Test extrapolation of macroelements using a non-nested mesh hierarchy #3757
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dham
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Sep 11, 2024
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Description
Previously, CG macroelements would extrapolate to zero by default, and DG macroelements were extrapolating to nan, as they computed 1/0 as the subcell multiplicity. This PR tests that macroelements can correctly extrapolate global polynomials, while also testing non-nested multigrid functionality (only prolongation).
Depends on firedrakeproject/fiat#82 (merged)