C++ (Cpp) fmpz_add_si_inline Beispiele

Beispiel #1

Datei: t-add_si_inline.c Projekt: bluescarni/arb

int main()
{
    long iter;
    flint_rand_t state;

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

    flint_randinit(state);

    for (iter = 0; iter < 100000; iter++)
    {
        fmpz_t a, c, d;
        long b;

        fmpz_init(a);
        fmpz_init(c);
        fmpz_init(d);

        fmpz_randtest(a, state, 1 + n_randint(state, 200));
        fmpz_randtest(c, state, 1 + n_randint(state, 200));
        fmpz_randtest(d, state, 1 + n_randint(state, 200));
        b = n_randtest(state);

        fmpz_add_si(c, a, b);
        fmpz_add_si_inline(d, a, b);

        if (!fmpz_equal(c, d))
        {
            printf("FAIL\n");
            fmpz_print(a); printf("\n\n");
            printf("%ld", b); printf("\n\n");
            fmpz_print(c); printf("\n\n");
            fmpz_print(d); printf("\n\n");
            abort();
        }

        fmpz_add_si_inline(a, a, b);
        if (!fmpz_equal(c, a))
        {
            printf("FAIL (aliasing)\n");
            fmpz_print(a); printf("\n\n");
            printf("%ld", b); printf("\n\n");
            fmpz_print(c); printf("\n\n");
            fmpz_print(d); printf("\n\n");
            abort();
        }

        fmpz_clear(a);
        fmpz_clear(c);
        fmpz_clear(d);
    }

    flint_randclear(state);
    flint_cleanup();
    printf("PASS\n");
    return EXIT_SUCCESS;
}

Beispiel #2

Datei: add_mpn.c Projekt: argriffing/arb

/* computes x + y * 2^shift (optionally negated) */
slong
_fmpr_add_mpn(fmpr_t z,
        mp_srcptr xman, mp_size_t xn, int xsign, const fmpz_t xexp,
        mp_srcptr yman, mp_size_t yn, int ysign, const fmpz_t yexp,
        slong shift, slong prec, fmpr_rnd_t rnd)
{
    slong tn, zn, alloc, ret, shift_bits, shift_limbs;
    int negative;
    mp_limb_t tmp_stack[ADD_STACK_ALLOC];
    mp_limb_t cy;
    mp_ptr tmp, tmp2;

    shift_limbs = shift / FLINT_BITS;
    shift_bits = shift % FLINT_BITS;

    /* x does not overlap with y or the result -- outcome is
       equivalent to adding/subtracting a small number to/from y
       and rounding */
    if (shift > xn * FLINT_BITS &&
        prec != FMPR_PREC_EXACT &&
        xn * FLINT_BITS + prec - (FLINT_BITS * (yn - 1)) < shift)
    {
        zn = (prec + FLINT_BITS - 1) / FLINT_BITS;
        zn = FLINT_MAX(zn, yn) + 2;
        shift_limbs = zn - yn;
        alloc = zn;

        ADD_TMP_ALLOC

        flint_mpn_zero(tmp, shift_limbs);
        flint_mpn_copyi(tmp + shift_limbs, yman, yn);

        if (xsign == ysign)
        {
            tmp[0] = 1;
        }
        else
        {
            mpn_sub_1(tmp, tmp, zn, 1);
            while (tmp[zn-1] == 0)
                zn--;
        }

        ret = _fmpr_set_round_mpn(&shift, fmpr_manref(z), tmp, zn, ysign, prec, rnd);
        shift -= shift_limbs * FLINT_BITS;
        fmpz_add_si_inline(fmpr_expref(z), yexp, shift);

        ADD_TMP_FREE

        return ret;
    }