def test_csr_apply_0(self):
vec = np.arange(30, dtype=float)
B = BO.for_vector(vec)
ref = B.apply(vec)
B.is_mixed_derivative = True
B = BOG.BandedOperator(B)
tst = B.apply(vec)
npt.assert_array_equal(ref, tst)
def test_derivative_solve_0(self):
x = np.linspace(0,1,500)
B = BO.for_vector(x)
B.D.data[1,:] += 1
B.D.data[1,0] = B.D.data[1,-1] = 2
BG = BOG.BandedOperator(B)
ref = np.e**x
tst = BG.apply(ref) / 2
fp(ref - tst, 'e')
npt.assert_allclose(tst, ref, rtol=1e-4, atol=1e-6,
err_msg="d/dx (apply) not accurate")
# fp(B.D.data)
tst = BG.solve(ref) * 2
npt.assert_allclose(ref, tst, rtol=1e-4, atol=1e-6,
err_msg="integral (solve) not accurate")
