84 lines · c
1#include <isl_int.h>2 3uint32_t isl_imath_hash(mp_int v, uint32_t hash)4{5 unsigned const char *data = (unsigned char *)v->digits;6 unsigned const char *end = data + v->used * sizeof(v->digits[0]);7 8 if (v->sign == 1)9 isl_hash_byte(hash, 0xFF);10 for (; data < end; ++data)11 isl_hash_byte(hash, *data);12 return hash;13}14 15/* Try a standard conversion that fits into a long.16 */17int isl_imath_fits_slong_p(mp_int op)18{19 long out;20 mp_result res = mp_int_to_int(op, &out);21 return res == MP_OK;22}23 24/* Try a standard conversion that fits into an unsigned long.25 */26int isl_imath_fits_ulong_p(mp_int op)27{28 unsigned long out;29 mp_result res = mp_int_to_uint(op, &out);30 return res == MP_OK;31}32 33void isl_imath_addmul_ui(mp_int rop, mp_int op1, unsigned long op2)34{35 mpz_t temp;36 mp_int_init(&temp);37 38 mp_int_set_uvalue(&temp, op2);39 mp_int_mul(op1, &temp, &temp);40 mp_int_add(rop, &temp, rop);41 42 mp_int_clear(&temp);43}44 45void isl_imath_submul_ui(mp_int rop, mp_int op1, unsigned long op2)46{47 mpz_t temp;48 mp_int_init(&temp);49 50 mp_int_set_uvalue(&temp, op2);51 mp_int_mul(op1, &temp, &temp);52 mp_int_sub(rop, &temp, rop);53 54 mp_int_clear(&temp);55}56 57/* Compute the division of lhs by a rhs of type unsigned long, rounding towards58 * positive infinity (Ceil).59 */60void isl_imath_cdiv_q_ui(mp_int rop, mp_int lhs, unsigned long rhs)61{62 mpz_t temp;63 mp_int_init(&temp);64 65 mp_int_set_uvalue(&temp, rhs);66 impz_cdiv_q(rop, lhs, &temp);67 68 mp_int_clear(&temp);69}70 71/* Compute the division of lhs by a rhs of type unsigned long, rounding towards72 * negative infinity (Floor).73 */74void isl_imath_fdiv_q_ui(mp_int rop, mp_int lhs, unsigned long rhs)75{76 mpz_t temp;77 mp_int_init(&temp);78 79 mp_int_set_uvalue(&temp, rhs);80 impz_fdiv_q(rop, lhs, &temp);81 82 mp_int_clear(&temp);83}84