pub fn sobolev_norm(f: &[f64], df: &[f64], dx: f64, s: f64) -> f64Expand description
Compute an approximate H^s Sobolev norm ‖f‖_{H^s}.
Uses the discrete approximation
‖f‖²_{H^s} = ‖f‖²_{L²} + s·‖f'‖²_{L²}
where f' is supplied as df and s is the Sobolev order parameter.