Error, error, unsupported BITS_PER_MP_LIMB #endif int mpz_kronecker_ui (mpz_srcptr a, unsigned long b) { mp_srcptr a_ptr = PTR(a); mp_size_t a_size; mp_limb_t a_rem; int result_bit1; a_size = SIZ(a); if (a_size == 0) return JACOBI_0U (b); if (b > GMP_NUMB_MAX) { mp_limb_t blimbs[2]; mpz_t bz; ALLOC(bz) = numberof (blimbs); PTR(bz) = blimbs; mpz_set_ui (bz, b); return mpz_kronecker (a, bz); } if ((b & 1) != 0) { result_bit1 = JACOBI_ASGN_SU_BIT1 (a_size, b); } else { mp_limb_t a_low = a_ptr[0]; int twos; if (b == 0) return JACOBI_LS0 (a_low, a_size); /* (a/0) */ if (! (a_low & 1)) return 0; /* (even/even)=0 */ /* (a/2)=(2/a) for a odd */ count_trailing_zeros (twos, b); b >>= twos; result_bit1 = (JACOBI_TWOS_U_BIT1 (twos, a_low) ^ JACOBI_ASGN_SU_BIT1 (a_size, b)); } if (b == 1) return JACOBI_BIT1_TO_PN (result_bit1); /* (a/1)=1 for any a */ a_size = ABS(a_size); /* (a/b) = (a mod b / b) */ JACOBI_MOD_OR_MODEXACT_1_ODD (result_bit1, a_rem, a_ptr, a_size, b); return mpn_jacobi_base (a_rem, (mp_limb_t) b, result_bit1); }
int mpz_si_kronecker (long a, mpz_srcptr b) { mp_srcptr b_ptr; mp_limb_t b_low; mp_size_t b_size; mp_size_t b_abs_size; mp_limb_t a_limb, b_rem; unsigned twos; int result_bit1; #if GMP_NUMB_BITS < BITS_PER_ULONG if (a > GMP_NUMB_MAX || a < -GMP_NUMB_MAX) { mp_limb_t alimbs[2]; mpz_t az; ALLOC(az) = numberof (alimbs); PTR(az) = alimbs; mpz_set_si (az, a); return mpz_kronecker (az, b); } #endif b_size = SIZ (b); if (b_size == 0) return JACOBI_S0 (a); /* (a/0) */ /* account for the effect of the sign of b, then ignore it */ result_bit1 = JACOBI_BSGN_SS_BIT1 (a, b_size); b_ptr = PTR(b); b_low = b_ptr[0]; b_abs_size = ABS (b_size); if ((b_low & 1) != 0) { /* b odd */ result_bit1 ^= JACOBI_ASGN_SU_BIT1 (a, b_low); a_limb = (unsigned long) ABS(a); if ((a_limb & 1) == 0) { /* (0/b)=1 for b=+/-1, 0 otherwise */ if (a_limb == 0) return (b_abs_size == 1 && b_low == 1); /* a even, b odd */ count_trailing_zeros (twos, a_limb); a_limb >>= twos; /* (a*2^n/b) = (a/b) * twos(n,a) */ result_bit1 ^= JACOBI_TWOS_U_BIT1 (twos, b_low); } }
int mpz_kronecker_si (mpz_srcptr a, long b) { mp_srcptr a_ptr; mp_size_t a_size; mp_limb_t a_rem, b_limb; int result_bit1; a_size = SIZ(a); if (a_size == 0) return JACOBI_0S (b); #if GMP_NUMB_BITS < BITS_PER_ULONG if (b > GMP_NUMB_MAX || b < -GMP_NUMB_MAX) { mp_limb_t blimbs[2]; mpz_t bz; ALLOC(bz) = numberof (blimbs); PTR(bz) = blimbs; mpz_set_si (bz, b); return mpz_kronecker (a, bz); } #endif result_bit1 = JACOBI_BSGN_SS_BIT1 (a_size, b); b_limb = (unsigned long) ABS (b); a_ptr = PTR(a); if ((b_limb & 1) == 0) { mp_limb_t a_low = a_ptr[0]; int twos; if (b_limb == 0) return JACOBI_LS0 (a_low, a_size); /* (a/0) */ if (! (a_low & 1)) return 0; /* (even/even)=0 */ /* (a/2)=(2/a) for a odd */ count_trailing_zeros (twos, b_limb); b_limb >>= twos; result_bit1 ^= JACOBI_TWOS_U_BIT1 (twos, a_low); }