Function rgsl::interpolation::eval_e

pub fn eval_e(
    interp: &Interp,
    xa: &[f64],
    ya: &[f64],
    x: f64,
    acc: &mut InterpAccel,
    y: &mut f64
) -> Value

This function returns the interpolated value of y for a given point x, using the interpolation object interp, data arrays xa and ya and the accelerator acc. When x is outside the range of xa, the error code ::Dom is returned with a value of rgsl::NAN for y.