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1 | /* Implementation of the MINLOC intrinsic | |
2 | Copyright (C) 2002-2020 Free Software Foundation, Inc. | |
3 | Contributed by Paul Brook <paul@nowt.org> | |
4 | ||
5 | This file is part of the GNU Fortran 95 runtime library (libgfortran). | |
6 | ||
7 | Libgfortran is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU General Public | |
9 | License as published by the Free Software Foundation; either | |
10 | version 3 of the License, or (at your option) any later version. | |
11 | ||
12 | Libgfortran is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | Under Section 7 of GPL version 3, you are granted additional | |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see 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_2) && defined (HAVE_GFC_INTEGER_16) | |
31 | ||
32 | ||
33 | extern void minloc0_16_i2 (gfc_array_i16 * const restrict retarray, | |
34 | gfc_array_i2 * const restrict array, GFC_LOGICAL_4); | |
35 | export_proto(minloc0_16_i2); | |
36 | ||
37 | void | |
38 | minloc0_16_i2 (gfc_array_i16 * const restrict retarray, | |
39 | gfc_array_i2 * 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_2 *base; | |
46 | GFC_INTEGER_16 * restrict dest; | |
47 | index_type rank; | |
48 | index_type n; | |
49 | ||
50 | rank = GFC_DESCRIPTOR_RANK (array); | |
51 | if (rank <= 0) | |
52 | runtime_error ("Rank of array needs to be > 0"); | |
53 | ||
54 | if (retarray->base_addr == NULL) | |
55 | { | |
56 | GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1); | |
57 | retarray->dtype.rank = 1; | |
58 | retarray->offset = 0; | |
59 | retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_16)); | |
60 | } | |
61 | else | |
62 | { | |
63 | if (unlikely (compile_options.bounds_check)) | |
64 | bounds_iforeach_return ((array_t *) retarray, (array_t *) array, | |
65 | "MINLOC"); | |
66 | } | |
67 | ||
68 | dstride = GFC_DESCRIPTOR_STRIDE(retarray,0); | |
69 | dest = retarray->base_addr; | |
70 | for (n = 0; n < rank; n++) | |
71 | { | |
72 | sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n); | |
73 | extent[n] = GFC_DESCRIPTOR_EXTENT(array,n); | |
74 | count[n] = 0; | |
75 | if (extent[n] <= 0) | |
76 | { | |
77 | /* Set the return value. */ | |
78 | for (n = 0; n < rank; n++) | |
79 | dest[n * dstride] = 0; | |
80 | return; | |
81 | } | |
82 | } | |
83 | ||
84 | base = array->base_addr; | |
85 | ||
86 | /* Initialize the return value. */ | |
87 | for (n = 0; n < rank; n++) | |
88 | dest[n * dstride] = 1; | |
89 | { | |
90 | ||
91 | GFC_INTEGER_2 minval; | |
92 | #if defined(GFC_INTEGER_2_QUIET_NAN) | |
93 | int fast = 0; | |
94 | #endif | |
95 | ||
96 | #if defined(GFC_INTEGER_2_INFINITY) | |
97 | minval = GFC_INTEGER_2_INFINITY; | |
98 | #else | |
99 | minval = GFC_INTEGER_2_HUGE; | |
100 | #endif | |
101 | while (base) | |
102 | { | |
103 | /* Implementation start. */ | |
104 | ||
105 | #if defined(GFC_INTEGER_2_QUIET_NAN) | |
106 | if (unlikely (!fast)) | |
107 | { | |
108 | do | |
109 | { | |
110 | if (*base <= minval) | |
111 | { | |
112 | fast = 1; | |
113 | minval = *base; | |
114 | for (n = 0; n < rank; n++) | |
115 | dest[n * dstride] = count[n] + 1; | |
116 | break; | |
117 | } | |
118 | base += sstride[0]; | |
119 | } | |
120 | while (++count[0] != extent[0]); | |
121 | if (likely (fast)) | |
122 | continue; | |
123 | } | |
124 | else | |
125 | #endif | |
126 | if (back) | |
127 | do | |
128 | { | |
129 | if (unlikely (*base <= minval)) | |
130 | { | |
131 | minval = *base; | |
132 | for (n = 0; n < rank; n++) | |
133 | dest[n * dstride] = count[n] + 1; | |
134 | } | |
135 | base += sstride[0]; | |
136 | } | |
137 | while (++count[0] != extent[0]); | |
138 | else | |
139 | do | |
140 | { | |
141 | if (unlikely (*base < minval)) | |
142 | { | |
143 | minval = *base; | |
144 | for (n = 0; n < rank; n++) | |
145 | dest[n * dstride] = count[n] + 1; | |
146 | } | |
147 | /* Implementation end. */ | |
148 | /* Advance to the next element. */ | |
149 | base += sstride[0]; | |
150 | } | |
151 | while (++count[0] != extent[0]); | |
152 | n = 0; | |
153 | do | |
154 | { | |
155 | /* When we get to the end of a dimension, reset it and increment | |
156 | the next dimension. */ | |
157 | count[n] = 0; | |
158 | /* We could precalculate these products, but this is a less | |
159 | frequently used path so probably not worth it. */ | |
160 | base -= sstride[n] * extent[n]; | |
161 | n++; | |
162 | if (n >= rank) | |
163 | { | |
164 | /* Break out of the loop. */ | |
165 | base = NULL; | |
166 | break; | |
167 | } | |
168 | else | |
169 | { | |
170 | count[n]++; | |
171 | base += sstride[n]; | |
172 | } | |
173 | } | |
174 | while (count[n] == extent[n]); | |
175 | } | |
176 | } | |
177 | } | |
178 | ||
179 | extern void mminloc0_16_i2 (gfc_array_i16 * const restrict, | |
180 | gfc_array_i2 * const restrict, gfc_array_l1 * const restrict, | |
181 | GFC_LOGICAL_4); | |
182 | export_proto(mminloc0_16_i2); | |
183 | ||
184 | void | |
185 | mminloc0_16_i2 (gfc_array_i16 * const restrict retarray, | |
186 | gfc_array_i2 * const restrict array, | |
187 | gfc_array_l1 * const restrict mask, GFC_LOGICAL_4 back) | |
188 | { | |
189 | index_type count[GFC_MAX_DIMENSIONS]; | |
190 | index_type extent[GFC_MAX_DIMENSIONS]; | |
191 | index_type sstride[GFC_MAX_DIMENSIONS]; | |
192 | index_type mstride[GFC_MAX_DIMENSIONS]; | |
193 | index_type dstride; | |
194 | GFC_INTEGER_16 *dest; | |
195 | const GFC_INTEGER_2 *base; | |
196 | GFC_LOGICAL_1 *mbase; | |
197 | int rank; | |
198 | index_type n; | |
199 | int mask_kind; | |
200 | ||
201 | ||
202 | if (mask == NULL) | |
203 | { | |
204 | minloc0_16_i2 (retarray, array, back); | |
205 | return; | |
206 | } | |
207 | ||
208 | rank = GFC_DESCRIPTOR_RANK (array); | |
209 | if (rank <= 0) | |
210 | runtime_error ("Rank of array needs to be > 0"); | |
211 | ||
212 | if (retarray->base_addr == NULL) | |
213 | { | |
214 | GFC_DIMENSION_SET(retarray->dim[0], 0, rank - 1, 1); | |
215 | retarray->dtype.rank = 1; | |
216 | retarray->offset = 0; | |
217 | retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_16)); | |
218 | } | |
219 | else | |
220 | { | |
221 | if (unlikely (compile_options.bounds_check)) | |
222 | { | |
223 | ||
224 | bounds_iforeach_return ((array_t *) retarray, (array_t *) array, | |
225 | "MINLOC"); | |
226 | bounds_equal_extents ((array_t *) mask, (array_t *) array, | |
227 | "MASK argument", "MINLOC"); | |
228 | } | |
229 | } | |
230 | ||
231 | mask_kind = GFC_DESCRIPTOR_SIZE (mask); | |
232 | ||
233 | mbase = mask->base_addr; | |
234 | ||
235 | if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8 | |
236 | #ifdef HAVE_GFC_LOGICAL_16 | |
237 | || mask_kind == 16 | |
238 | #endif | |
239 | ) | |
240 | mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind); | |
241 | else | |
242 | runtime_error ("Funny sized logical array"); | |
243 | ||
244 | dstride = GFC_DESCRIPTOR_STRIDE(retarray,0); | |
245 | dest = retarray->base_addr; | |
246 | for (n = 0; n < rank; n++) | |
247 | { | |
248 | sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n); | |
249 | mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n); | |
250 | extent[n] = GFC_DESCRIPTOR_EXTENT(array,n); | |
251 | count[n] = 0; | |
252 | if (extent[n] <= 0) | |
253 | { | |
254 | /* Set the return value. */ | |
255 | for (n = 0; n < rank; n++) | |
256 | dest[n * dstride] = 0; | |
257 | return; | |
258 | } | |
259 | } | |
260 | ||
261 | base = array->base_addr; | |
262 | ||
263 | /* Initialize the return value. */ | |
264 | for (n = 0; n < rank; n++) | |
265 | dest[n * dstride] = 0; | |
266 | { | |
267 | ||
268 | GFC_INTEGER_2 minval; | |
269 | int fast = 0; | |
270 | ||
271 | #if defined(GFC_INTEGER_2_INFINITY) | |
272 | minval = GFC_INTEGER_2_INFINITY; | |
273 | #else | |
274 | minval = GFC_INTEGER_2_HUGE; | |
275 | #endif | |
276 | while (base) | |
277 | { | |
278 | /* Implementation start. */ | |
279 | ||
280 | if (unlikely (!fast)) | |
281 | { | |
282 | do | |
283 | { | |
284 | if (*mbase) | |
285 | { | |
286 | #if defined(GFC_INTEGER_2_QUIET_NAN) | |
287 | if (unlikely (dest[0] == 0)) | |
288 | for (n = 0; n < rank; n++) | |
289 | dest[n * dstride] = count[n] + 1; | |
290 | if (*base <= minval) | |
291 | #endif | |
292 | { | |
293 | fast = 1; | |
294 | minval = *base; | |
295 | for (n = 0; n < rank; n++) | |
296 | dest[n * dstride] = count[n] + 1; | |
297 | break; | |
298 | } | |
299 | } | |
300 | base += sstride[0]; | |
301 | mbase += mstride[0]; | |
302 | } | |
303 | while (++count[0] != extent[0]); | |
304 | if (likely (fast)) | |
305 | continue; | |
306 | } | |
307 | else | |
308 | if (back) | |
309 | do | |
310 | { | |
311 | if (unlikely (*mbase && (*base <= minval))) | |
312 | { | |
313 | minval = *base; | |
314 | for (n = 0; n < rank; n++) | |
315 | dest[n * dstride] = count[n] + 1; | |
316 | } | |
317 | base += sstride[0]; | |
318 | } | |
319 | while (++count[0] != extent[0]); | |
320 | else | |
321 | do | |
322 | { | |
323 | if (unlikely (*mbase && (*base < minval))) | |
324 | { | |
325 | minval = *base; | |
326 | for (n = 0; n < rank; n++) | |
327 | dest[n * dstride] = count[n] + 1; | |
328 | } | |
329 | /* Implementation end. */ | |
330 | /* Advance to the next element. */ | |
331 | base += sstride[0]; | |
332 | mbase += mstride[0]; | |
333 | } | |
334 | while (++count[0] != extent[0]); | |
335 | n = 0; | |
336 | do | |
337 | { | |
338 | /* When we get to the end of a dimension, reset it and increment | |
339 | the next dimension. */ | |
340 | count[n] = 0; | |
341 | /* We could precalculate these products, but this is a less | |
342 | frequently used path so probably not worth it. */ | |
343 | base -= sstride[n] * extent[n]; | |
344 | mbase -= mstride[n] * extent[n]; | |
345 | n++; | |
346 | if (n >= rank) | |
347 | { | |
348 | /* Break out of the loop. */ | |
349 | base = NULL; | |
350 | break; | |
351 | } | |
352 | else | |
353 | { | |
354 | count[n]++; | |
355 | base += sstride[n]; | |
356 | mbase += mstride[n]; | |
357 | } | |
358 | } | |
359 | while (count[n] == extent[n]); | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
364 | extern void sminloc0_16_i2 (gfc_array_i16 * const restrict, | |
365 | gfc_array_i2 * const restrict, GFC_LOGICAL_4 *, GFC_LOGICAL_4); | |
366 | export_proto(sminloc0_16_i2); | |
367 | ||
368 | void | |
369 | sminloc0_16_i2 (gfc_array_i16 * const restrict retarray, | |
370 | gfc_array_i2 * const restrict array, | |
371 | GFC_LOGICAL_4 * mask, GFC_LOGICAL_4 back) | |
372 | { | |
373 | index_type rank; | |
374 | index_type dstride; | |
375 | index_type n; | |
376 | GFC_INTEGER_16 *dest; | |
377 | ||
378 | if (mask == NULL || *mask) | |
379 | { | |
380 | minloc0_16_i2 (retarray, array, back); | |
381 | return; | |
382 | } | |
383 | ||
384 | rank = GFC_DESCRIPTOR_RANK (array); | |
385 | ||
386 | if (rank <= 0) | |
387 | runtime_error ("Rank of array needs to be > 0"); | |
388 | ||
389 | if (retarray->base_addr == NULL) | |
390 | { | |
391 | GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1); | |
392 | retarray->dtype.rank = 1; | |
393 | retarray->offset = 0; | |
394 | retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_16)); | |
395 | } | |
396 | else if (unlikely (compile_options.bounds_check)) | |
397 | { | |
398 | bounds_iforeach_return ((array_t *) retarray, (array_t *) array, | |
399 | "MINLOC"); | |
400 | } | |
401 | ||
402 | dstride = GFC_DESCRIPTOR_STRIDE(retarray,0); | |
403 | dest = retarray->base_addr; | |
404 | for (n = 0; n<rank; n++) | |
405 | dest[n * dstride] = 0 ; | |
406 | } | |
407 | #endif |