File
"/usr/local/lib/python2.6/dist-packages/ffc/quadrature/sumobj.py",
line 495, in reduce_vartype
f, r = v.reduce_vartype(var_type)
ValueError: too many values to unpack
when using foo/2.0 rather than 0.5*foo.
Garth
from dolfin import *
mesh = UnitSquare(3, 3)
n = FacetNormal(mesh)
PV = VectorFunctionSpace(mesh, "CG", 1)
P0 = FunctionSpace(mesh, "Discontinuous Lagrange", 0)
mixed_space = MixedFunctionSpace([PV, P0])
# Function spaces and functions
r = TestFunction(P0)
U0 = Function(mixed_space)
u0, s0 = split(U0)
U0.vector()[:] = 1.0
F = 1.0/(s0**2 + 1.0)
# This breaks FFC
un = (dot(u0, n) + sqrt(dot(u0, n)*dot(u0, n)))/2.0
un_h = (dot(u0, n) - sqrt(dot(u0, n)*dot(u0, n)))/2.0
# This works
#un = 0.5*(dot(u0, n) + sqrt(dot(u0, n)*dot(u0, n)))
#un_h = 0.5*(dot(u0, n) - sqrt(dot(u0, n)*dot(u0, n)))
L = jump(r)*(un('+')*F('+') - un('-')*F('-'))*dS
param0 = {"representation": "quadrature", "optimize": False}
param1 = {"representation": "quadrature", "optimize": True}
print "Vec norm (no opt): ", assemble(L,
form_compiler_parameters=param0).norm("l2")
print "Vec norm (with opt): ", assemble(L,
form_compiler_parameters=param1).norm("l2")
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