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#include <caml/mlvalues.h>
#include <caml/custom.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/fail.h>
#include <caml/callback.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "config.h"
#include "conversions.c"
#define MODULE "Gmp.Q."
#define CAMLcheckreturn(r) \
assert(r > 0x10000); \
CAMLreturn(r)
/*** Allocation functions */
void _mlgmp_q_finalize(value r)
{
mpq_clear(*mpq_val(r));
}
int _mlgmp_q_custom_compare(value a, value b);
void _mlgmp_q_serialize(value v,
unsigned long * wsize_32,
unsigned long * wsize_64);
unsigned long _mlgmp_q_deserialize(void * dst);
int _mlgmp_q_custom_compare(value a, value b);
long _mlgmp_q_hash(value v);
struct custom_operations _mlgmp_custom_q =
{
field(identifier) "Gmp.Q.t",
field(finalize) &_mlgmp_q_finalize,
field(compare) &_mlgmp_q_custom_compare,
field(hash) &_mlgmp_q_hash,
#ifdef SERIALIZE
field(serialize) &_mlgmp_q_serialize,
field(deserialize) &_mlgmp_q_deserialize
#else
field(serialize) custom_serialize_default,
field(deserialize) custom_deserialize_default
#endif
};
value _mlgmp_q_create(void)
{
CAMLparam0();
trace(create);
CAMLcheckreturn(alloc_init_mpq());
}
value _mlgmp_q_from_z(value a)
{
CAMLparam1(a);
CAMLlocal1(r);
trace(from_z);
r=alloc_init_mpq();
mpq_set_z(*mpq_val(r), *mpz_val(a));
CAMLcheckreturn(r);
}
value _mlgmp_q_from_si(value n, value d)
{
CAMLparam2(n, d);
CAMLlocal1(r);
trace(from_si);
r=alloc_init_mpq();
mpq_set_si(*mpq_val(r), Int_val(n), Int_val(d));
mpq_canonicalize(*mpq_val(r));
CAMLcheckreturn(r);
}
/*** Conversions */
value _mlgmp_q_from_float(value v)
{
CAMLparam1(v);
CAMLlocal1(r);
trace(from_float);
r=alloc_init_mpq();
mpq_set_d(*mpq_val(r), Double_val(v));
CAMLcheckreturn(r);
}
value _mlgmp_q_to_float(value v)
{
CAMLparam1(v);
CAMLlocal1(r);
trace(to_float);
r = copy_double(mpq_get_d(*mpq_val(v)));
CAMLreturn(r);
}
/*** Operations */
/**** Arithmetic */
#define q_binary_op(op) \
value _mlgmp_q_##op(value a, value b) \
{ \
CAMLparam2(a, b); \
CAMLlocal1(r); \
trace(op); \
r=alloc_init_mpq(); \
mpq_##op(*mpq_val(r), *mpq_val(a), *mpq_val(b)); \
CAMLcheckreturn(r); \
}
#define q_unary_op(op) \
value _mlgmp_q_##op(value a) \
{ \
CAMLparam1(a); \
CAMLlocal1(r); \
trace(op); \
r=alloc_init_mpq(); \
mpq_##op(*mpq_val(r), *mpq_val(a)); \
CAMLcheckreturn(r); \
}
q_binary_op(add)
q_binary_op(sub)
q_binary_op(mul)
q_binary_op(div)
q_unary_op(neg)
q_unary_op(inv)
#define q_z_unary_op(op) \
value _mlgmp_q_##op(value a) \
{ \
CAMLparam1(a); \
CAMLlocal1(r); \
trace(op); \
r=alloc_init_mpz(); \
mpq_##op(*mpz_val(r), *mpq_val(a)); \
CAMLcheckreturn(r); \
}
q_z_unary_op(get_num)
q_z_unary_op(get_den)
/*** Compare */
int _mlgmp_q_custom_compare(value a, value b)
{
CAMLparam2(a, b);
CAMLreturn(mpq_cmp(*mpq_val(a), *mpq_val(b)));
}
value _mlgmp_q_cmp(value a, value b)
{
CAMLparam2(a, b);
trace(cmp); \
CAMLreturn(Val_int(mpq_cmp(*mpq_val(a), *mpq_val(b))));
}
value _mlgmp_q_cmp_ui(value a, value n, value d)
{
CAMLparam3(a, n, d);
trace(cmp_ui); \
CAMLreturn(Val_int(mpq_cmp_ui(*mpq_val(a), Int_val(n), Int_val(d))));
}
value _mlgmp_q_sgn(value a)
{
CAMLparam1(a);
trace(sgn); \
CAMLreturn(Val_int(mpq_sgn(*mpq_val(a))));
}
/*** Serialization */
value _mlgmp_q_initialize()
{
CAMLparam0();
register_custom_operations(& _mlgmp_custom_q);
CAMLreturn(Val_unit);
}
#ifdef SERIALIZE
void _mlgmp_q_serialize(value v,
unsigned long * wsize_32,
unsigned long * wsize_64)
{
CAMLparam1(v);
char *s;
int len;
*wsize_32 = MPQ_SIZE_ARCH32;
*wsize_64 = MPQ_SIZE_ARCH64;
s = mpz_get_str (NULL, 16, mpq_numref(*mpq_val(v)));
len = strlen(s);
serialize_int_4(len);
serialize_block_1(s, len);
free(s);
s = mpz_get_str (NULL, 16, mpq_denref(*mpq_val(v)));
len = strlen(s);
serialize_int_4(len);
serialize_block_1(s, len);
free(s);
CAMLreturn0;
}
unsigned long _mlgmp_q_deserialize(void * dst)
{
char *s;
int len;
len = deserialize_uint_4();
s = malloc(len+1);
deserialize_block_1(s, len);
s[len] = 0;
mpz_init_set_str (mpq_numref(*((mpq_t*) dst)), s, 16);
free(s);
len = deserialize_uint_4();
s = malloc(len+1);
deserialize_block_1(s, len);
s[len] = 0;
mpz_init_set_str (mpq_denref(*((mpq_t*) dst)), s, 16);
free(s);
return sizeof(mpq_t);
}
#endif
long _mlgmp_q_hash(value v)
{
CAMLparam1(v);
mpz_t dummy;
long r;
mpz_init(dummy);
r = mpz_mod_ui(dummy, mpq_denref(*mpq_val(v)), HASH_MODULUS)
^ mpz_mod_ui(dummy, mpq_numref(*mpq_val(v)), HASH_MODULUS);
mpz_clear(dummy);
CAMLreturn(r);
}
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