def test_basic_ne_v():
x = RD.logistic(RD(3))
v = RD.logarithm(RD.logistic(RD(3)), np.e)
assert x!=v, Exception(f'test_basic_ne_v() has error.')
def test_basic_log_v():
x = RD(3)
derivative = RD.logarithm(x, 10)
assert (float(derivative.val) == np.log10(3)) & (float(x.get_gradient()) == 1/(np.log(10)*3)), Exception(f'test_basic_log_v() has error.')
