void F_mpz_mod_poly_realloc(F_mpz_mod_poly_t poly, const ulong alloc)
{
if (!alloc) // alloc == 0, clear up
{
F_mpz_mod_poly_clear(poly);
poly->coeffs = NULL;
poly->alloc = 0;
poly->length = 0;
return;
}
if (poly->alloc) // realloc
{
F_mpz_mod_poly_truncate(poly, alloc);
poly->coeffs = (F_mpz *) flint_heap_realloc(poly->coeffs, alloc);
if (alloc > poly->alloc)
F_mpn_clear(poly->coeffs + poly->alloc, alloc - poly->alloc);
} else // nothing allocated already so do it now
{
poly->coeffs = (mp_limb_t*) flint_heap_alloc(alloc);
F_mpn_clear(poly->coeffs, alloc);
}
poly->alloc = alloc;
}
int test_F_mpn_mul_precache()
{
mp_limb_t * int1, * int2, * product, * product2;
F_mpn_precache_t precache;
mp_limb_t msl;
int result = 1;
unsigned long count;
for (count = 0; (count < 30) && (result == 1); count++)
{
unsigned long limbs2 = randint(2*FLINT_FFT_LIMBS_CROSSOVER)+1;
unsigned long limbs1 = randint(2*FLINT_FFT_LIMBS_CROSSOVER)+1;
int1 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs1);
mpn_random2(int1, limbs1);
F_mpn_mul_precache_init(precache, int1, limbs1, limbs2);
unsigned long count2;
for (count2 = 0; (count2 < 30) && (result == 1); count2++)
{
#if DEBUG
printf("%ld, %ld\n",limbs1, limbs2);
#endif
unsigned long limbs3 = randint(limbs2)+1;
int2 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs3);
product = (mp_limb_t *) malloc(sizeof(mp_limb_t)*(limbs1+limbs2));
product2 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*(limbs1+limbs2));
F_mpn_clear(int2, limbs3);
mpn_random2(int2, limbs3);
F_mpn_mul_precache(product, int2, limbs3, precache);
if (limbs1 > limbs3) msl = mpn_mul(product2, int1, limbs1, int2, limbs3);
else msl = mpn_mul(product2, int2, limbs3, int1, limbs1);
unsigned long j;
for (j = 0; j < limbs1+limbs3 - (msl == 0); j++)
{
if (product[j] != product2[j]) result = 0;
}
free(product2);
free(product);
free(int2);
}
F_mpn_mul_precache_clear(precache);
free(int1);
}
return result;
}
int test_F_mpn_mul()
{
mp_limb_t * int1, * int2, * product, * product2;
mp_limb_t msl, msl2;
int result = 1;
unsigned long count;
for (count = 0; (count < 30) && (result == 1); count++)
{
unsigned long limbs2 = randint(2*FLINT_FFT_LIMBS_CROSSOVER)+1;
unsigned long limbs1 = limbs2 + randint(1000);
int1 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs1);
mpn_random2(int1, limbs1);
unsigned long count2;
for (count2 = 0; (count2 < 30) && (result == 1); count2++)
{
#if DEBUG
printf("%ld, %ld\n",limbs1, limbs2);
#endif
int2 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs2);
product = (mp_limb_t *) malloc(sizeof(mp_limb_t)*(limbs1+limbs2));
product2 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*(limbs1+limbs2));
F_mpn_clear(int2, limbs2);
mpn_random2(int2, randint(limbs2-1)+1);
msl = F_mpn_mul(product, int1, limbs1, int2, limbs2);
msl2 = mpn_mul(product2, int1, limbs1, int2, limbs2);
unsigned long j;
for (j = 0; j < limbs1+limbs2 - (msl == 0); j++)
{
if (product[j] != product2[j]) result = 0;
}
result &= (msl == msl2);
free(product2);
free(product);
free(int2);
}
free(int1);
}
return result;
}
void F_mpz_mod_poly_init2(F_mpz_mod_poly_t poly, const F_mpz_t P, const ulong alloc)
{
if (alloc) // allocate space for alloc small coeffs
{
poly->coeffs = (F_mpz *) flint_heap_alloc(alloc);
F_mpn_clear(poly->coeffs, alloc);
}
else poly->coeffs = NULL;
F_mpz_init(poly->P);
F_mpz_set(poly->P, P);
poly->alloc = alloc;
poly->length = 0;
}
int test_F_mpn_splitcombine_bits()
{
mp_limb_t * int1, * int2;
ZmodF_poly_t poly;
int result = 1;
unsigned long count;
for (count = 0; (count < 30000) && (result == 1); count++)
{
unsigned long limbs = randint(300)+1;
unsigned long bits = randint(500)+1;
unsigned long coeff_limbs = randint(100) + (bits-1)/FLINT_BITS + 1;
unsigned long length = (FLINT_BITS*limbs - 1)/bits + 1;
unsigned long log_length = 0;
while ((1L << log_length) < length) log_length++;
#if DEBUG
printf("limbs = %ld, bits = %ld, coeff_limbs = %ld\n", limbs, bits, coeff_limbs);
#endif
int1 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs);
int2 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs);
ZmodF_poly_init(poly, log_length, coeff_limbs, 0);
mpn_random2(int1, limbs);
F_mpn_FFT_split_bits(poly, int1, limbs, bits, coeff_limbs);
F_mpn_clear(int2, limbs);
F_mpn_FFT_combine_bits(int2, poly, bits, coeff_limbs, limbs);
#if DEBUG
F_mpn_printx(int1, limbs); printf("\n\n");
unsigned long i;
for (i = 0; i < length; i++) { F_mpn_printx(poly->coeffs[i], coeff_limbs); printf("\n");}
printf("\n");
F_mpn_printx(int2, limbs); printf("\n\n");
#endif
unsigned long j;
for (j = 0; j < limbs; j++)
{
if (int1[j] != int2[j]) result = 0;
}
ZmodF_poly_clear(poly);
free(int2);
free(int1);
}
return result;
}
void fmpz_mul_2exp(fmpz_t output, fmpz_t x, unsigned long exp)
{
unsigned long limbs = (exp >> FLINT_LG_BITS_PER_LIMB);
unsigned long bits = (exp & (FLINT_BITS - 1));
mp_limb_t msl = 0L;
if (x[0] == 0)
{
output[0] = 0L;
return;
}
if (bits)
{
msl = mpn_lshift(output + limbs + 1, x + 1, FLINT_ABS(x[0]), bits);
if (msl) output[limbs + FLINT_ABS(x[0]) + 1] = msl;
} else F_mpn_copy(output + limbs + 1, x + 1, FLINT_ABS(x[0]));
if (limbs) F_mpn_clear(output + 1, limbs);
if ((long) x[0] >= 0L) output[0] = x[0] + limbs + (msl != 0L);
else output[0] = x[0] - limbs - (msl != 0L);
}
void compute_B_terms(QS_t * qs_inf, poly_t * poly_inf)
{
unsigned long s = poly_inf->s;
unsigned long * A_ind = poly_inf->A_ind;
unsigned long * A_modp = poly_inf->A_modp;
unsigned long * B_terms = poly_inf->B_terms;
prime_t * factor_base = qs_inf->factor_base;
unsigned long limbs = qs_inf->prec+1;
unsigned long limbs2;
unsigned long * A = poly_inf->A;
unsigned long * B = poly_inf->B;
unsigned long p, i;
unsigned long * temp1 = (unsigned long *) flint_stack_alloc(limbs);
unsigned long temp;
mp_limb_t msl;
double pinv;
for (i = 0; i < s; i++)
{
p = factor_base[A_ind[i]].p;
pinv = z_precompute_inverse(p);
mpn_divmod_1(temp1 + 1, A + 1, A[0], p);
temp1[0] = A[0] - (temp1[A[0]] == 0);
A_modp[i] = (temp = mpn_mod_1(temp1 + 1, temp1[0], p));
temp = z_invert(temp, p);
temp = z_mulmod_precomp(temp, qs_inf->sqrts[A_ind[i]], p, pinv);
if (temp > p/2) temp = p - temp;
msl = mpn_mul_1(B_terms + i*limbs + 1, temp1 + 1, temp1[0], temp);
if (msl)
{
B_terms[i*limbs + temp1[0] + 1] = msl;
B_terms[i*limbs] = temp1[0] + 1;
}
else B_terms[i*limbs] = temp1[0];
#if B_TERMS
mpz_t temp;
mpz_init(temp);
fmpz_to_mpz(temp, B_terms + i*limbs);
gmp_printf("B_%ld = %Zd\n", i, temp);
mpz_clear(temp);
#endif
}
F_mpn_copy(B, B_terms, B_terms[0]+1); // Set B to the sum of the B terms
if (limbs > B_terms[0] + 1) F_mpn_clear(B + B_terms[0] + 1, limbs - B_terms[0] - 1);
for (i = 1; i < s; i++)
{
limbs2 = B_terms[i*limbs];
msl = mpn_add_n(B+1, B+1, B_terms + i*limbs + 1, limbs2);
if (msl) mpn_add_1(B + limbs2 + 1, B + limbs2 + 1, limbs - limbs2 - 1, msl);
}
B[0] = limbs - 1;
while (!B[B[0]] && B[0]) B[0]--;
#if B_TERMS
mpz_t temp2;
mpz_init(temp2);
fmpz_to_mpz(temp2, B);
gmp_printf("B = %Zd\n", temp2);
mpz_clear(temp2);
#endif
flint_stack_release(); // release temp1
}
int test_F_mpn_mul_precache_trunc()
{
mp_limb_t * int1, * int2, * product, * product2;
F_mpn_precache_t precache;
mp_limb_t msl;
int result = 1;
unsigned long count;
for (count = 0; (count < 30) && (result == 1); count++)
{
unsigned long limbs2 = randint(2*FLINT_FFT_LIMBS_CROSSOVER)+1;
unsigned long limbs1 = randint(2*FLINT_FFT_LIMBS_CROSSOVER)+1;
int1 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs1);
mpn_random2(int1, limbs1);
F_mpn_mul_precache_init(precache, int1, limbs1, limbs2);
unsigned long count2;
for (count2 = 0; (count2 < 30) && (result == 1); count2++)
{
unsigned long limbs3 = randint(limbs2)+1;
unsigned long trunc = randint(2*(limbs1+limbs3));
#if DEBUG
printf("limbs1 = %ld, limbs3 = %ld, trunc = %ld\n", limbs1, limbs3, trunc);
#endif
int2 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*limbs3);
product = (mp_limb_t *) malloc(sizeof(mp_limb_t)*(limbs1+limbs2));
product2 = (mp_limb_t *) malloc(sizeof(mp_limb_t)*(limbs1+limbs2));
F_mpn_clear(int2, limbs3);
mpn_random2(int2, limbs3);
if (limbs1 > limbs3) F_mpn_mul_trunc(product2, int1, limbs1, int2, limbs3, trunc);
else F_mpn_mul_trunc(product2, int2, limbs3, int1, limbs1, trunc);
F_mpn_mul_precache_trunc(product, int2, limbs3, precache, trunc);
unsigned long j;
for (j = 0; j < FLINT_MIN(trunc, limbs1+limbs3); j++)
{
if (product[j] != product2[j])
{
printf("Failure at %ld\n", j);
result = 0;
}
}
free(product2);
free(product);
free(int2);
}
F_mpn_mul_precache_clear(precache);
free(int1);
}
return result;
}
