Function tests pass for order 2 at tolerance 1e-10
Function tests pass for order 2 derivatives at tolerance 1e-10
Interpolation tests FAIL for order 2 at tolerance 1e-10 error 0.0544638
Interpolation tests FAIL for order 2 derivatives at tolerance 1e-10 error 2.12463
Interpolation tests FAIL for order 2 at tolerance 1e-10 error 0.091335
Interpolation tests FAIL for order 2 derivatives at tolerance 1e-10 error 1.65185