Function rgsl::integration::qk15

pub fn qk15<F: Fn(f64) -> f64>(f: F, a: f64, b: f64) -> (f64, f64, f64, 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.

Returns (result, abs_err, resabs, resasc).