示例#1
0
def test_log_neg():
    x = AD(-0.3, 1, 'x')
    with pytest.raises(ValueError):
        z = x.ln()
示例#2
0
def test_log():
    x = AD(0.5, 1, 'x')
    z = x.ln()
    assert z.val == [np.log(0.5)]
    assert z.der == [1 / 0.5]
示例#3
0
def test_log_0():
    x = AD(0, 1, 'x')
    with pytest.raises(ValueError):
        z = x.ln()