Example #1
0
static void
acb_set_dddd(acb_t z, double a, double ar, double b, double br)
{
    arf_set_d(arb_midref(acb_realref(z)), a);
    mag_set_d(arb_radref(acb_realref(z)), ar);
    arf_set_d(arb_midref(acb_imagref(z)), b);
    mag_set_d(arb_radref(acb_imagref(z)), br);
}
Example #2
0
int main()
{
    flint_printf("spherical_y....");
    fflush(stdout);

    {
        slong i, n, m;
        acb_t z, w, x, y;

        acb_init(z);
        acb_init(w);
        acb_init(x);
        acb_init(y);

        i = 0;

        arb_set_str(acb_realref(x), "0.2", 64);
        arb_set_str(acb_imagref(x), "0.3", 64);
        arb_set_str(acb_realref(y), "0.3", 64);
        arb_set_str(acb_imagref(y), "0.4", 64);

        for (n = -4; n <= 4; n++)
        {
            for (m = -4; m <= 4; m++)
            {
                acb_hypgeom_spherical_y(z, n, m, x, y, 64);

                acb_set_d_d(w, testdata[2 * i], testdata[2 * i + 1]);
                mag_set_d(arb_radref(acb_realref(w)), 1e-13);
                mag_set_d(arb_radref(acb_imagref(w)), 1e-13);

                if (!acb_overlaps(z, w))
                {
                    flint_printf("FAIL: value\n\n");
                    flint_printf("n = %wd, m = %wd\n", n, m);
                    flint_printf("z = "); acb_printd(z, 20); flint_printf("\n\n");
                    flint_printf("w = "); acb_printd(w, 20); flint_printf("\n\n");
                    abort();
                }

                i++;
            }
        }

        acb_clear(z);
        acb_clear(w);
        acb_clear(x);
        acb_clear(y);
    }

    flint_cleanup();
    flint_printf("PASS\n");
    return EXIT_SUCCESS;
}
Example #3
0
int main()
{
    slong iter;
    flint_rand_t state;

    flint_printf("set_d....");
    fflush(stdout);

    flint_randinit(state);

    for (iter = 0; iter < 100000 * arb_test_multiplier(); iter++)
    {
        fmpr_t a, b, c;
        mag_t m;
        double x;

        fmpr_init(a);
        fmpr_init(b);
        fmpr_init(c);
        mag_init(m);

        x = d_randtest2(state);
        x = ldexp(x, 100 - n_randint(state, 200));

        if (n_randint(state, 100) == 0)
            x = 0.0;

        fmpr_set_d(a, x);
        mag_set_d(m, x);

        mag_get_fmpr(b, m);

        fmpr_set(c, a);
        fmpr_mul_ui(c, c, 1025, MAG_BITS, FMPR_RND_UP);
        fmpr_mul_2exp_si(c, c, -10);

        MAG_CHECK_BITS(m)

        if (!(fmpr_cmpabs(a, b) <= 0 && fmpr_cmpabs(b, c) <= 0))
        {
            flint_printf("FAIL\n\n");
            flint_printf("a = "); fmpr_print(a); flint_printf("\n\n");
            flint_printf("b = "); fmpr_print(b); flint_printf("\n\n");
            flint_printf("c = "); fmpr_print(c); flint_printf("\n\n");
            abort();
        }

        fmpr_clear(a);
        fmpr_clear(b);
        fmpr_clear(c);
        mag_clear(m);
    }

    flint_randclear(state);
    flint_cleanup();
    flint_printf("PASS\n");
    return EXIT_SUCCESS;
}
Example #4
0
int main()
{
    slong iter;
    flint_rand_t state;

    flint_printf("cauchy_bound....");
    fflush(stdout);

    flint_randinit(state);

    for (iter = 0; iter < 100; iter++)
    {
        arb_t b, radius, ans;
        acb_t x;
        slong r, prec, maxdepth;

        arb_init(b);
        arb_init(radius);
        arb_init(ans);
        acb_init(x);

        acb_set_ui(x, 5);

        r = 1 + n_randint(state, 10);
        arb_set_ui(radius, r);

        prec = 2 + n_randint(state, 100);
        maxdepth = n_randint(state, 10);

        acb_calc_cauchy_bound(b, sin_x, NULL, x, radius, maxdepth, prec);

        arf_set_d(arb_midref(ans), answers[r-1]);
        mag_set_d(arb_radref(ans), 1e-8);

        if (!arb_overlaps(b, ans))
        {
            flint_printf("FAIL\n");
            flint_printf("r = %wd, prec = %wd, maxdepth = %wd\n\n", r, prec, maxdepth);
            arb_printd(b, 15); flint_printf("\n\n");
            arb_printd(ans, 15); flint_printf("\n\n");
            abort();
        }

        arb_clear(b);
        arb_clear(radius);
        arb_clear(ans);
        acb_clear(x);
    }

    flint_randclear(state);
    flint_cleanup();
    flint_printf("PASS\n");
    return EXIT_SUCCESS;
}
Example #5
0
/*     - is contained in emb +/- rad 2 */
void randomized_embedding(arb_t res, double emb, double rad1, double rad2)
{
    double t; /* in +/- (rad2 - rad1) / 2 */
    double r; /* in [rad1 + |t|, rad2 - |t|]*/

    if (rad1 <= 0 || rad2 <= 0 || rad1 >= rad2)
        abort();

    t = (rad1 - rad2) / 2 + (rand() * (rad2 - rad1)) / RAND_MAX;

    if (2 * fabs(t) > (rad2 - rad1))
        abort();

    r = (rad1 + fabs(t)) + (rand() * (rad2 - rad1 - 2 * fabs(t))) / RAND_MAX;
    if (r < rad1 + fabs(t) || r > rad2 - fabs(t))
        abort();

    arf_set_d(arb_midref(res), emb + t);
    mag_set_d(arb_radref(res), r);
}
Example #6
0
int main()
{
    slong iter;
    flint_rand_t state;

    flint_printf("euler_product_real_ui....");
    fflush(stdout);
    flint_randinit(state);

    for (iter = 0; iter < 3000 * arb_test_multiplier(); iter++)
    {
        arb_t res1, res2;
        ulong s;
        slong prec1, prec2, accuracy;
        int choice, reciprocal1, reciprocal2;

        if (iter % 10 == 0)
        {
            s = n_randtest(state);
            prec1 = 2 + n_randint(state, 300);
            prec2 = 2 + n_randint(state, 300);
        }
        else
        {
            s = 6 + n_randint(state, 1 << n_randint(state, 12));
            prec1 = 2 + n_randint(state, 12 * s);
            prec2 = 2 + n_randint(state, 12 * s);
        }

        if (n_randint(state, 30)  == 0)
            prec1 = 2 + n_randint(state, 4000);

        choice = n_randint(state, 7);
        reciprocal1 = n_randint(state, 2);
        reciprocal2 = n_randint(state, 2);

        arb_init(res1);
        arb_init(res2);
        arb_randtest(res1, state, 200, 100);

        _acb_dirichlet_euler_product_real_ui(res1, s, chi[choice] + 1,
            chi[choice][0], reciprocal1, prec1);
        _acb_dirichlet_euler_product_real_ui(res2, s, chi[choice] + 1,
            chi[choice][0], reciprocal2, prec2);

        if (reciprocal1 != reciprocal2)
            arb_inv(res2, res2, prec2);

        if (!arb_overlaps(res1, res2))
        {
            flint_printf("FAIL: overlap\n\n");
            flint_printf("s = %wu\n\n", s);
            flint_printf("chi: %d\n", choice);
            flint_printf("res1 = "); arb_printd(res1, prec1 / 3.33); flint_printf("\n\n");
            flint_printf("res2 = "); arb_printd(res2, prec2 / 3.33); flint_printf("\n\n");
            abort();
        }

        if (s >= 6 && prec1 < 2 * s * log(s))
        {
            accuracy = arb_rel_accuracy_bits(res1);

            if (accuracy < prec1 - 4)
            {
                flint_printf("FAIL: accuracy = %wd, prec = %wd\n\n", accuracy, prec1);
                flint_printf("res1 = "); arb_printd(res1, prec1 / 3.33); flint_printf("\n\n");
                abort();
            }
        }

        if (s == 10)
        {
            arf_set_d(arb_midref(res2), L10[choice]);
            mag_set_d(arb_radref(res2), 1e-15);
            if (reciprocal1)
                arb_inv(res2, res2, 53);

            if (!arb_overlaps(res1, res2))
            {
                flint_printf("FAIL: overlap (2)\n\n");
                flint_printf("s = %wu\n\n", s);
                flint_printf("chi: %d\n", choice);
                flint_printf("res1 = "); arb_printd(res1, prec1 / 3.33); flint_printf("\n\n");
                flint_printf("res2 = "); arb_printd(res2, prec2 / 3.33); flint_printf("\n\n");
                abort();
            }
        }

        arb_clear(res1);
        arb_clear(res2);
    }

    flint_randclear(state);
    flint_cleanup();
    flint_printf("PASS\n");
    return EXIT_SUCCESS;
}
Example #7
0
int main()
{
    slong iter;
    flint_rand_t state;

    flint_printf("agm1....");
    fflush(stdout);

    flint_randinit(state);

    /* check particular values against table */
    {
        acb_t z, t;
        acb_ptr w1;
        slong i, j, prec, cnj;

        acb_init(z);
        acb_init(t);
        w1 = _acb_vec_init(NUM_DERIVS);

        for (prec = 32; prec <= 512; prec *= 4)
        {
            for (i = 0; i < NUM_TESTS; i++)
            {
                for (cnj = 0; cnj < 2; cnj++)
                {
                    if (cnj == 1 && agm_testdata[i][0] < 0 &&
                        agm_testdata[i][1] == 0)
                        continue;

                    acb_zero(z);
                    arf_set_d(arb_midref(acb_realref(z)), agm_testdata[i][0]);
                    arf_set_d(arb_midref(acb_imagref(z)), cnj ? -agm_testdata[i][1] : agm_testdata[i][1]);

                    acb_agm1_cpx(w1, z, NUM_DERIVS, prec);

                    for (j = 0; j < NUM_DERIVS; j++)
                    {
                        arf_set_d(arb_midref(acb_realref(t)), agm_testdata[i][2+2*j]);
                        mag_set_d(arb_radref(acb_realref(t)), fabs(agm_testdata[i][2+2*j]) * EPS);
                        arf_set_d(arb_midref(acb_imagref(t)), cnj ? -agm_testdata[i][2+2*j+1] : agm_testdata[i][2+2*j+1]);
                        mag_set_d(arb_radref(acb_imagref(t)), fabs(agm_testdata[i][2+2*j+1]) * EPS);

                        if (!acb_overlaps(w1 + j, t))
                        {
                            flint_printf("FAIL\n\n");
                            flint_printf("j = %wd\n\n", j);
                            flint_printf("z = "); acb_printd(z, 15); flint_printf("\n\n");
                            flint_printf("t = "); acb_printd(t, 15); flint_printf("\n\n");
                            flint_printf("w1 = "); acb_printd(w1 + j, 15); flint_printf("\n\n");
                            abort();
                        }
                    }
                }
            }
        }

        _acb_vec_clear(w1, NUM_DERIVS);
        acb_clear(z);
        acb_clear(t);
    }

    /* self-consistency test */
    for (iter = 0; iter < 1000 * arb_test_multiplier(); iter++)
    {
        acb_ptr m1, m2;
        acb_t z1, z2, t;
        slong i, len1, len2, prec1, prec2;

        len1 = n_randint(state, 10);
        len2 = n_randint(state, 10);

        prec1 = 2 + n_randint(state, 2000);
        prec2 = 2 + n_randint(state, 2000);

        m1 = _acb_vec_init(len1);
        m2 = _acb_vec_init(len2);

        acb_init(z1);
        acb_init(z2);
        acb_init(t);

        acb_randtest(z1, state, prec1, 1 + n_randint(state, 100));

        if (n_randint(state, 2))
        {
            acb_set(z2, z1);
        }
        else
        {
            acb_randtest(t, state, prec2, 1 + n_randint(state, 100));
            acb_add(z2, z1, t, prec2);
            acb_sub(z2, z2, t, prec2);
        }

        acb_agm1_cpx(m1, z1, len1, prec1);
        acb_agm1_cpx(m2, z2, len2, prec2);

        for (i = 0; i < FLINT_MIN(len1, len2); i++)
        {
            if (!acb_overlaps(m1 + i, m2 + i))
            {
                flint_printf("FAIL (overlap)\n\n");
                flint_printf("iter = %wd, i = %wd, len1 = %wd, len2 = %wd, prec1 = %wd, prec2 = %wd\n\n",
                    iter, i, len1, len2, prec1, prec2);

                flint_printf("z1 = "); acb_printd(z1, 30); flint_printf("\n\n");
                flint_printf("z2 = "); acb_printd(z2, 30); flint_printf("\n\n");
                flint_printf("m1 = "); acb_printd(m1, 30); flint_printf("\n\n");
                flint_printf("m2 = "); acb_printd(m2, 30); flint_printf("\n\n");
                abort();
            }
        }

        _acb_vec_clear(m1, len1);
        _acb_vec_clear(m2, len2);

        acb_clear(z1);
        acb_clear(z2);
        acb_clear(t);
    }

    flint_randclear(state);
    flint_cleanup();
    flint_printf("PASS\n");
    return EXIT_SUCCESS;
}
Example #8
0
void
mag_log1p(mag_t z, const mag_t x)
{
    if (mag_is_special(x))
    {
        if (mag_is_zero(x))
            mag_zero(z);
        else
            mag_inf(z);
    }
    else
    {
        fmpz exp = MAG_EXP(x);

        if (!COEFF_IS_MPZ(exp))
        {
            /* Quick bound by x */
            if (exp < -10)
            {
                mag_set(z, x);
                return;
            }
            else if (exp < 1000)
            {
                double t;
                t = ldexp(MAG_MAN(x), exp - MAG_BITS);
                t = (1.0 + t) * (1 + 1e-14);
                t = mag_d_log_upper_bound(t);
                mag_set_d(z, t);
                return;
            }
        }
        else if (fmpz_sgn(MAG_EXPREF(x)) < 0)
        {
            /* Quick bound by x */
            mag_set(z, x);
            return;
        }

        /* Now we must have x >= 2^1000 */
        /* Use log(2^(exp-1) * (2*v)) = exp*log(2) + log(2*v) */
        {
            double t;
            fmpz_t b;
            mag_t u;

            mag_init(u);
            fmpz_init(b);

            /* incrementing the mantissa gives an upper bound for x+1 */
            t = ldexp(MAG_MAN(x) + 1, 1 - MAG_BITS);
            t = mag_d_log_upper_bound(t);
            mag_set_d(u, t);

            /* log(2) < 744261118/2^30 */
            _fmpz_add_fast(b, MAG_EXPREF(x), -1);
            fmpz_mul_ui(b, b, 744261118);
            mag_set_fmpz(z, b);
            _fmpz_add_fast(MAG_EXPREF(z), MAG_EXPREF(z), -30);

            mag_add(z, z, u);

            mag_clear(u);
            fmpz_clear(b);
        }
    }
}