pub fn frechet_decide_certified_2d(
a: &[Point2],
b: &[Point2],
eps: f64,
) -> Result<FrechetDecision, FrechetError>pub fn frechet_decide_certified_2d(
a: &[Point2],
b: &[Point2],
eps: f64,
) -> Result<FrechetDecision, FrechetError>