Function rgsl::interpolation::eval_integ

pub fn eval_integ(
    interp: &Interp, 
    xa: &[f64], 
    ya: &[f64], 
    a: f64, 
    b: f64, 
    acc: &mut InterpAccel
) -> f64

This function returns the numerical integral result of an interpolated function over the range [a, b], using the interpolation object interp, data arrays xa and ya and the accelerator acc.