UFL Specification and User Manual 0.3 - FEniCS Project
UFL Specification and User Manual 0.3 - FEniCS Project
UFL Specification and User Manual 0.3 - FEniCS Project
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<strong>UFL</strong> <strong>Specification</strong> <strong>and</strong> <strong>User</strong> <strong>Manual</strong> <strong>0.3</strong>Martin S. Alnæs, Anders Logg5.1.4 L A TEXformattingSee chapter about comm<strong>and</strong>line utilities.5.1.5 Dot formattingSee chapter about comm<strong>and</strong>line utilities.5.2 Inspecting <strong>and</strong> manipulating the expressiontreeThis subsection is mostly for form compiler developers <strong>and</strong> technically interestedusers.TODO: More details about traversal <strong>and</strong> transformation algorithms for developers.5.2.1 Traversing expressionsiter expressionsq = f*vr = g*vs = u*va = q*dx(0) + r*dx(1) + s*ds(0)for e in iter_expressions(a):print str(e)83
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