>>> The has_affine_map seems like a big payoff to avoid repeating the
>>> flops to determine it...
> 
> I'd say we might want to profile that before we make too big a deal
> out of calling it a lot.  For Quad4's it's two point subtractions and
> one equality test, for Hex8's it's at most 6 point subtractions and 4
> equality tests, some of which may short-circuit if the element is not
> affine.

Well, take a look at the Hex27, which would be the element for the CH
application I believe...

-Ben



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