Method do

numpy/linalg/tests/test_linalg.py:650–656

(self, a, b, tags)

class EigCases(LinalgSquareTestCase, LinalgGeneralizedSquareTestCase):

    def do(self, a, b, tags):
        res = linalg.eig(a)
        eigenvalues, eigenvectors = res.eigenvalues, res.eigenvectors
        assert_allclose(matmul(a, eigenvectors),
            np.asarray(eigenvectors) * np.asarray(eigenvalues)[..., None, :],
            rtol=get_rtol(eigenvalues.dtype))
        assert_(consistent_subclass(eigenvectors, a))


class TestEig(EigCases):