Overflows after updating NIFTy
When updating to the new interpolation scheme (37a5691e), I get overflows in the minimization where I did not get any before. I am confused since the both gradient tests work better than before and the accuracy of the approximation is better. Maybe the operator works better now so that actually an inconsistency in my model is triggered or so. I have the feeling that it is not the operator's fault... ;)
@gedenhof can you share your observations about the overflows? If it is the same commit as for me, then I will go ahead and try to assemble a minimal demonstration case but I think this might be a lot of work so maybe we can find the problem without that.
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