Function tests pass for order 3 at tolerance 1e-10
Function tests pass for order 3 derivatives at tolerance 1e-10
Interpolation tests FAIL for order 3 at tolerance 1e-10 error 0.0158506
Interpolation tests FAIL for order 3 derivatives at tolerance 1e-10 error 0.642421
Interpolation tests FAIL for order 3 at tolerance 1e-10 error 0.0204176
Interpolation tests FAIL for order 3 derivatives at tolerance 1e-10 error 0.362479