def test_sym_to_vec():
sym = np.ones((3, 3))
sqrt2 = 1. / sqrt(2.)
vec = np.array([sqrt2, 1., sqrt2, 1., 1., sqrt2])
assert_array_almost_equal(sym_to_vec(sym), vec)
vec = np.array([1., 1., 1.])
assert_array_almost_equal(sym_to_vec(sym, discard_diagonal=True), vec)
def test_sym_to_vec():
sym = np.ones((3, 3))
sqrt2 = 1. / sqrt(2.)
vec = np.array([sqrt2, 1., sqrt2, 1., 1., sqrt2])
assert_array_almost_equal(sym_to_vec(sym), vec)
vec = np.array([1., 1., 1.])
assert_array_almost_equal(sym_to_vec(sym, discard_diagonal=True), vec)
def test_sym_to_vec():
sym = np.ones((3, 3))
vec = np.array([1., sqrt(2), 1., sqrt(2), sqrt(2), 1.])
assert_array_almost_equal(sym_to_vec(sym), vec)