Helmut H. Strey

are you saying that it is working, or that you are in the process of implementing it? I am happy to help if it is in my set of skills.

thanks. I will give it a try. Can't we just fake compatibility by returning the derivatives from the FUNs. f(x::Dual) = Dual(f(x.value),f(x.partials)*f'(x.value)) - I am paraphrasing