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644cb69f 1/* Implementation of the MINVAL intrinsic
cbe34bb5 2 Copyright (C) 2002-2017 Free Software Foundation, Inc.
644cb69f
FXC
3 Contributed by Paul Brook <paul@nowt.org>
4
0cd0559e 5This file is part of the GNU Fortran runtime library (libgfortran).
644cb69f
FXC
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
748086b7 10version 3 of the License, or (at your option) any later version.
644cb69f
FXC
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
748086b7
JJ
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/>. */
644cb69f 25
36ae8a61 26#include "libgfortran.h"
644cb69f
FXC
27
28
29#if defined (HAVE_GFC_REAL_10) && defined (HAVE_GFC_REAL_10)
30
31
64acfd99
JB
32extern void minval_r10 (gfc_array_r10 * const restrict,
33 gfc_array_r10 * const restrict, const index_type * const restrict);
644cb69f
FXC
34export_proto(minval_r10);
35
36void
64acfd99
JB
37minval_r10 (gfc_array_r10 * const restrict retarray,
38 gfc_array_r10 * const restrict array,
39 const index_type * const restrict pdim)
644cb69f
FXC
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[GFC_MAX_DIMENSIONS];
64acfd99
JB
45 const GFC_REAL_10 * restrict base;
46 GFC_REAL_10 * restrict dest;
644cb69f
FXC
47 index_type rank;
48 index_type n;
49 index_type len;
50 index_type delta;
51 index_type dim;
da96f5ab 52 int continue_loop;
644cb69f
FXC
53
54 /* Make dim zero based to avoid confusion. */
55 dim = (*pdim) - 1;
56 rank = GFC_DESCRIPTOR_RANK (array) - 1;
57
dfb55fdc 58 len = GFC_DESCRIPTOR_EXTENT(array,dim);
da96f5ab
TK
59 if (len < 0)
60 len = 0;
dfb55fdc 61 delta = GFC_DESCRIPTOR_STRIDE(array,dim);
644cb69f
FXC
62
63 for (n = 0; n < dim; n++)
64 {
dfb55fdc
TK
65 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
66 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
80ee04b9
TK
67
68 if (extent[n] < 0)
69 extent[n] = 0;
644cb69f
FXC
70 }
71 for (n = dim; n < rank; n++)
72 {
dfb55fdc
TK
73 sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);
74 extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
80ee04b9
TK
75
76 if (extent[n] < 0)
77 extent[n] = 0;
644cb69f
FXC
78 }
79
21d1335b 80 if (retarray->base_addr == NULL)
644cb69f 81 {
dfb55fdc 82 size_t alloc_size, str;
80ee04b9 83
644cb69f 84 for (n = 0; n < rank; n++)
80927a56
JJ
85 {
86 if (n == 0)
dfb55fdc 87 str = 1;
80927a56
JJ
88 else
89 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
dfb55fdc
TK
90
91 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
92
80927a56 93 }
644cb69f 94
644cb69f
FXC
95 retarray->offset = 0;
96 retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
80ee04b9 97
92e6f3a4 98 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
80ee04b9 99
92e6f3a4 100 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_REAL_10));
80ee04b9
TK
101 if (alloc_size == 0)
102 {
103 /* Make sure we have a zero-sized array. */
dfb55fdc 104 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
80ee04b9 105 return;
dfb55fdc 106
80ee04b9 107 }
644cb69f
FXC
108 }
109 else
110 {
644cb69f 111 if (rank != GFC_DESCRIPTOR_RANK (retarray))
fd6590f8 112 runtime_error ("rank of return array incorrect in"
ccacefc7
TK
113 " MINVAL intrinsic: is %ld, should be %ld",
114 (long int) (GFC_DESCRIPTOR_RANK (retarray)),
115 (long int) rank);
fd6590f8 116
9731c4a3 117 if (unlikely (compile_options.bounds_check))
16bff921
TK
118 bounds_ifunction_return ((array_t *) retarray, extent,
119 "return value", "MINVAL");
644cb69f
FXC
120 }
121
122 for (n = 0; n < rank; n++)
123 {
124 count[n] = 0;
dfb55fdc 125 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
644cb69f 126 if (extent[n] <= 0)
facc1285 127 return;
644cb69f
FXC
128 }
129
21d1335b
TB
130 base = array->base_addr;
131 dest = retarray->base_addr;
644cb69f 132
da96f5ab
TK
133 continue_loop = 1;
134 while (continue_loop)
644cb69f 135 {
64acfd99 136 const GFC_REAL_10 * restrict src;
644cb69f
FXC
137 GFC_REAL_10 result;
138 src = base;
139 {
140
80927a56
JJ
141#if defined (GFC_REAL_10_INFINITY)
142 result = GFC_REAL_10_INFINITY;
143#else
144 result = GFC_REAL_10_HUGE;
145#endif
146 if (len <= 0)
644cb69f
FXC
147 *dest = GFC_REAL_10_HUGE;
148 else
149 {
150 for (n = 0; n < len; n++, src += delta)
151 {
152
80927a56
JJ
153#if defined (GFC_REAL_10_QUIET_NAN)
154 if (*src <= result)
155 break;
156 }
157 if (unlikely (n >= len))
158 result = GFC_REAL_10_QUIET_NAN;
159 else for (; n < len; n++, src += delta)
160 {
161#endif
162 if (*src < result)
163 result = *src;
164 }
0cd0559e 165
644cb69f
FXC
166 *dest = result;
167 }
168 }
169 /* Advance to the next element. */
170 count[0]++;
171 base += sstride[0];
172 dest += dstride[0];
173 n = 0;
174 while (count[n] == extent[n])
80927a56
JJ
175 {
176 /* When we get to the end of a dimension, reset it and increment
177 the next dimension. */
178 count[n] = 0;
179 /* We could precalculate these products, but this is a less
180 frequently used path so probably not worth it. */
181 base -= sstride[n] * extent[n];
182 dest -= dstride[n] * extent[n];
183 n++;
80dd631f 184 if (n >= rank)
80927a56 185 {
80dd631f 186 /* Break out of the loop. */
da96f5ab
TK
187 continue_loop = 0;
188 break;
80927a56
JJ
189 }
190 else
191 {
192 count[n]++;
193 base += sstride[n];
194 dest += dstride[n];
195 }
196 }
644cb69f
FXC
197 }
198}
199
200
64acfd99
JB
201extern void mminval_r10 (gfc_array_r10 * const restrict,
202 gfc_array_r10 * const restrict, const index_type * const restrict,
28dc6b33 203 gfc_array_l1 * const restrict);
644cb69f
FXC
204export_proto(mminval_r10);
205
206void
64acfd99
JB
207mminval_r10 (gfc_array_r10 * const restrict retarray,
208 gfc_array_r10 * const restrict array,
209 const index_type * const restrict pdim,
28dc6b33 210 gfc_array_l1 * const restrict mask)
644cb69f
FXC
211{
212 index_type count[GFC_MAX_DIMENSIONS];
213 index_type extent[GFC_MAX_DIMENSIONS];
214 index_type sstride[GFC_MAX_DIMENSIONS];
215 index_type dstride[GFC_MAX_DIMENSIONS];
216 index_type mstride[GFC_MAX_DIMENSIONS];
64acfd99
JB
217 GFC_REAL_10 * restrict dest;
218 const GFC_REAL_10 * restrict base;
28dc6b33 219 const GFC_LOGICAL_1 * restrict mbase;
644cb69f
FXC
220 int rank;
221 int dim;
222 index_type n;
223 index_type len;
224 index_type delta;
225 index_type mdelta;
28dc6b33 226 int mask_kind;
644cb69f
FXC
227
228 dim = (*pdim) - 1;
229 rank = GFC_DESCRIPTOR_RANK (array) - 1;
230
dfb55fdc 231 len = GFC_DESCRIPTOR_EXTENT(array,dim);
644cb69f
FXC
232 if (len <= 0)
233 return;
28dc6b33 234
21d1335b 235 mbase = mask->base_addr;
28dc6b33
TK
236
237 mask_kind = GFC_DESCRIPTOR_SIZE (mask);
238
239 if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
240#ifdef HAVE_GFC_LOGICAL_16
241 || mask_kind == 16
242#endif
243 )
244 mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
245 else
246 runtime_error ("Funny sized logical array");
247
dfb55fdc
TK
248 delta = GFC_DESCRIPTOR_STRIDE(array,dim);
249 mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
644cb69f
FXC
250
251 for (n = 0; n < dim; n++)
252 {
dfb55fdc
TK
253 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
254 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
255 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
80ee04b9
TK
256
257 if (extent[n] < 0)
258 extent[n] = 0;
259
644cb69f
FXC
260 }
261 for (n = dim; n < rank; n++)
262 {
dfb55fdc
TK
263 sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1);
264 mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
265 extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
80ee04b9
TK
266
267 if (extent[n] < 0)
268 extent[n] = 0;
644cb69f
FXC
269 }
270
21d1335b 271 if (retarray->base_addr == NULL)
644cb69f 272 {
dfb55fdc 273 size_t alloc_size, str;
80ee04b9 274
644cb69f 275 for (n = 0; n < rank; n++)
80927a56
JJ
276 {
277 if (n == 0)
278 str = 1;
279 else
280 str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
dfb55fdc
TK
281
282 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
283
80927a56 284 }
644cb69f 285
92e6f3a4 286 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
80ee04b9 287
644cb69f
FXC
288 retarray->offset = 0;
289 retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
80ee04b9
TK
290
291 if (alloc_size == 0)
292 {
293 /* Make sure we have a zero-sized array. */
dfb55fdc 294 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
80ee04b9
TK
295 return;
296 }
297 else
92e6f3a4 298 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_REAL_10));
80ee04b9 299
644cb69f
FXC
300 }
301 else
302 {
644cb69f 303 if (rank != GFC_DESCRIPTOR_RANK (retarray))
fd6590f8
TK
304 runtime_error ("rank of return array incorrect in MINVAL intrinsic");
305
9731c4a3 306 if (unlikely (compile_options.bounds_check))
fd6590f8 307 {
16bff921
TK
308 bounds_ifunction_return ((array_t *) retarray, extent,
309 "return value", "MINVAL");
310 bounds_equal_extents ((array_t *) mask, (array_t *) array,
311 "MASK argument", "MINVAL");
fd6590f8 312 }
644cb69f
FXC
313 }
314
315 for (n = 0; n < rank; n++)
316 {
317 count[n] = 0;
dfb55fdc 318 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
644cb69f 319 if (extent[n] <= 0)
80927a56 320 return;
644cb69f
FXC
321 }
322
21d1335b
TB
323 dest = retarray->base_addr;
324 base = array->base_addr;
644cb69f
FXC
325
326 while (base)
327 {
64acfd99 328 const GFC_REAL_10 * restrict src;
28dc6b33 329 const GFC_LOGICAL_1 * restrict msrc;
644cb69f
FXC
330 GFC_REAL_10 result;
331 src = base;
332 msrc = mbase;
333 {
334
80927a56
JJ
335#if defined (GFC_REAL_10_INFINITY)
336 result = GFC_REAL_10_INFINITY;
337#else
338 result = GFC_REAL_10_HUGE;
339#endif
340#if defined (GFC_REAL_10_QUIET_NAN)
341 int non_empty_p = 0;
342#endif
036e1775 343 for (n = 0; n < len; n++, src += delta, msrc += mdelta)
644cb69f 344 {
644cb69f 345
80927a56
JJ
346#if defined (GFC_REAL_10_INFINITY) || defined (GFC_REAL_10_QUIET_NAN)
347 if (*msrc)
348 {
349#if defined (GFC_REAL_10_QUIET_NAN)
350 non_empty_p = 1;
351 if (*src <= result)
352#endif
353 break;
354 }
355 }
356 if (unlikely (n >= len))
357 {
358#if defined (GFC_REAL_10_QUIET_NAN)
359 result = non_empty_p ? GFC_REAL_10_QUIET_NAN : GFC_REAL_10_HUGE;
360#else
361 result = GFC_REAL_10_HUGE;
362#endif
363 }
364 else for (; n < len; n++, src += delta, msrc += mdelta)
365 {
366#endif
367 if (*msrc && *src < result)
368 result = *src;
644cb69f 369 }
036e1775 370 *dest = result;
644cb69f
FXC
371 }
372 /* Advance to the next element. */
373 count[0]++;
374 base += sstride[0];
375 mbase += mstride[0];
376 dest += dstride[0];
377 n = 0;
378 while (count[n] == extent[n])
80927a56
JJ
379 {
380 /* When we get to the end of a dimension, reset it and increment
381 the next dimension. */
382 count[n] = 0;
383 /* We could precalculate these products, but this is a less
384 frequently used path so probably not worth it. */
385 base -= sstride[n] * extent[n];
386 mbase -= mstride[n] * extent[n];
387 dest -= dstride[n] * extent[n];
388 n++;
80dd631f 389 if (n >= rank)
80927a56 390 {
80dd631f 391 /* Break out of the loop. */
80927a56
JJ
392 base = NULL;
393 break;
394 }
395 else
396 {
397 count[n]++;
398 base += sstride[n];
399 mbase += mstride[n];
400 dest += dstride[n];
401 }
402 }
644cb69f
FXC
403 }
404}
405
97a62038
TK
406
407extern void sminval_r10 (gfc_array_r10 * const restrict,
408 gfc_array_r10 * const restrict, const index_type * const restrict,
409 GFC_LOGICAL_4 *);
410export_proto(sminval_r10);
411
412void
413sminval_r10 (gfc_array_r10 * const restrict retarray,
414 gfc_array_r10 * const restrict array,
415 const index_type * const restrict pdim,
416 GFC_LOGICAL_4 * mask)
417{
802367d7
TK
418 index_type count[GFC_MAX_DIMENSIONS];
419 index_type extent[GFC_MAX_DIMENSIONS];
802367d7
TK
420 index_type dstride[GFC_MAX_DIMENSIONS];
421 GFC_REAL_10 * restrict dest;
97a62038
TK
422 index_type rank;
423 index_type n;
802367d7
TK
424 index_type dim;
425
97a62038
TK
426
427 if (*mask)
428 {
429 minval_r10 (retarray, array, pdim);
430 return;
431 }
802367d7
TK
432 /* Make dim zero based to avoid confusion. */
433 dim = (*pdim) - 1;
434 rank = GFC_DESCRIPTOR_RANK (array) - 1;
435
436 for (n = 0; n < dim; n++)
437 {
dfb55fdc 438 extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
802367d7
TK
439
440 if (extent[n] <= 0)
441 extent[n] = 0;
442 }
443
444 for (n = dim; n < rank; n++)
445 {
802367d7 446 extent[n] =
80927a56 447 GFC_DESCRIPTOR_EXTENT(array,n + 1);
802367d7
TK
448
449 if (extent[n] <= 0)
80927a56 450 extent[n] = 0;
802367d7 451 }
97a62038 452
21d1335b 453 if (retarray->base_addr == NULL)
97a62038 454 {
dfb55fdc 455 size_t alloc_size, str;
802367d7
TK
456
457 for (n = 0; n < rank; n++)
80927a56
JJ
458 {
459 if (n == 0)
460 str = 1;
461 else
462 str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
dfb55fdc
TK
463
464 GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
465
80927a56 466 }
802367d7 467
97a62038 468 retarray->offset = 0;
802367d7
TK
469 retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
470
92e6f3a4 471 alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
802367d7
TK
472
473 if (alloc_size == 0)
474 {
475 /* Make sure we have a zero-sized array. */
dfb55fdc 476 GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
802367d7
TK
477 return;
478 }
479 else
92e6f3a4 480 retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_REAL_10));
97a62038
TK
481 }
482 else
483 {
802367d7
TK
484 if (rank != GFC_DESCRIPTOR_RANK (retarray))
485 runtime_error ("rank of return array incorrect in"
486 " MINVAL intrinsic: is %ld, should be %ld",
487 (long int) (GFC_DESCRIPTOR_RANK (retarray)),
488 (long int) rank);
489
9731c4a3 490 if (unlikely (compile_options.bounds_check))
fd6590f8 491 {
802367d7
TK
492 for (n=0; n < rank; n++)
493 {
494 index_type ret_extent;
97a62038 495
dfb55fdc 496 ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
802367d7
TK
497 if (extent[n] != ret_extent)
498 runtime_error ("Incorrect extent in return value of"
499 " MINVAL intrinsic in dimension %ld:"
500 " is %ld, should be %ld", (long int) n + 1,
501 (long int) ret_extent, (long int) extent[n]);
502 }
fd6590f8
TK
503 }
504 }
97a62038 505
802367d7
TK
506 for (n = 0; n < rank; n++)
507 {
508 count[n] = 0;
dfb55fdc 509 dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
802367d7
TK
510 }
511
21d1335b 512 dest = retarray->base_addr;
802367d7
TK
513
514 while(1)
515 {
516 *dest = GFC_REAL_10_HUGE;
517 count[0]++;
518 dest += dstride[0];
519 n = 0;
520 while (count[n] == extent[n])
80927a56 521 {
802367d7 522 /* When we get to the end of a dimension, reset it and increment
80927a56
JJ
523 the next dimension. */
524 count[n] = 0;
525 /* We could precalculate these products, but this is a less
526 frequently used path so probably not worth it. */
527 dest -= dstride[n] * extent[n];
528 n++;
80dd631f 529 if (n >= rank)
802367d7 530 return;
80927a56
JJ
531 else
532 {
533 count[n]++;
534 dest += dstride[n];
535 }
802367d7
TK
536 }
537 }
97a62038
TK
538}
539
644cb69f 540#endif