Re: An issue with function signatures

[Julien Bect]

Le 20/12/2018 à 09:56, JuanPi a écrit :
> Hi Julien.
> Thanks i have tried this idea, but found that you need some extra code 
> to detect if the point in which the derivatives are evaluated are the 
> same as the ones used to evaluate the function, to make sure that the 
> correspondence between function and derivatives holds. Otherwise you 
> are depending on the internal functioning of the optimiser, which can 
> be anything. Don't you suffer this problem?

Sure, you need some extra code, but it's not necessarily very complicated.

In my simple example, the extra code is just "~ isequal (p, p0)". If you 
have more arguments, you need more isequals.