Function auto_pad_nd 

pub fn auto_pad_nd<S, D>(
    x: &ArrayBase<S, D>,
    config: &AutoPadConfig,
    axes: Option<&[usize]>,
) -> FFTResult<ArrayD<Complex<f64>>>
where
    S: Data<Elem = Complex<f64>>,
    D: Dimension,

Automatic padding for N-dimensional arrays