Test failure for `test_multiply` in pytorch-latest CI job

[rgommers]

Observed in gh-59 and gh-61 with the same test case:
array_api_tests/test_operators_and_elementwise_functions.py::test_multiply[__imul__(x1, x2)]
just with different values. The reproducers:

FAILED array_api_tests/test_operators_and_elementwise_functions.py::test_multiply[__imul__(x1, x2)] - AssertionError: x1=(2+67138304j), but should be roughly (x1 * x2)=67138308j [__imul__()]
  x1=(9638+9638j), x2=(3483+3483j)
assert False
 +  where False = isclose(2.0, 0.0, 3.4028234663852886e+38)
 +    where 2.0 = (2+67138304j).real
 +    and   0.0 = 67138308j.real
Falsifying example: test_multiply(
    ctx=BinaryParamContext(<__imul__(x1, x2)>),
    data=data(...),
)
Draw 1 (x1): tensor(9638.+9638.j)
Draw 2 (x2): tensor(3483.+3483.j)

You can reproduce this example by temporarily adding @reproduce_failure('6.86.2', b'AXicY2eAA9Vl2JgMvLORmQA8GwLu') as a decorator on your test case

and

FAILED array_api_tests/test_operators_and_elementwise_functions.py::test_multiply[__imul__(x1, x2)] - AssertionError: x1=(-5+92034536j), but should be roughly (x1 * x2)=(-3+92034537j) [__imul__()]
  x1=(15339089+15339090j), x2=(3+3j)
assert False
 +  where False = isclose(-5.0, -3.0, 3.4028234663852886e+38)
 +    where -5.0 = (-5+92034536j).real
 +    and   -3.0 = (-3+92034537j).real
Falsifying example: test_multiply(
    ctx=BinaryParamContext(<__imul__(x1, x2)>),
    data=data(...),
)
Draw 1 (x1): tensor(15339089.+15339090.j)
Draw 2 (x2): tensor(3.+3.j)

You can reproduce this example by temporarily adding @reproduce_failure('6.86.1', b'AXicY2eAgVd8gQhmEAMCMCMzAVPvAqE=') as a decorator on your test case

A comment on gh-59 has a full traceback.

[asmeurer]

Probably the same sort of issue discussed at data-apis/array-api-tests#190. The test suite isn't checking complex number closeness correctly.

[asmeurer]

We're going to need to add this to the xfails (even if the test failure were legitimate, we can't do anything about operator methods). I think it's set up right now so it won't release unless the tests pass, so this has to be done.

[asmeurer]

This was fixed (CI is now passing).