Function rgsl::interpolation::eval

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

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.