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4 changes: 2 additions & 2 deletions numpy/_core/tests/test_multiarray.py
Original file line number Diff line number Diff line change
Expand Up @@ -7333,15 +7333,15 @@ def apply_mode(m, mode):
(m.shape[0] * 2, m.shape[1] * 2), dtype=m.dtype, order=order
)[::2, ::2]
retval[...] = m
return retval
return retval

is_complex = np.issubdtype(dtype, np.complexfloating)
m1 = self.m1.astype(dtype) + (1j if is_complex else 0)
m2 = self.m2.astype(dtype) + (1j if is_complex else 0)
dot_res = np.dot(m1, m2)
mo = np.zeros_like(dot_res)

for mode in itertools.product(*[modes]*3):
for mode in itertools.product(*[modes] * 3):
m1_, m2_, mo_ = [apply_mode(*x) for x in zip([m1, m2, mo], mode)]
assert_equal(np.matmul(m1_, m2_, out=mo_), dot_res)

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