Exemplo n.º 1
0
def test_dmp_zz_mignotte_bound():
    assert dmp_zz_mignotte_bound([[2], [3], [4]], 1, ZZ) == 32
Exemplo n.º 2
0
def test_dmp_zz_mignotte_bound():
    assert dmp_zz_mignotte_bound([[2],[3],[4]], 1, ZZ) == 32
Exemplo n.º 3
0
def test_dmp_zz_wang():
    p = ZZ(nextprime(dmp_zz_mignotte_bound(w_1, 2, ZZ)))

    assert p == ZZ(6291469)

    t_1, k_1, e_1 = dmp_normal([[1], []], 1, ZZ), 1, ZZ(-14)
    t_2, k_2, e_2 = dmp_normal([[1, 0]], 1, ZZ), 2, ZZ(3)
    t_3, k_3, e_3 = dmp_normal([[1], [1, 0]], 1, ZZ), 2, ZZ(-11)
    t_4, k_4, e_4 = dmp_normal([[1], [-1, 0]], 1, ZZ), 1, ZZ(-17)

    T = [t_1, t_2, t_3, t_4]
    K = [k_1, k_2, k_3, k_4]
    E = [e_1, e_2, e_3, e_4]

    T = zip(T, K)

    A = [ZZ(-14), ZZ(3)]

    S = dmp_eval_tail(w_1, A, 2, ZZ)
    cs, s = dup_primitive(S, ZZ)

    assert cs == 1 and s == S == \
        dup_normal([1036728, 915552, 55748, 105621, -17304, -26841, -644], ZZ)

    assert dmp_zz_wang_non_divisors(E, cs, 4, ZZ) == [7, 3, 11, 17]
    assert dup_sqf_p(s, ZZ) and dup_degree(s) == dmp_degree(w_1, 2)

    _, H = dup_zz_factor_sqf(s, ZZ)

    h_1 = dup_normal([44, 42, 1], ZZ)
    h_2 = dup_normal([126, -9, 28], ZZ)
    h_3 = dup_normal([187, 0, -23], ZZ)

    assert H == [h_1, h_2, h_3]

    lc_1 = dmp_normal([[-4], [-4, 0]], 1, ZZ)
    lc_2 = dmp_normal([[-1, 0, 0], []], 1, ZZ)
    lc_3 = dmp_normal([[1], [], [-1, 0, 0]], 1, ZZ)

    LC = [lc_1, lc_2, lc_3]

    assert dmp_zz_wang_lead_coeffs(w_1, T, cs, E, H, A, 2, ZZ) == (w_1, H, LC)

    H_1 = [
        dmp_normal(t, 0, ZZ)
        for t in [[44L, 42L, 1L], [126L, -9L, 28L], [187L, 0L, -23L]]
    ]
    H_2 = [
        dmp_normal(t, 1, ZZ)
        for t in [[[-4, -12], [-3, 0], [1]], [[-9, 0], [-9], [-2, 0]],
                  [[1, 0, -9], [], [1, -9]]]
    ]
    H_3 = [
        dmp_normal(t, 1, ZZ)
        for t in [[[-4, -12], [-3, 0], [1]], [[-9, 0], [-9], [-2, 0]],
                  [[1, 0, -9], [], [1, -9]]]
    ]

    c_1 = dmp_normal([-70686, -5863, -17826, 2009, 5031, 74], 0, ZZ)
    c_2 = dmp_normal(
        [[9, 12, -45, -108, -324], [18, -216, -810, 0],
         [2, 9, -252, -288, -945], [-30, -414, 0], [2, -54, -3, 81], [12, 0]],
        1, ZZ)
    c_3 = dmp_normal(
        [[-36, -108, 0], [-27, -36, -108], [-8, -42, 0], [-6, 0, 9], [2, 0]],
        1, ZZ)

    T_1 = [dmp_normal(t, 0, ZZ) for t in [[-3, 0], [-2], [1]]]
    T_2 = [dmp_normal(t, 1, ZZ) for t in [[[-1, 0], []], [[-3], []], [[-6]]]]
    T_3 = [dmp_normal(t, 1, ZZ) for t in [[[]], [[]], [[-1]]]]

    assert dmp_zz_diophantine(H_1, c_1, [], 5, p, 0, ZZ) == T_1
    assert dmp_zz_diophantine(H_2, c_2, [ZZ(-14)], 5, p, 1, ZZ) == T_2
    assert dmp_zz_diophantine(H_3, c_3, [ZZ(-14)], 5, p, 1, ZZ) == T_3

    factors = dmp_zz_wang_hensel_lifting(w_1, H, LC, A, p, 2, ZZ)

    assert dmp_expand(factors, 2, ZZ) == w_1
Exemplo n.º 4
0
def test_dmp_zz_wang():
    p = ZZ(nextprime(dmp_zz_mignotte_bound(w_1, 2, ZZ)))

    assert p == ZZ(6291469)

    t_1, k_1, e_1 = dmp_normal([[1],[]], 1, ZZ), 1, ZZ(-14)
    t_2, k_2, e_2 = dmp_normal([[1, 0]], 1, ZZ), 2, ZZ(3)
    t_3, k_3, e_3 = dmp_normal([[1],[ 1, 0]], 1, ZZ), 2, ZZ(-11)
    t_4, k_4, e_4 = dmp_normal([[1],[-1, 0]], 1, ZZ), 1, ZZ(-17)

    T = [t_1, t_2, t_3, t_4]
    K = [k_1, k_2, k_3, k_4]
    E = [e_1, e_2, e_3, e_4]

    T = zip(T, K)

    A = [ZZ(-14), ZZ(3)]

    S = dmp_eval_tail(w_1, A, 2, ZZ)
    cs, s = dup_primitive(S, ZZ)

    assert cs == 1 and s == S == \
        dup_normal([1036728, 915552, 55748, 105621, -17304, -26841, -644], ZZ)

    assert dmp_zz_wang_non_divisors(E, cs, 4, ZZ) == [7, 3, 11, 17]
    assert dup_sqf_p(s, ZZ) and dup_degree(s) == dmp_degree(w_1, 2)

    _, H = dup_zz_factor_sqf(s, ZZ)

    h_1 = dup_normal([44,  42,   1], ZZ)
    h_2 = dup_normal([126, -9,  28], ZZ)
    h_3 = dup_normal([187,  0, -23], ZZ)

    assert H == [h_1, h_2, h_3]

    lc_1 = dmp_normal([[-4], [-4,0]], 1, ZZ)
    lc_2 = dmp_normal([[-1,0,0], []], 1, ZZ)
    lc_3 = dmp_normal([[1], [], [-1,0,0]], 1, ZZ)

    LC = [lc_1, lc_2, lc_3]

    assert dmp_zz_wang_lead_coeffs(w_1, T, cs, E, H, A, 2, ZZ) == (w_1, H, LC)

    H_1 = [ dmp_normal(t, 0, ZZ) for t in [[44L,42L,1L],[126L,-9L,28L],[187L,0L,-23L]] ]
    H_2 = [ dmp_normal(t, 1, ZZ) for t in [[[-4,-12],[-3,0],[1]],[[-9,0],[-9],[-2,0]],[[1,0,-9],[],[1,-9]]] ]
    H_3 = [ dmp_normal(t, 1, ZZ) for t in [[[-4,-12],[-3,0],[1]],[[-9,0],[-9],[-2,0]],[[1,0,-9],[],[1,-9]]] ]

    c_1 = dmp_normal([-70686,-5863,-17826,2009,5031,74], 0, ZZ)
    c_2 = dmp_normal([[9,12,-45,-108,-324],[18,-216,-810,0],[2,9,-252,-288,-945],[-30,-414,0],[2,-54,-3,81],[12,0]], 1, ZZ)
    c_3 = dmp_normal([[-36,-108,0],[-27,-36,-108],[-8,-42,0],[-6,0,9],[2,0]], 1, ZZ)

    T_1 = [ dmp_normal(t, 0, ZZ) for t in [[-3,0],[-2],[1]] ]
    T_2 = [ dmp_normal(t, 1, ZZ) for t in [[[-1,0],[]],[[-3],[]],[[-6]]] ]
    T_3 = [ dmp_normal(t, 1, ZZ) for t in [[[]],[[]],[[-1]]] ]

    assert dmp_zz_diophantine(H_1, c_1,        [], 5, p, 0, ZZ) == T_1
    assert dmp_zz_diophantine(H_2, c_2, [ZZ(-14)], 5, p, 1, ZZ) == T_2
    assert dmp_zz_diophantine(H_3, c_3, [ZZ(-14)], 5, p, 1, ZZ) == T_3

    factors = dmp_zz_wang_hensel_lifting(w_1, H, LC, A, p, 2, ZZ)

    assert dmp_expand(factors, 2, ZZ) == w_1