Method test_chebmul

numpy/polynomial/tests/test_chebyshev.py:93–101

(self)

            assert_equal(cheb.chebmulx(ser), tgt)

    def test_chebmul(self):
        for i in range(5):
            for j in range(5):
                msg = f"At i={i}, j={j}"
                tgt = np.zeros(i + j + 1)
                tgt[i + j] += .5
                tgt[abs(i - j)] += .5
                res = cheb.chebmul([0]*i + [1], [0]*j + [1])
                assert_equal(trim(res), trim(tgt), err_msg=msg)

    def test_chebdiv(self):
        for i in range(5):