[Ipopt] Scaling before derivative check

[Aydin Buluc]

Hi members,

Does anybody know if any scaling is performed before the derivative checker.
I get somewhat a weird result like:

* jac_g [    0,    0] =  3.1688006045557596e+01 v  ~  2.9688006045557596e+01
 [ 6.737e-02]

Shouldn't the number in brackets be the difference between the finite
difference estimate and the provided derivative (2.000 in this case)?


Thanks,
- Aydin
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