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re PR fortran/54613 ([F08] Add FINDLOC plus support MAXLOC/MINLOC with KIND=/BACK=)
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1/* Implementation of the MINLOC intrinsic
2 Copyright (C) 2002-2018 Free Software Foundation, Inc.
3 Contributed by Paul Brook <paul@nowt.org>
4
5This file is part of the GNU Fortran 95 runtime library (libgfortran).
6
7Libgfortran is free software; you can redistribute it and/or
8modify it under the terms of the GNU General Public
9License as published by the Free Software Foundation; either
10version 3 of the License, or (at your option) any later version.
11
12Libgfortran is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24<http://www.gnu.org/licenses/>. */
25
26#include "libgfortran.h"
27#include <assert.h>
28
29
30#if defined (HAVE_GFC_INTEGER_16) && defined (HAVE_GFC_INTEGER_16)
31
32
33extern void minloc0_16_i16 (gfc_array_i16 * const restrict retarray,
34 gfc_array_i16 * const restrict array, GFC_LOGICAL_4);
35export_proto(minloc0_16_i16);
36
37void
38minloc0_16_i16 (gfc_array_i16 * const restrict retarray,
39 gfc_array_i16 * const restrict array, GFC_LOGICAL_4 back)
40{
41 index_type count[GFC_MAX_DIMENSIONS];
42 index_type extent[GFC_MAX_DIMENSIONS];
43 index_type sstride[GFC_MAX_DIMENSIONS];
44 index_type dstride;
45 const GFC_INTEGER_16 *base;
46 GFC_INTEGER_16 * restrict dest;
47 index_type rank;
48 index_type n;
49
50 assert(back == 0);
51 rank = GFC_DESCRIPTOR_RANK (array);
52 if (rank <= 0)
53 runtime_error ("Rank of array needs to be > 0");
54
55 if (retarray->base_addr == NULL)
56 {
57 GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
58 GFC_DTYPE_COPY_SETRANK(retarray,retarray,1);
59 retarray->offset = 0;
60 retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_16));
61 }
62 else
63 {
64 if (unlikely (compile_options.bounds_check))
65 bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
66 "MINLOC");
67 }
68
69 dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
70 dest = retarray->base_addr;
71 for (n = 0; n < rank; n++)
72 {
73 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
74 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
75 count[n] = 0;
76 if (extent[n] <= 0)
77 {
78 /* Set the return value. */
79 for (n = 0; n < rank; n++)
80 dest[n * dstride] = 0;
81 return;
82 }
83 }
84
85 base = array->base_addr;
86
87 /* Initialize the return value. */
88 for (n = 0; n < rank; n++)
89 dest[n * dstride] = 1;
90 {
91
92 GFC_INTEGER_16 minval;
93#if defined(GFC_INTEGER_16_QUIET_NAN)
94 int fast = 0;
95#endif
96
97#if defined(GFC_INTEGER_16_INFINITY)
98 minval = GFC_INTEGER_16_INFINITY;
99#else
100 minval = GFC_INTEGER_16_HUGE;
101#endif
102 while (base)
103 {
104 do
105 {
106 /* Implementation start. */
107
108#if defined(GFC_INTEGER_16_QUIET_NAN)
109 }
110 while (0);
111 if (unlikely (!fast))
112 {
113 do
114 {
115 if (*base <= minval)
116 {
117 fast = 1;
118 minval = *base;
119 for (n = 0; n < rank; n++)
120 dest[n * dstride] = count[n] + 1;
121 break;
122 }
123 base += sstride[0];
124 }
125 while (++count[0] != extent[0]);
126 if (likely (fast))
127 continue;
128 }
129 else do
130 {
131#endif
132 if (*base < minval)
133 {
134 minval = *base;
135 for (n = 0; n < rank; n++)
136 dest[n * dstride] = count[n] + 1;
137 }
138 /* Implementation end. */
139 /* Advance to the next element. */
140 base += sstride[0];
141 }
142 while (++count[0] != extent[0]);
143 n = 0;
144 do
145 {
146 /* When we get to the end of a dimension, reset it and increment
147 the next dimension. */
148 count[n] = 0;
149 /* We could precalculate these products, but this is a less
150 frequently used path so probably not worth it. */
151 base -= sstride[n] * extent[n];
152 n++;
153 if (n >= rank)
154 {
155 /* Break out of the loop. */
156 base = NULL;
157 break;
158 }
159 else
160 {
161 count[n]++;
162 base += sstride[n];
163 }
164 }
165 while (count[n] == extent[n]);
166 }
167 }
168}
169
170
171extern void mminloc0_16_i16 (gfc_array_i16 * const restrict,
172 gfc_array_i16 * const restrict, gfc_array_l1 * const restrict,
173 GFC_LOGICAL_4);
174export_proto(mminloc0_16_i16);
175
176void
177mminloc0_16_i16 (gfc_array_i16 * const restrict retarray,
178 gfc_array_i16 * const restrict array,
179 gfc_array_l1 * const restrict mask, GFC_LOGICAL_4 back)
180{
181 index_type count[GFC_MAX_DIMENSIONS];
182 index_type extent[GFC_MAX_DIMENSIONS];
183 index_type sstride[GFC_MAX_DIMENSIONS];
184 index_type mstride[GFC_MAX_DIMENSIONS];
185 index_type dstride;
186 GFC_INTEGER_16 *dest;
187 const GFC_INTEGER_16 *base;
188 GFC_LOGICAL_1 *mbase;
189 int rank;
190 index_type n;
191 int mask_kind;
192
193 assert(back == 0);
194 rank = GFC_DESCRIPTOR_RANK (array);
195 if (rank <= 0)
196 runtime_error ("Rank of array needs to be > 0");
197
198 if (retarray->base_addr == NULL)
199 {
200 GFC_DIMENSION_SET(retarray->dim[0], 0, rank - 1, 1);
201 GFC_DTYPE_COPY_SETRANK(retarray,retarray,1);
202 retarray->offset = 0;
203 retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_16));
204 }
205 else
206 {
207 if (unlikely (compile_options.bounds_check))
208 {
209
210 bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
211 "MINLOC");
212 bounds_equal_extents ((array_t *) mask, (array_t *) array,
213 "MASK argument", "MINLOC");
214 }
215 }
216
217 mask_kind = GFC_DESCRIPTOR_SIZE (mask);
218
219 mbase = mask->base_addr;
220
221 if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
222#ifdef HAVE_GFC_LOGICAL_16
223 || mask_kind == 16
224#endif
225 )
226 mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
227 else
228 runtime_error ("Funny sized logical array");
229
230 dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
231 dest = retarray->base_addr;
232 for (n = 0; n < rank; n++)
233 {
234 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
235 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
236 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
237 count[n] = 0;
238 if (extent[n] <= 0)
239 {
240 /* Set the return value. */
241 for (n = 0; n < rank; n++)
242 dest[n * dstride] = 0;
243 return;
244 }
245 }
246
247 base = array->base_addr;
248
249 /* Initialize the return value. */
250 for (n = 0; n < rank; n++)
251 dest[n * dstride] = 0;
252 {
253
254 GFC_INTEGER_16 minval;
255 int fast = 0;
256
257#if defined(GFC_INTEGER_16_INFINITY)
258 minval = GFC_INTEGER_16_INFINITY;
259#else
260 minval = GFC_INTEGER_16_HUGE;
261#endif
262 while (base)
263 {
264 do
265 {
266 /* Implementation start. */
267
268 }
269 while (0);
270 if (unlikely (!fast))
271 {
272 do
273 {
274 if (*mbase)
275 {
276#if defined(GFC_INTEGER_16_QUIET_NAN)
277 if (unlikely (dest[0] == 0))
278 for (n = 0; n < rank; n++)
279 dest[n * dstride] = count[n] + 1;
280 if (*base <= minval)
281#endif
282 {
283 fast = 1;
284 minval = *base;
285 for (n = 0; n < rank; n++)
286 dest[n * dstride] = count[n] + 1;
287 break;
288 }
289 }
290 base += sstride[0];
291 mbase += mstride[0];
292 }
293 while (++count[0] != extent[0]);
294 if (likely (fast))
295 continue;
296 }
297 else do
298 {
299 if (*mbase && *base < minval)
300 {
301 minval = *base;
302 for (n = 0; n < rank; n++)
303 dest[n * dstride] = count[n] + 1;
304 }
305 /* Implementation end. */
306 /* Advance to the next element. */
307 base += sstride[0];
308 mbase += mstride[0];
309 }
310 while (++count[0] != extent[0]);
311 n = 0;
312 do
313 {
314 /* When we get to the end of a dimension, reset it and increment
315 the next dimension. */
316 count[n] = 0;
317 /* We could precalculate these products, but this is a less
318 frequently used path so probably not worth it. */
319 base -= sstride[n] * extent[n];
320 mbase -= mstride[n] * extent[n];
321 n++;
322 if (n >= rank)
323 {
324 /* Break out of the loop. */
325 base = NULL;
326 break;
327 }
328 else
329 {
330 count[n]++;
331 base += sstride[n];
332 mbase += mstride[n];
333 }
334 }
335 while (count[n] == extent[n]);
336 }
337 }
338}
339
340
341extern void sminloc0_16_i16 (gfc_array_i16 * const restrict,
342 gfc_array_i16 * const restrict, GFC_LOGICAL_4 *, GFC_LOGICAL_4);
343export_proto(sminloc0_16_i16);
344
345void
346sminloc0_16_i16 (gfc_array_i16 * const restrict retarray,
347 gfc_array_i16 * const restrict array,
348 GFC_LOGICAL_4 * mask, GFC_LOGICAL_4 back)
349{
350 index_type rank;
351 index_type dstride;
352 index_type n;
353 GFC_INTEGER_16 *dest;
354
355 if (*mask)
356 {
357 minloc0_16_i16 (retarray, array, back);
358 return;
359 }
360
361 rank = GFC_DESCRIPTOR_RANK (array);
362
363 if (rank <= 0)
364 runtime_error ("Rank of array needs to be > 0");
365
366 if (retarray->base_addr == NULL)
367 {
368 GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
369 GFC_DTYPE_COPY_SETRANK(retarray,retarray,1);
370 retarray->offset = 0;
371 retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_16));
372 }
373 else if (unlikely (compile_options.bounds_check))
374 {
375 bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
376 "MINLOC");
377 }
378
379 dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
380 dest = retarray->base_addr;
381 for (n = 0; n<rank; n++)
382 dest[n * dstride] = 0 ;
383}
384#endif
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