flint-sys 0.9.0

Bindings to the FLINT C library
Documentation 
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

/*
    Copyright (C) 2014 Fredrik Johansson

    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 "ulong_extras.h"
#include "fmpz.h"
#include "fmpz_mod.h"
#include "fmpz_mod_poly.h"

TEST_FUNCTION_START(fmpz_mod_poly_set_trunc, state)
{
    int i, result;
    fmpz_mod_ctx_t ctx;

    fmpz_mod_ctx_init_ui(ctx, 2);

    for (i = 0; i < 1000 * flint_test_multiplier(); i++)
    {
        fmpz_mod_poly_t a, b, c;
        fmpz_t p;
        slong n;

        fmpz_init(p);

        fmpz_set_ui(p, n_randtest_prime(state, 0));
        fmpz_mod_ctx_set_modulus(ctx, p);

        fmpz_mod_poly_init(a, ctx);
        fmpz_mod_poly_init(b, ctx);
        fmpz_mod_poly_init(c, ctx);

        fmpz_mod_poly_randtest(a, state, n_randint(state, 100), ctx);
        fmpz_mod_poly_randtest(b, state, n_randint(state, 100), ctx);
        n = n_randint(state, 50);

        fmpz_mod_poly_set_trunc(b, a, n, ctx);
        fmpz_mod_poly_set(c, a, ctx);
        fmpz_mod_poly_truncate(c, n, ctx);

        result = (fmpz_mod_poly_equal(b, c, ctx));
        if (!result)
        {
            flint_printf("FAIL:\n");
            fmpz_mod_poly_print(a, ctx), flint_printf("\n\n");
            fmpz_mod_poly_print(b, ctx), flint_printf("\n\n");
            fmpz_mod_poly_print(c, ctx), flint_printf("\n\n");
            fflush(stdout);
            flint_abort();
        }

        fmpz_mod_poly_set_trunc(a, a, n, ctx);

        result = (fmpz_mod_poly_equal(a, c, ctx));
        if (!result)
        {
            flint_printf("FAIL (aliasing):\n");
            fmpz_mod_poly_print(a, ctx), flint_printf("\n\n");
            fmpz_mod_poly_print(c, ctx), flint_printf("\n\n");
            fflush(stdout);
            flint_abort();
        }

        fmpz_clear(p);

        fmpz_mod_poly_clear(a, ctx);
        fmpz_mod_poly_clear(b, ctx);
        fmpz_mod_poly_clear(c, ctx);
    }

    fmpz_mod_ctx_clear(ctx);

    TEST_FUNCTION_END(state);
}