def test_arctan_n1(self):
x = 0.123
a = nthderiv.arctan(x, n=1)
b = 1 / (x * x + 1)
assert_allclose(a, b)
def test_arctan_n1(self):
x = 0.123
a = nthderiv.arctan(x, n=1)
b = 1 / (x*x + 1)
assert_allclose(a, b)
def test_arctan_n0(self):
x = 0.123
a = nthderiv.arctan(x, n=0)
b = np.arctan(x)
assert_allclose(a, b)
def test_arctan_n0(self):
x = 0.123
a = nthderiv.arctan(x, n=0)
b = np.arctan(x)
assert_allclose(a, b)
