def test_roots_chebys(): weightf = orth.chebys(5).weight_func verify_gauss_quad(sc.roots_chebys, orth.eval_chebys, weightf, -2., 2., 5) verify_gauss_quad(sc.roots_chebys, orth.eval_chebys, weightf, -2., 2., 25) verify_gauss_quad(sc.roots_chebys, orth.eval_chebys, weightf, -2., 2., 100) x, w = sc.roots_chebys(5, False) y, v, m = sc.roots_chebys(5, True) assert_allclose(x, y, 1e-14, 1e-14) assert_allclose(w, v, 1e-14, 1e-14) muI, muI_err = integrate.quad(weightf, -2, 2) assert_allclose(m, muI, rtol=muI_err) assert_raises(ValueError, sc.roots_chebys, 0) assert_raises(ValueError, sc.roots_chebys, 3.3)
def test_roots_chebys(): weightf = orth.chebys(5).weight_func verify_gauss_quad(sc.roots_chebys, sc.eval_chebys, weightf, -2., 2., 5) verify_gauss_quad(sc.roots_chebys, sc.eval_chebys, weightf, -2., 2., 25) verify_gauss_quad(sc.roots_chebys, sc.eval_chebys, weightf, -2., 2., 100) x, w = sc.roots_chebys(5, False) y, v, m = sc.roots_chebys(5, True) assert_allclose(x, y, 1e-14, 1e-14) assert_allclose(w, v, 1e-14, 1e-14) muI, muI_err = integrate.quad(weightf, -2, 2) assert_allclose(m, muI, rtol=muI_err) assert_raises(ValueError, sc.roots_chebys, 0) assert_raises(ValueError, sc.roots_chebys, 3.3)