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# Test functionality that enables user-defined procedures to be applied
# to an expression until it no longer changes (the user-defined analogue
# of the 'repeat=True' option).
def fixed(fun, obj):
while fun(obj).state()==result_t.changed:
print "ran"
return obj
def runit(ex):
join_gamma(ex)
distribute(ex, keepstate=True)
sort_product(ex, keepstate=True)
print(ex)
return ex
def test02():
\delta_{m n}::KroneckerDelta.
\Gamma_{#}::GammaMatrix(metric=\delta).
obj3a:= \Gamma_{c d}\Gamma_{m1 m2 m3}\Gamma_{n1 n2};
return fixed(runit, obj3a)
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