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/***********************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
/* Operations on arrays */
#include "alloc.h"
#include "fail.h"
#include "memory.h"
#include "misc.h"
#include "mlvalues.h"
CAMLexport mlsize_t caml_array_length(value array){
tag_t tag = Tag_val(array);
if (tag == Double_array_tag)
return Wosize_val(array) / Double_wosize;
else return Wosize_val(array);
}
CAMLexport int caml_is_double_array(value array){
return (Tag_val(array) == Double_array_tag);
}
CAMLprim value caml_array_get_addr(value array, value index)
{
intnat idx = Long_val(index);
if (idx < 0 || idx >= Wosize_val(array)) caml_array_bound_error();
return Field(array, idx);
}
CAMLprim value caml_array_get_float(value array, value index)
{
intnat idx = Long_val(index);
double d;
value res;
if (idx < 0 || idx >= Wosize_val(array) / Double_wosize)
caml_array_bound_error();
d = Double_field(array, idx);
#define Setup_for_gc
#define Restore_after_gc
Alloc_small(res, Double_wosize, Double_tag);
#undef Setup_for_gc
#undef Restore_after_gc
Store_double_val(res, d);
return res;
}
CAMLprim value caml_array_get(value array, value index)
{
if (Tag_val(array) == Double_array_tag)
return caml_array_get_float(array, index);
else
return caml_array_get_addr(array, index);
}
CAMLprim value caml_array_set_addr(value array, value index, value newval)
{
intnat idx = Long_val(index);
if (idx < 0 || idx >= Wosize_val(array)) caml_array_bound_error();
Modify(&Field(array, idx), newval);
return Val_unit;
}
CAMLprim value caml_array_set_float(value array, value index, value newval)
{
intnat idx = Long_val(index);
if (idx < 0 || idx >= Wosize_val(array) / Double_wosize)
caml_array_bound_error();
Store_double_field(array, idx, Double_val(newval));
return Val_unit;
}
CAMLprim value caml_array_set(value array, value index, value newval)
{
if (Tag_val(array) == Double_array_tag)
return caml_array_set_float(array, index, newval);
else
return caml_array_set_addr(array, index, newval);
}
CAMLprim value caml_array_unsafe_get_float(value array, value index)
{
double d;
value res;
d = Double_field(array, Long_val(index));
#define Setup_for_gc
#define Restore_after_gc
Alloc_small(res, Double_wosize, Double_tag);
#undef Setup_for_gc
#undef Restore_after_gc
Store_double_val(res, d);
return res;
}
CAMLprim value caml_array_unsafe_get(value array, value index)
{
if (Tag_val(array) == Double_array_tag)
return caml_array_unsafe_get_float(array, index);
else
return Field(array, Long_val(index));
}
CAMLprim value caml_array_unsafe_set_addr(value array, value index,value newval)
{
intnat idx = Long_val(index);
Modify(&Field(array, idx), newval);
return Val_unit;
}
CAMLprim value caml_array_unsafe_set_float(value array,value index,value newval)
{
Store_double_field(array, Long_val(index), Double_val(newval));
return Val_unit;
}
CAMLprim value caml_array_unsafe_set(value array, value index, value newval)
{
if (Tag_val(array) == Double_array_tag)
return caml_array_unsafe_set_float(array, index, newval);
else
return caml_array_unsafe_set_addr(array, index, newval);
}
CAMLprim value caml_make_vect(value len, value init)
{
CAMLparam2 (len, init);
CAMLlocal1 (res);
mlsize_t size, wsize, i;
double d;
size = Long_val(len);
if (size == 0) {
res = Atom(0);
}
else if (Is_block(init)
&& Is_in_value_area(init)
&& Tag_val(init) == Double_tag) {
d = Double_val(init);
wsize = size * Double_wosize;
if (wsize > Max_wosize) caml_invalid_argument("Array.make");
res = caml_alloc(wsize, Double_array_tag);
for (i = 0; i < size; i++) {
Store_double_field(res, i, d);
}
} else {
if (size > Max_wosize) caml_invalid_argument("Array.make");
if (size < Max_young_wosize) {
res = caml_alloc_small(size, 0);
for (i = 0; i < size; i++) Field(res, i) = init;
}
else if (Is_block(init) && Is_young(init)) {
caml_minor_collection();
res = caml_alloc_shr(size, 0);
for (i = 0; i < size; i++) Field(res, i) = init;
res = caml_check_urgent_gc (res);
}
else {
res = caml_alloc_shr(size, 0);
for (i = 0; i < size; i++) caml_initialize(&Field(res, i), init);
res = caml_check_urgent_gc (res);
}
}
CAMLreturn (res);
}
CAMLprim value caml_make_array(value init)
{
CAMLparam1 (init);
mlsize_t wsize, size, i;
CAMLlocal2 (v, res);
size = Wosize_val(init);
if (size == 0) {
CAMLreturn (init);
} else {
v = Field(init, 0);
if (Is_long(v)
|| ! Is_in_value_area(v)
|| Tag_val(v) != Double_tag) {
CAMLreturn (init);
} else {
Assert(size < Max_young_wosize);
wsize = size * Double_wosize;
res = caml_alloc_small(wsize, Double_array_tag);
for (i = 0; i < size; i++) {
Store_double_field(res, i, Double_val(Field(init, i)));
}
CAMLreturn (res);
}
}
}
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