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