Method check

numpy/core/tests/test_mem_overlap.py:718–721

(ufunc, a, ind, out)

    def test_binary_ufunc_reduceat_manual(self):
        def check(ufunc, a, ind, out):
            c1 = ufunc.reduceat(a.copy(), ind.copy(), out=out.copy())
            c2 = ufunc.reduceat(a, ind, out=out)
            assert_array_equal(c1, c2)

        # Exactly same input/output arrays
        a = np.arange(10000, dtype=np.int16)