f64, abserr: &mut f64, resabs: &mut f64, resasc: &mut f64)

Gauss quadrature weights and kronrod quadrature abscissae and weights as evaluated with 80 decimal digit arithmetic by L. W. Fullerton, Bell Labs, Nov. 1981.