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yap-6.3/C/gmp_support.c

338 lines
6.1 KiB
C

/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: gmp_support.c *
* Last rev: *
* mods: *
* comments: bignum code *
* *
*************************************************************************/
#include "Yap.h"
#include "Yatom.h"
#include "Heap.h"
#include "eval.h"
#if USE_GMP
static inline Term
MkBigAndClose(MP_INT *new)
{
Term t = Yap_MkBigIntTerm(new);
mpz_clear(new);
if (t == TermNil) {
return Yap_ArithError(RESOURCE_ERROR_STACK, t, ">>/2");
}
return t;
}
/* add i + j using temporary bigint new */
Term
Yap_gmp_add_ints(Int i, Int j)
{
MP_INT new;
mpz_init_set_si(&new,i);
if (j > 0) {
mpz_add_ui(&new, &new, j);
} else {
if (j-1 > 0) { /* negative overflow */
mpz_sub_ui(&new, &new, -(j+1));
mpz_sub_ui(&new, &new, 1);
} else {
mpz_sub_ui(&new, &new, -j);
}
}
return MkBigAndClose(&new);
}
Term
Yap_gmp_sub_ints(Int i, Int j)
{
MP_INT new;
Term t;
mpz_init_set_si(&new,i);
if (j > 0) {
mpz_sub_ui(&new, &new, j);
} else {
if (j-1 > 0) { /* negative overflow */
mpz_add_ui(&new, &new, -(j+1));
mpz_add_ui(&new, &new, 1);
} else {
mpz_add_ui(&new, &new, -j);
}
}
return MkBigAndClose(&new);
t = Yap_MkBigIntTerm(&new);
mpz_clear(&new);
return t;
}
Term
Yap_gmp_mul_ints(Int i, Int j)
{
MP_INT new;
mpz_init_set_si(&new,i);
mpz_mul_si(&new, &new, j);
return MkBigAndClose(&new);
}
Term
Yap_gmp_sll_ints(Int i, Int j)
{
MP_INT new;
mpz_init_set_si(&new,i);
mpz_mul_2exp(&new, &new, j);
return MkBigAndClose(&new);
}
/* add i + b using temporary bigint new */
Term
Yap_gmp_add_int_big(Int i, MP_INT *b)
{
MP_INT new;
mpz_init_set_si(&new, i);
mpz_add(&new, &new, b);
return MkBigAndClose(&new);
}
/* sub i - b using temporary bigint new */
Term
Yap_gmp_sub_int_big(Int i, MP_INT *b)
{
MP_INT new;
mpz_init_set_si(&new, i);
mpz_sub(&new, &new, b);
return MkBigAndClose(&new);
}
/* add i + b using temporary bigint new */
Term
Yap_gmp_mul_int_big(Int i, MP_INT *b)
{
MP_INT new;
mpz_init_set_si(&new, i);
mpz_mul(&new, &new, b);
return MkBigAndClose(&new);
}
/* sub i - b using temporary bigint new */
Term
Yap_gmp_sub_big_int(MP_INT *b, Int i)
{
MP_INT new;
mpz_init_set_si(&new, i);
mpz_neg(&new, &new);
mpz_add(&new, &new, b);
return MkBigAndClose(&new);
}
/* div i / b using temporary bigint new */
Term
Yap_gmp_div_big_int(MP_INT *b, Int i)
{
MP_INT new;
mpz_init_set(&new, b);
if (yap_flags[INTEGER_ROUNDING_FLAG] == 0) {
if (i > 0) {
mpz_tdiv_q_ui(&new, &new, i);
} else if (i == 0) {
return Yap_ArithError(EVALUATION_ERROR_ZERO_DIVISOR, MkIntTerm(0), "// /2");
} else {
/* we do not handle MIN_INT */
mpz_tdiv_q_ui(&new, &new, -i);
mpz_neg(&new, &new);
}
} else {
if (i > 0) {
mpz_fdiv_q_ui(&new, &new, i);
} else if (i == 0) {
return Yap_ArithError(EVALUATION_ERROR_ZERO_DIVISOR, MkIntTerm(0), "// /2");
} else {
/* we do not handle MIN_INT */
mpz_fdiv_q_ui(&new, &new, -i);
mpz_neg(&new, &new);
}
}
return MkBigAndClose(&new);
}
/* sub i - b using temporary bigint new */
Term
Yap_gmp_and_int_big(Int i, MP_INT *b)
{
MP_INT new;
mpz_init_set_si(&new, i);
mpz_and(&new, &new, b);
return MkBigAndClose(&new);
}
/* sub i - b using temporary bigint new */
Term
Yap_gmp_ior_int_big(Int i, MP_INT *b)
{
MP_INT new;
mpz_init_set_si(&new, i);
mpz_ior(&new, &new, b);
return MkBigAndClose(&new);
}
/* add i + b using temporary bigint new */
Term
Yap_gmp_sll_big_int(MP_INT *b, Int i)
{
MP_INT new;
if (i > 0) {
mpz_init_set(&new, b);
mpz_mul_2exp(&new, &new, i);
} else if (i == 0) {
mpz_init_set(&new, b);
} else {
mpz_init_set(&new, b);
if (i == Int_MIN) {
return Yap_ArithError(RESOURCE_ERROR_HUGE_INT, MkIntegerTerm(i), "<</2");
}
mpz_tdiv_q_2exp(&new, &new, -i);
}
return MkBigAndClose(&new);
}
Term
Yap_gmp_add_big_big(MP_INT *b1, MP_INT *b2)
{
MP_INT new;
mpz_init_set(&new, b1);
mpz_add(&new, &new, b2);
return MkBigAndClose(&new);
}
Term
Yap_gmp_sub_big_big(MP_INT *b1, MP_INT *b2)
{
MP_INT new;
mpz_init_set(&new, b1);
mpz_sub(&new, &new, b2);
return MkBigAndClose(&new);
}
Term
Yap_gmp_mul_big_big(MP_INT *b1, MP_INT *b2)
{
MP_INT new;
mpz_init_set(&new, b1);
mpz_mul(&new, &new, b2);
return MkBigAndClose(&new);
}
/* div i / b using temporary bigint new */
Term
Yap_gmp_div_big_big(MP_INT *b1, MP_INT *b2)
{
MP_INT new;
mpz_init_set(&new, b1);
if (yap_flags[INTEGER_ROUNDING_FLAG] == 0) {
mpz_tdiv_q(&new, &new, b2);
} else {
mpz_fdiv_q(&new, &new, b2);
}
return MkBigAndClose(&new);
}
Term
Yap_gmp_and_big_big(MP_INT *b1, MP_INT *b2)
{
MP_INT new;
mpz_init_set(&new, b1);
mpz_and(&new, &new, b2);
return MkBigAndClose(&new);
}
Term
Yap_gmp_ior_big_big(MP_INT *b1, MP_INT *b2)
{
MP_INT new;
mpz_init_set(&new, b1);
mpz_ior(&new, &new, b2);
return MkBigAndClose(&new);
}
Term
Yap_gmp_add_float_big(Float d, MP_INT *b)
{
return MkFloatTerm(d+mpz_get_d(b));
}
Term
Yap_gmp_sub_float_big(Float d, MP_INT *b)
{
return MkFloatTerm(d-mpz_get_d(b));
}
Term
Yap_gmp_sub_big_float(MP_INT *b, Float d)
{
return MkFloatTerm(mpz_get_d(b)-d);
}
Term
Yap_gmp_mul_float_big(Float d, MP_INT *b)
{
return MkFloatTerm(d*mpz_get_d(b));
}
Term
Yap_gmp_exp_ints(Int i1, Int i2)
{
MP_INT new;
mpz_init_set_si(&new, i1);
mpz_pow_ui (&new, &new, (unsigned long int)i2);
return MkBigAndClose(&new);
}
Term
Yap_gmp_exp_big_int(MP_INT *b, Int i)
{
MP_INT new;
if (b > 0) {
mpz_init(&new);
mpz_pow_ui (&new, b, (unsigned long int)i);
} else {
MP_INT new;
if (b==0) return MkIntTerm(1);
mpz_init_set_si(&new, i);
mpz_powm (&new, b, &new, b);
}
return MkBigAndClose(&new);
}
#endif