Esempi in C++ (Cpp) per fmpz_mat_max_bits

Esempio n. 1

File: mul.c Progetto: hemmecke/flint2

void
fmpz_mat_mul(fmpz_mat_t C, const fmpz_mat_t A, const fmpz_mat_t B)
{
    long dim, m, n, k, ab, bb;

    m = A->r;
    n = A->c;
    k = B->c;

    if (C == A || C == B)
    {
        fmpz_mat_t t;
        fmpz_mat_init(t, m, k);
        fmpz_mat_mul(t, A, B);
        fmpz_mat_swap(C, t);
        fmpz_mat_clear(t);
        return;
    }

    dim = FLINT_MIN(FLINT_MIN(m, n), k);

    if (dim < 10)
    {
        fmpz_mat_mul_classical(C, A, B);
        return;
    }

    ab = fmpz_mat_max_bits(A);
    bb = fmpz_mat_max_bits(B);

    ab = FLINT_ABS(ab);
    bb = FLINT_ABS(bb);

    if (5*(ab + bb) > dim * dim)
    {
        fmpz_mat_mul_classical(C, A, B);
    }
    else
    {
        _fmpz_mat_mul_multi_mod(C, A, B, ab + bb + FLINT_BIT_COUNT(n) + 1);
    }
}

Esempio n. 2

File: t-max_bits.c Progetto: clear731/lattice

int
main(void)
{
    slong m, n, rep, res1, res2;
    FLINT_TEST_INIT(state);

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

    

    for (rep = 0; rep < 100 * flint_test_multiplier(); rep++)
    {
        fmpz_mat_t A;

        m = n_randint(state, 20);
        n = n_randint(state, 20);

        fmpz_mat_init(A, m, n);
        fmpz_mat_randtest(A, state, 1 + n_randint(state, 100));

        res1 = fmpz_mat_max_bits(A);
        res2 = _fmpz_vec_max_bits(A->entries, m*n);

        if (res1 != res2)
        {
            flint_printf("FAIL!\n");
            abort();
        }

        fmpz_mat_clear(A);
    }

    FLINT_TEST_CLEANUP(state);
    
    flint_printf("PASS\n");
    return 0;
}