C++ (Cpp) fmpz_poly_set_nmod_poly_unsigned Beispiele

Beispiel #1

Datei: ntru_poly.c Projekt: hasufell/pqc

void
fmpz_poly_mod_unsigned(fmpz_poly_t a,
		const uint32_t mod)
{
	nmod_poly_t nmod_tmp;

	nmod_poly_init(nmod_tmp, mod);

	fmpz_poly_get_nmod_poly(nmod_tmp, a);
	fmpz_poly_set_nmod_poly_unsigned(a, nmod_tmp);

	nmod_poly_clear(nmod_tmp);
}

Beispiel #2

Datei: t-CRT_ui_unsigned.c Projekt: goens/flint2

int
main(void)
{
    int i;
    flint_rand_t state;

    printf("CRT_ui_unsigned....");
    fflush(stdout);

    flint_randinit(state);

    for (i = 0; i < 10000; i++)
    {
        long bits, prime_bits, length, num_primes, j;
        fmpz_t mod;
        fmpz_poly_t A, B, C;
        nmod_poly_t Amod;
        mp_limb_t primes[1000];

        bits = n_randint(state, 500) + 1;
        length = n_randint(state, 30) + 1;
        prime_bits = 1 + n_randint(state, FLINT_BITS - 1);

        fmpz_poly_init(A);
        fmpz_poly_init(B);
        fmpz_poly_init(C);

        fmpz_poly_randtest_unsigned(A, state, length, bits);

        fmpz_init(mod);
        num_primes = 0;
        primes[0] = n_nextprime(1UL << prime_bits, 0);
        fmpz_set_ui(mod, primes[0]);

        while (fmpz_bits(mod) <= bits)
        {
            primes[num_primes + 1] = n_nextprime(primes[num_primes], 0);
            fmpz_mul_ui(mod, mod, primes[num_primes + 1]);
            num_primes++;
        }

        num_primes++;

        nmod_poly_init(Amod, primes[0]);
        fmpz_poly_get_nmod_poly(Amod, A);
        fmpz_poly_set_nmod_poly_unsigned(B, Amod);
        fmpz_set_ui(mod, primes[0]);

        for (j = 1; j < num_primes; j++)
        {
            nmod_poly_clear(Amod);
            nmod_poly_init(Amod, primes[j]);
            fmpz_poly_get_nmod_poly(Amod, A);
            fmpz_poly_CRT_ui(B, B, mod, Amod, 0);
            fmpz_mul_ui(mod, mod, primes[j]);
        }

        if (!fmpz_poly_equal(B, A))
        {
            printf("FAIL!\n");
            printf("primes: ");
            for (j = 0; j < num_primes; j++)
                printf("%lu ", primes[j]);
            printf("\nA: \n");
            fmpz_poly_print(A);
            printf("\nB: \n");
            fmpz_poly_print(B);
            printf("\n");
            abort();
        }

        nmod_poly_clear(Amod);
        fmpz_poly_clear(A);
        fmpz_poly_clear(B);
        fmpz_poly_clear(C);
        fmpz_clear(mod);
    }

    flint_randclear(state);
    _fmpz_cleanup();
    printf("PASS\n");
    return 0;
}