It would be interesting to see what would happen testing my PR. In many ways, I envy the testing framework you guys have now, because of the finite difference checks and the different type instantiations. Back when I did my implementation, I was mortally afraid of results being wrong (especially given what I’m using it for), so I wrote as little code as possible to leave less surface area for errors.
TL;DR: In my day, we walked to school in the snow uphill both ways. We ate dirt, and we were thankful.
I’ll be back in the office Monday & will try to check. Also, I may be slow to respond next week due to an industry meeting I have to attend. Apologies in advance.