Aha thanks, very good to know the bigger data type also applies to vectors within math expressions!
@afre also thanks for demonstrating the drawbacks with summed area, it’s good to make everyone aware. There will definitely be occasions where it causes a problem. It seems to me many of the possible “fixes” would negate the speed advantage, but I think it’s still useful without that.
Edit: Hmm, I guess we could do a 64bit cumulate inside the begin() portion of a fill? 