flint3-sys 3.2.3

Rust bindings to the FLINT C library
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94

/*
    Copyright (C) 2023 Jean Kieffer

    This file is part of FLINT.

    FLINT is free software: you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License (LGPL) as published
    by the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.  See <https://www.gnu.org/licenses/>.
*/

#include "test_helpers.h"
#include "acb_mat.h"
#include "acb_theta.h"

TEST_FUNCTION_START(acb_theta_ql_a0_split, state)
{
    slong iter;

    /* Test: agrees with ql_a0_naive using ql_a0_naive as worker */
    for (iter = 0; iter < 10 * flint_test_multiplier(); iter++)
    {
        slong g = 2 + n_randint(state, 2);
        slong n = 1 << g;
        slong s = 1 + n_randint(state, g - 1);
        int hast = iter % 2;
        slong nbt = (hast ? 3 : 1);
        slong prec = 50 + n_randint(state, 50);
        slong hprec = prec + 25;
        slong guard = 0;
        slong lp = ACB_THETA_LOW_PREC;
        slong bits = n_randint(state, 4);
        acb_mat_t tau;
        acb_ptr z, t, r, test;
        arb_ptr d, d0;
        slong k;
        int res;

        acb_mat_init(tau, g, g);
        z = _acb_vec_init(g);
        t = _acb_vec_init(g);
        r = _acb_vec_init(nbt * n);
        test = _acb_vec_init(2 * nbt * n);
        d = _arb_vec_init(n);
        d0 = _arb_vec_init(n);

        acb_siegel_randtest_reduced(tau, state, hprec, bits);
        acb_siegel_randtest_vec(z, state, g, hprec);
        if (hast)
        {
            for (k = 0; k < g; k++)
            {
                arb_urandom(acb_realref(&t[k]), state, hprec);
            }
        }

        acb_theta_dist_a0(d0, t, tau, lp);
        acb_theta_dist_a0(d, z, tau, lp);

        res = acb_theta_ql_a0_split(r, t, z, d, tau, s, guard, prec,
            &acb_theta_ql_a0_naive);
        acb_theta_ql_a0_naive(test, t, z, d0, d, tau, guard, hprec);

        if (!_acb_vec_is_zero(z, g))
        {
            _acb_vec_set(test, test + nbt * n, nbt * n);
        }

        if (res && !_acb_vec_overlaps(r, test, nbt * n))
        {
            flint_printf("FAIL\n");
            flint_printf("g = %wd, s = %wd, prec = %wd, tau, z:\n", g, s, prec);
            acb_mat_printd(tau, 5);
            _acb_vec_printd(z, g, 5);
            flint_printf("output:\n");
            _acb_vec_printd(r, nbt * n, 5);
            _acb_vec_printd(test, nbt * n, 5);
            flint_printf("difference:\n");
            _acb_vec_sub(test, test, r, nbt * n, prec);
            _acb_vec_printd(test, nbt * n, 5);
            flint_abort();
        }

        acb_mat_clear(tau);
        _acb_vec_clear(z, g);
        _acb_vec_clear(t, g);
        _acb_vec_clear(r, nbt * n);
        _acb_vec_clear(test, 2 * nbt * n);
        _arb_vec_clear(d, n);
        _arb_vec_clear(d0, n);
    }

    TEST_FUNCTION_END(state);
}