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Committer:
Martin Alnes
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Date:
2011-11-10 17:45:02 UTC
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Revision ID:
martinal@simula.no-20111110174502-zf4iajr0y8p8wgps
Add function is_cellwise_constant to Expr, and using this instead of hacky is_spatially_constant function in differentiation. May solve some bugs related to missing cells and be a step towards lessening depencies on cell.