56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
#include <isl_int.h>
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uint32_t isl_imath_hash(mp_int v, uint32_t hash)
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{
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unsigned const char *data = (unsigned char *)v->digits;
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unsigned const char *end = data + v->used * sizeof(v->digits[0]);
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if (v->sign == 1)
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isl_hash_byte(hash, 0xFF);
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for (; data < end; ++data)
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isl_hash_byte(hash, *data);
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return hash;
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}
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/* Try a standard conversion that fits into a long.
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*/
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int isl_imath_fits_slong_p(mp_int op)
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{
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long out;
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mp_result res = mp_int_to_int(op, &out);
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return res == MP_OK;
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}
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/* Try a standard conversion that fits into an unsigned long.
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*/
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int isl_imath_fits_ulong_p(mp_int op)
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{
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unsigned long out;
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mp_result res = mp_int_to_uint(op, &out);
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return res == MP_OK;
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}
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void isl_imath_addmul_ui(mp_int rop, mp_int op1, unsigned long op2)
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{
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mpz_t temp;
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mp_int_init(&temp);
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mp_int_set_uvalue(&temp, op2);
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mp_int_mul(op1, &temp, &temp);
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mp_int_add(rop, &temp, rop);
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mp_int_clear(&temp);
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}
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void isl_imath_submul_ui(mp_int rop, mp_int op1, unsigned long op2)
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{
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mpz_t temp;
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mp_int_init(&temp);
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mp_int_set_uvalue(&temp, op2);
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mp_int_mul(op1, &temp, &temp);
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mp_int_sub(rop, &temp, rop);
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mp_int_clear(&temp);
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}
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