def test_cse_not_possible():
# No substitution possible.
e = Add(x, y)
substs, reduced = cse([e])
assert substs == []
assert reduced == [x + y]
# issue 6329
eq = (meijerg((1, 2), (y, 4), (5,), [], x) +
meijerg((1, 3), (y, 4), (5,), [], x))
assert cse(eq) == ([], [eq])
def test_cse_not_possible():
# No substitution possible.
e = Add(x, y)
substs, reduced = cse([e])
assert substs == []
assert reduced == [x + y]
# issue sympy/sympy#6329
eq = (meijerg((1, 2), (y, 4), (5,), [], x) +
meijerg((1, 3), (y, 4), (5,), [], x))
assert cse(eq) == ([], [eq])
def _eval_rewrite_as_meijerg(self, z):
return meijerg(((S.Half, S.Half), []),
((S.Zero, ), (S.Zero, )), -z) / 2
def _eval_rewrite_as_meijerg(self, *args):
if len(args) == 1:
z = args[0]
return -meijerg(((S.Half, Rational(3, 2)), []),
((S.Zero, ), (S.Zero, )), -z) / 4