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.