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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
/* Special implementation of the SPREAD intrinsic
Copyright 2008, 2009 Free Software Foundation, Inc.
Contributed by Thomas Koenig <tkoenig@gcc.gnu.org>, based on
spread_generic.c written by Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran 95 runtime library (libgfortran).
Libgfortran is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
Ligbfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "libgfortran.h"
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#if defined (HAVE_GFC_INTEGER_16)
void
spread_i16 (gfc_array_i16 *ret, const gfc_array_i16 *source,
const index_type along, const index_type pncopies)
{
/* r.* indicates the return array. */
index_type rstride[GFC_MAX_DIMENSIONS];
index_type rstride0;
index_type rdelta = 0;
index_type rrank;
index_type rs;
GFC_INTEGER_16 *rptr;
GFC_INTEGER_16 * restrict dest;
/* s.* indicates the source array. */
index_type sstride[GFC_MAX_DIMENSIONS];
index_type sstride0;
index_type srank;
const GFC_INTEGER_16 *sptr;
index_type count[GFC_MAX_DIMENSIONS];
index_type extent[GFC_MAX_DIMENSIONS];
index_type n;
index_type dim;
index_type ncopies;
srank = GFC_DESCRIPTOR_RANK(source);
rrank = srank + 1;
if (rrank > GFC_MAX_DIMENSIONS)
runtime_error ("return rank too large in spread()");
if (along > rrank)
runtime_error ("dim outside of rank in spread()");
ncopies = pncopies;
if (ret->data == NULL)
{
size_t ub, stride;
/* The front end has signalled that we need to populate the
return array descriptor. */
ret->dtype = (source->dtype & ~GFC_DTYPE_RANK_MASK) | rrank;
dim = 0;
rs = 1;
for (n = 0; n < rrank; n++)
{
stride = rs;
if (n == along - 1)
{
ub = ncopies - 1;
rdelta = rs;
rs *= ncopies;
}
else
{
count[dim] = 0;
extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
sstride[dim] = GFC_DESCRIPTOR_STRIDE(source,dim);
rstride[dim] = rs;
ub = extent[dim] - 1;
rs *= extent[dim];
dim++;
}
GFC_DIMENSION_SET(ret->dim[n], 0, ub, stride);
}
ret->offset = 0;
if (rs > 0)
ret->data = internal_malloc_size (rs * sizeof(GFC_INTEGER_16));
else
{
ret->data = internal_malloc_size (1);
return;
}
}
else
{
int zero_sized;
zero_sized = 0;
dim = 0;
if (GFC_DESCRIPTOR_RANK(ret) != rrank)
runtime_error ("rank mismatch in spread()");
if (unlikely (compile_options.bounds_check))
{
for (n = 0; n < rrank; n++)
{
index_type ret_extent;
ret_extent = GFC_DESCRIPTOR_EXTENT(ret,n);
if (n == along - 1)
{
rdelta = GFC_DESCRIPTOR_STRIDE(ret,n);
if (ret_extent != ncopies)
runtime_error("Incorrect extent in return value of SPREAD"
" intrinsic in dimension %ld: is %ld,"
" should be %ld", (long int) n+1,
(long int) ret_extent, (long int) ncopies);
}
else
{
count[dim] = 0;
extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
if (ret_extent != extent[dim])
runtime_error("Incorrect extent in return value of SPREAD"
" intrinsic in dimension %ld: is %ld,"
" should be %ld", (long int) n+1,
(long int) ret_extent,
(long int) extent[dim]);
if (extent[dim] <= 0)
zero_sized = 1;
sstride[dim] = GFC_DESCRIPTOR_STRIDE(source,dim);
rstride[dim] = GFC_DESCRIPTOR_STRIDE(ret,n);
dim++;
}
}
}
else
{
for (n = 0; n < rrank; n++)
{
if (n == along - 1)
{
rdelta = GFC_DESCRIPTOR_STRIDE(ret,n);
}
else
{
count[dim] = 0;
extent[dim] = GFC_DESCRIPTOR_EXTENT(source,dim);
if (extent[dim] <= 0)
zero_sized = 1;
sstride[dim] = GFC_DESCRIPTOR_STRIDE(source,dim);
rstride[dim] = GFC_DESCRIPTOR_STRIDE(ret,n);
dim++;
}
}
}
if (zero_sized)
return;
if (sstride[0] == 0)
sstride[0] = 1;
}
sstride0 = sstride[0];
rstride0 = rstride[0];
rptr = ret->data;
sptr = source->data;
while (sptr)
{
/* Spread this element. */
dest = rptr;
for (n = 0; n < ncopies; n++)
{
*dest = *sptr;
dest += rdelta;
}
/* Advance to the next element. */
sptr += sstride0;
rptr += rstride0;
count[0]++;
n = 0;
while (count[n] == extent[n])
{
/* When we get to the end of a dimension, reset it and increment
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
frequently used path so probably not worth it. */
sptr -= sstride[n] * extent[n];
rptr -= rstride[n] * extent[n];
n++;
if (n >= srank)
{
/* Break out of the loop. */
sptr = NULL;
break;
}
else
{
count[n]++;
sptr += sstride[n];
rptr += rstride[n];
}
}
}
}
/* This version of spread_internal treats the special case of a scalar
source. This is much simpler than the more general case above. */
void
spread_scalar_i16 (gfc_array_i16 *ret, const GFC_INTEGER_16 *source,
const index_type along, const index_type pncopies)
{
int n;
int ncopies = pncopies;
GFC_INTEGER_16 * restrict dest;
index_type stride;
if (GFC_DESCRIPTOR_RANK (ret) != 1)
runtime_error ("incorrect destination rank in spread()");
if (along > 1)
runtime_error ("dim outside of rank in spread()");
if (ret->data == NULL)
{
ret->data = internal_malloc_size (ncopies * sizeof (GFC_INTEGER_16));
ret->offset = 0;
GFC_DIMENSION_SET(ret->dim[0], 0, ncopies - 1, 1);
}
else
{
if (ncopies - 1 > (GFC_DESCRIPTOR_EXTENT(ret,0) - 1)
/ GFC_DESCRIPTOR_STRIDE(ret,0))
runtime_error ("dim too large in spread()");
}
dest = ret->data;
stride = GFC_DESCRIPTOR_STRIDE(ret,0);
for (n = 0; n < ncopies; n++)
{
*dest = *source;
dest += stride;
}
}
#endif
|
