1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/***********************************************************************/
/* */
/* Objective Caml */
/* */
/* 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: array.c 8995 2008-09-08 09:43:28Z frisch $ */
/* Operations on arrays */
#include "alloc.h"
#include "fail.h"
#include "memory.h"
#include "misc.h"
#include "mlvalues.h"
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);
}
}
}
|
