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isl_test: test isl_basic_map_lexmin_pw_multi_aff
[isl.git] / isl_pw_templ.c
blobddabbc5cbd12c9e9ab1f64104ba48a637765ce54
1 #define xFN(TYPE,NAME) TYPE ## _ ## NAME
2 #define FN(TYPE,NAME) xFN(TYPE,NAME)
3 #define xS(TYPE,NAME) struct TYPE ## _ ## NAME
4 #define S(TYPE,NAME) xS(TYPE,NAME)
5
6 #ifdef HAS_TYPE
7 __isl_give PW *FN(PW,alloc_size)(__isl_take isl_space *dim,
8 enum isl_fold type, int n)
9 #else
10 __isl_give PW *FN(PW,alloc_size)(__isl_take isl_space *dim, int n)
11 #endif
12 {
13 isl_ctx *ctx;
14 struct PW *pw;
15
16 if (!dim)
17 return NULL;
18 ctx = isl_space_get_ctx(dim);
19 isl_assert(ctx, n >= 0, goto error);
20 pw = isl_alloc(ctx, struct PW,
21 sizeof(struct PW) + (n - 1) * sizeof(S(PW,piece)));
22 if (!pw)
23 goto error;
24
25 pw->ref = 1;
26 #ifdef HAS_TYPE
27 pw->type = type;
28 #endif
29 pw->size = n;
30 pw->n = 0;
31 pw->dim = dim;
32 return pw;
33 error:
34 isl_space_free(dim);
35 return NULL;
36 }
37
38 #ifdef HAS_TYPE
39 __isl_give PW *FN(PW,ZERO)(__isl_take isl_space *dim, enum isl_fold type)
40 {
41 return FN(PW,alloc_size)(dim, type, 0);
42 }
43 #else
44 __isl_give PW *FN(PW,ZERO)(__isl_take isl_space *dim)
45 {
46 return FN(PW,alloc_size)(dim, 0);
47 }
48 #endif
49
50 __isl_give PW *FN(PW,add_piece)(__isl_take PW *pw,
51 __isl_take isl_set *set, __isl_take EL *el)
52 {
53 isl_ctx *ctx;
54 isl_space *el_dim = NULL;
55
56 if (!pw || !set || !el)
57 goto error;
58
59 if (isl_set_plain_is_empty(set) || FN(EL,EL_IS_ZERO)(el)) {
60 isl_set_free(set);
61 FN(EL,free)(el);
62 return pw;
63 }
64
65 ctx = isl_set_get_ctx(set);
66 #ifdef HAS_TYPE
67 if (pw->type != el->type)
68 isl_die(ctx, isl_error_invalid, "fold types don't match",
69 goto error);
70 #endif
71 el_dim = FN(EL,get_space(el));
72 isl_assert(ctx, isl_space_is_equal(pw->dim, el_dim), goto error);
73 isl_assert(ctx, pw->n < pw->size, goto error);
74
75 pw->p[pw->n].set = set;
76 pw->p[pw->n].FIELD = el;
77 pw->n++;
78
79 isl_space_free(el_dim);
80 return pw;
81 error:
82 isl_space_free(el_dim);
83 FN(PW,free)(pw);
84 isl_set_free(set);
85 FN(EL,free)(el);
86 return NULL;
87 }
88
89 #ifdef HAS_TYPE
90 __isl_give PW *FN(PW,alloc)(enum isl_fold type,
91 __isl_take isl_set *set, __isl_take EL *el)
92 #else
93 __isl_give PW *FN(PW,alloc)(__isl_take isl_set *set, __isl_take EL *el)
94 #endif
95 {
96 PW *pw;
97
98 if (!set || !el)
99 goto error;
100
101 #ifdef HAS_TYPE
102 pw = FN(PW,alloc_size)(FN(EL,get_space)(el), type, 1);
103 #else
104 pw = FN(PW,alloc_size)(FN(EL,get_space)(el), 1);
105 #endif
106
107 return FN(PW,add_piece)(pw, set, el);
108 error:
109 isl_set_free(set);
110 FN(EL,free)(el);
111 return NULL;
112 }
113
114 __isl_give PW *FN(PW,dup)(__isl_keep PW *pw)
115 {
116 int i;
117 PW *dup;
118
119 if (!pw)
120 return NULL;
121
122 #ifdef HAS_TYPE
123 dup = FN(PW,alloc_size)(isl_space_copy(pw->dim), pw->type, pw->n);
124 #else
125 dup = FN(PW,alloc_size)(isl_space_copy(pw->dim), pw->n);
126 #endif
127 if (!dup)
128 return NULL;
129
130 for (i = 0; i < pw->n; ++i)
131 dup = FN(PW,add_piece)(dup, isl_set_copy(pw->p[i].set),
132 FN(EL,copy)(pw->p[i].FIELD));
133
134 return dup;
135 }
136
137 __isl_give PW *FN(PW,cow)(__isl_take PW *pw)
138 {
139 if (!pw)
140 return NULL;
141
142 if (pw->ref == 1)
143 return pw;
144 pw->ref--;
145 return FN(PW,dup)(pw);
146 }
147
148 __isl_give PW *FN(PW,copy)(__isl_keep PW *pw)
149 {
150 if (!pw)
151 return NULL;
152
153 pw->ref++;
154 return pw;
155 }
156
157 void *FN(PW,free)(__isl_take PW *pw)
158 {
159 int i;
160
161 if (!pw)
162 return NULL;
163 if (--pw->ref > 0)
164 return NULL;
165
166 for (i = 0; i < pw->n; ++i) {
167 isl_set_free(pw->p[i].set);
168 FN(EL,free)(pw->p[i].FIELD);
169 }
170 isl_space_free(pw->dim);
171 free(pw);
172
173 return NULL;
174 }
175
176 const char *FN(PW,get_dim_name)(__isl_keep PW *pw, enum isl_dim_type type,
177 unsigned pos)
178 {
179 return pw ? isl_space_get_dim_name(pw->dim, type, pos) : NULL;
180 }
181
182 __isl_give isl_id *FN(PW,get_dim_id)(__isl_keep PW *pw, enum isl_dim_type type,
183 unsigned pos)
184 {
185 return pw ? isl_space_get_dim_id(pw->dim, type, pos) : NULL;
186 }
187
188 const char *FN(PW,get_tuple_name)(__isl_keep PW *pw, enum isl_dim_type type)
189 {
190 return pw ? isl_space_get_tuple_name(pw->dim, type) : NULL;
191 }
192
193 int FN(PW,has_tuple_id)(__isl_keep PW *pw, enum isl_dim_type type)
194 {
195 return pw ? isl_space_has_tuple_id(pw->dim, type) : -1;
196 }
197
198 __isl_give isl_id *FN(PW,get_tuple_id)(__isl_keep PW *pw, enum isl_dim_type type)
199 {
200 return pw ? isl_space_get_tuple_id(pw->dim, type) : NULL;
201 }
202
203 int FN(PW,IS_ZERO)(__isl_keep PW *pw)
204 {
205 if (!pw)
206 return -1;
207
208 return pw->n == 0;
209 }
210
211 #ifndef NO_REALIGN
212 __isl_give PW *FN(PW,realign_domain)(__isl_take PW *pw,
213 __isl_take isl_reordering *exp)
214 {
215 int i;
216
217 pw = FN(PW,cow)(pw);
218 if (!pw || !exp)
219 return NULL;
220
221 for (i = 0; i < pw->n; ++i) {
222 pw->p[i].set = isl_set_realign(pw->p[i].set,
223 isl_reordering_copy(exp));
224 if (!pw->p[i].set)
225 goto error;
226 pw->p[i].FIELD = FN(EL,realign_domain)(pw->p[i].FIELD,
227 isl_reordering_copy(exp));
228 if (!pw->p[i].FIELD)
229 goto error;
230 }
231
232 pw = FN(PW,reset_domain_space)(pw, isl_space_copy(exp->dim));
233
234 isl_reordering_free(exp);
235 return pw;
236 error:
237 isl_reordering_free(exp);
238 FN(PW,free)(pw);
239 return NULL;
240 }
241
242 /* Align the parameters of "pw" to those of "model".
243 */
244 __isl_give PW *FN(PW,align_params)(__isl_take PW *pw, __isl_take isl_space *model)
245 {
246 isl_ctx *ctx;
247
248 if (!pw || !model)
249 goto error;
250
251 ctx = isl_space_get_ctx(model);
252 if (!isl_space_has_named_params(model))
253 isl_die(ctx, isl_error_invalid,
254 "model has unnamed parameters", goto error);
255 if (!isl_space_has_named_params(pw->dim))
256 isl_die(ctx, isl_error_invalid,
257 "input has unnamed parameters", goto error);
258 if (!isl_space_match(pw->dim, isl_dim_param, model, isl_dim_param)) {
259 isl_reordering *exp;
260
261 model = isl_space_drop_dims(model, isl_dim_in,
262 0, isl_space_dim(model, isl_dim_in));
263 model = isl_space_drop_dims(model, isl_dim_out,
264 0, isl_space_dim(model, isl_dim_out));
265 exp = isl_parameter_alignment_reordering(pw->dim, model);
266 exp = isl_reordering_extend_space(exp,
267 FN(PW,get_domain_space)(pw));
268 pw = FN(PW,realign_domain)(pw, exp);
269 }
270
271 isl_space_free(model);
272 return pw;
273 error:
274 isl_space_free(model);
275 FN(PW,free)(pw);
276 return NULL;
277 }
278
279 static __isl_give PW *FN(PW,align_params_pw_pw_and)(__isl_take PW *pw1,
280 __isl_take PW *pw2,
281 __isl_give PW *(*fn)(__isl_take PW *pw1, __isl_take PW *pw2))
282 {
283 isl_ctx *ctx;
284
285 if (!pw1 || !pw2)
286 goto error;
287 if (isl_space_match(pw1->dim, isl_dim_param, pw2->dim, isl_dim_param))
288 return fn(pw1, pw2);
289 ctx = FN(PW,get_ctx)(pw1);
290 if (!isl_space_has_named_params(pw1->dim) ||
291 !isl_space_has_named_params(pw2->dim))
292 isl_die(ctx, isl_error_invalid,
293 "unaligned unnamed parameters", goto error);
294 pw1 = FN(PW,align_params)(pw1, FN(PW,get_space)(pw2));
295 pw2 = FN(PW,align_params)(pw2, FN(PW,get_space)(pw1));
296 return fn(pw1, pw2);
297 error:
298 FN(PW,free)(pw1);
299 FN(PW,free)(pw2);
300 return NULL;
301 }
302
303 static __isl_give PW *FN(PW,align_params_pw_set_and)(__isl_take PW *pw,
304 __isl_take isl_set *set,
305 __isl_give PW *(*fn)(__isl_take PW *pw, __isl_take isl_set *set))
306 {
307 isl_ctx *ctx;
308
309 if (!pw || !set)
310 goto error;
311 if (isl_space_match(pw->dim, isl_dim_param, set->dim, isl_dim_param))
312 return fn(pw, set);
313 ctx = FN(PW,get_ctx)(pw);
314 if (!isl_space_has_named_params(pw->dim) ||
315 !isl_space_has_named_params(set->dim))
316 isl_die(ctx, isl_error_invalid,
317 "unaligned unnamed parameters", goto error);
318 pw = FN(PW,align_params)(pw, isl_set_get_space(set));
319 set = isl_set_align_params(set, FN(PW,get_space)(pw));
320 return fn(pw, set);
321 error:
322 FN(PW,free)(pw);
323 isl_set_free(set);
324 return NULL;
325 }
326 #endif
327
328 static __isl_give PW *FN(PW,union_add_aligned)(__isl_take PW *pw1,
329 __isl_take PW *pw2)
330 {
331 int i, j, n;
332 struct PW *res;
333 isl_ctx *ctx;
334 isl_set *set;
335
336 if (!pw1 || !pw2)
337 goto error;
338
339 ctx = isl_space_get_ctx(pw1->dim);
340 #ifdef HAS_TYPE
341 if (pw1->type != pw2->type)
342 isl_die(ctx, isl_error_invalid,
343 "fold types don't match", goto error);
344 #endif
345 isl_assert(ctx, isl_space_is_equal(pw1->dim, pw2->dim), goto error);
346
347 if (FN(PW,IS_ZERO)(pw1)) {
348 FN(PW,free)(pw1);
349 return pw2;
350 }
351
352 if (FN(PW,IS_ZERO)(pw2)) {
353 FN(PW,free)(pw2);
354 return pw1;
355 }
356
357 n = (pw1->n + 1) * (pw2->n + 1);
358 #ifdef HAS_TYPE
359 res = FN(PW,alloc_size)(isl_space_copy(pw1->dim), pw1->type, n);
360 #else
361 res = FN(PW,alloc_size)(isl_space_copy(pw1->dim), n);
362 #endif
363
364 for (i = 0; i < pw1->n; ++i) {
365 set = isl_set_copy(pw1->p[i].set);
366 for (j = 0; j < pw2->n; ++j) {
367 struct isl_set *common;
368 EL *sum;
369 set = isl_set_subtract(set,
370 isl_set_copy(pw2->p[j].set));
371 common = isl_set_intersect(isl_set_copy(pw1->p[i].set),
372 isl_set_copy(pw2->p[j].set));
373 if (isl_set_plain_is_empty(common)) {
374 isl_set_free(common);
375 continue;
376 }
377
378 sum = FN(EL,add_on_domain)(common,
379 FN(EL,copy)(pw1->p[i].FIELD),
380 FN(EL,copy)(pw2->p[j].FIELD));
381
382 res = FN(PW,add_piece)(res, common, sum);
383 }
384 res = FN(PW,add_piece)(res, set, FN(EL,copy)(pw1->p[i].FIELD));
385 }
386
387 for (j = 0; j < pw2->n; ++j) {
388 set = isl_set_copy(pw2->p[j].set);
389 for (i = 0; i < pw1->n; ++i)
390 set = isl_set_subtract(set,
391 isl_set_copy(pw1->p[i].set));
392 res = FN(PW,add_piece)(res, set, FN(EL,copy)(pw2->p[j].FIELD));
393 }
394
395 FN(PW,free)(pw1);
396 FN(PW,free)(pw2);
397
398 return res;
399 error:
400 FN(PW,free)(pw1);
401 FN(PW,free)(pw2);
402 return NULL;
403 }
404
405 /* Private version of "union_add". For isl_pw_qpolynomial and
406 * isl_pw_qpolynomial_fold, we prefer to simply call it "add".
407 */
408 static __isl_give PW *FN(PW,union_add_)(__isl_take PW *pw1, __isl_take PW *pw2)
409 {
410 return FN(PW,align_params_pw_pw_and)(pw1, pw2,
411 &FN(PW,union_add_aligned));
412 }
413
414 /* Make sure "pw" has room for at least "n" more pieces.
415 *
416 * If there is only one reference to pw, we extend it in place.
417 * Otherwise, we create a new PW and copy the pieces.
418 */
419 static __isl_give PW *FN(PW,grow)(__isl_take PW *pw, int n)
420 {
421 int i;
422 isl_ctx *ctx;
423 PW *res;
424
425 if (!pw)
426 return NULL;
427 if (pw->n + n <= pw->size)
428 return pw;
429 ctx = FN(PW,get_ctx)(pw);
430 n += pw->n;
431 if (pw->ref == 1) {
432 res = isl_realloc(ctx, pw, struct PW,
433 sizeof(struct PW) + (n - 1) * sizeof(S(PW,piece)));
434 if (!res)
435 return FN(PW,free)(pw);
436 res->size = n;
437 return res;
438 }
439 #ifdef HAS_TYPE
440 res = FN(PW,alloc_size)(isl_space_copy(pw->dim), pw->type, n);
441 #else
442 res = FN(PW,alloc_size)(isl_space_copy(pw->dim), n);
443 #endif
444 if (!res)
445 return FN(PW,free)(pw);
446 for (i = 0; i < pw->n; ++i)
447 res = FN(PW,add_piece)(res, isl_set_copy(pw->p[i].set),
448 FN(EL,copy)(pw->p[i].FIELD));
449 FN(PW,free)(pw);
450 return res;
451 }
452
453 static __isl_give PW *FN(PW,add_disjoint_aligned)(__isl_take PW *pw1,
454 __isl_take PW *pw2)
455 {
456 int i;
457 isl_ctx *ctx;
458
459 if (!pw1 || !pw2)
460 goto error;
461
462 if (pw1->size < pw1->n + pw2->n && pw1->n < pw2->n)
463 return FN(PW,add_disjoint_aligned)(pw2, pw1);
464
465 ctx = isl_space_get_ctx(pw1->dim);
466 #ifdef HAS_TYPE
467 if (pw1->type != pw2->type)
468 isl_die(ctx, isl_error_invalid,
469 "fold types don't match", goto error);
470 #endif
471 isl_assert(ctx, isl_space_is_equal(pw1->dim, pw2->dim), goto error);
472
473 if (FN(PW,IS_ZERO)(pw1)) {
474 FN(PW,free)(pw1);
475 return pw2;
476 }
477
478 if (FN(PW,IS_ZERO)(pw2)) {
479 FN(PW,free)(pw2);
480 return pw1;
481 }
482
483 pw1 = FN(PW,grow)(pw1, pw2->n);
484 if (!pw1)
485 goto error;
486
487 for (i = 0; i < pw2->n; ++i)
488 pw1 = FN(PW,add_piece)(pw1,
489 isl_set_copy(pw2->p[i].set),
490 FN(EL,copy)(pw2->p[i].FIELD));
491
492 FN(PW,free)(pw2);
493
494 return pw1;
495 error:
496 FN(PW,free)(pw1);
497 FN(PW,free)(pw2);
498 return NULL;
499 }
500
501 __isl_give PW *FN(PW,add_disjoint)(__isl_take PW *pw1, __isl_take PW *pw2)
502 {
503 return FN(PW,align_params_pw_pw_and)(pw1, pw2,
504 &FN(PW,add_disjoint_aligned));
505 }
506
507 /* This function is currently only used from isl_aff.c
508 */
509 static __isl_give PW *FN(PW,on_shared_domain)(__isl_take PW *pw1,
510 __isl_take PW *pw2,
511 __isl_give EL *(*fn)(__isl_take EL *el1, __isl_take EL *el2))
512 __attribute__ ((unused));
513
514 /* Apply "fn" to pairs of elements from pw1 and pw2 on shared domains.
515 */
516 static __isl_give PW *FN(PW,on_shared_domain)(__isl_take PW *pw1,
517 __isl_take PW *pw2,
518 __isl_give EL *(*fn)(__isl_take EL *el1, __isl_take EL *el2))
519 {
520 int i, j, n;
521 PW *res;
522
523 if (!pw1 || !pw2)
524 goto error;
525
526 n = pw1->n * pw2->n;
527 #ifdef HAS_TYPE
528 res = FN(PW,alloc_size)(isl_space_copy(pw1->dim), pw1->type, n);
529 #else
530 res = FN(PW,alloc_size)(isl_space_copy(pw1->dim), n);
531 #endif
532
533 for (i = 0; i < pw1->n; ++i) {
534 for (j = 0; j < pw2->n; ++j) {
535 isl_set *common;
536 EL *res_ij;
537 common = isl_set_intersect(
538 isl_set_copy(pw1->p[i].set),
539 isl_set_copy(pw2->p[j].set));
540 if (isl_set_plain_is_empty(common)) {
541 isl_set_free(common);
542 continue;
543 }
544
545 res_ij = fn(FN(EL,copy)(pw1->p[i].FIELD),
546 FN(EL,copy)(pw2->p[j].FIELD));
547
548 res = FN(PW,add_piece)(res, common, res_ij);
549 }
550 }
551
552 FN(PW,free)(pw1);
553 FN(PW,free)(pw2);
554 return res;
555 error:
556 FN(PW,free)(pw1);
557 FN(PW,free)(pw2);
558 return NULL;
559 }
560
561 #ifndef NO_NEG
562 __isl_give PW *FN(PW,neg)(__isl_take PW *pw)
563 {
564 int i;
565
566 if (!pw)
567 return NULL;
568
569 if (FN(PW,IS_ZERO)(pw))
570 return pw;
571
572 pw = FN(PW,cow)(pw);
573 if (!pw)
574 return NULL;
575
576 for (i = 0; i < pw->n; ++i) {
577 pw->p[i].FIELD = FN(EL,neg)(pw->p[i].FIELD);
578 if (!pw->p[i].FIELD)
579 return FN(PW,free)(pw);
580 }
581
582 return pw;
583 }
584
585 __isl_give PW *FN(PW,sub)(__isl_take PW *pw1, __isl_take PW *pw2)
586 {
587 return FN(PW,add)(pw1, FN(PW,neg)(pw2));
588 }
589 #endif
590
591 #ifndef NO_EVAL
592 __isl_give isl_qpolynomial *FN(PW,eval)(__isl_take PW *pw,
593 __isl_take isl_point *pnt)
594 {
595 int i;
596 int found = 0;
597 isl_ctx *ctx;
598 isl_space *pnt_dim = NULL;
599 isl_qpolynomial *qp;
600
601 if (!pw || !pnt)
602 goto error;
603 ctx = isl_point_get_ctx(pnt);
604 pnt_dim = isl_point_get_space(pnt);
605 isl_assert(ctx, isl_space_is_domain(pnt_dim, pw->dim), goto error);
606
607 for (i = 0; i < pw->n; ++i) {
608 found = isl_set_contains_point(pw->p[i].set, pnt);
609 if (found < 0)
610 goto error;
611 if (found)
612 break;
613 }
614 if (found)
615 qp = FN(EL,eval)(FN(EL,copy)(pw->p[i].FIELD),
616 isl_point_copy(pnt));
617 else
618 qp = isl_qpolynomial_zero_on_domain(FN(PW,get_domain_space)(pw));
619 FN(PW,free)(pw);
620 isl_space_free(pnt_dim);
621 isl_point_free(pnt);
622 return qp;
623 error:
624 FN(PW,free)(pw);
625 isl_space_free(pnt_dim);
626 isl_point_free(pnt);
627 return NULL;
628 }
629 #endif
630
631 __isl_give isl_set *FN(PW,domain)(__isl_take PW *pw)
632 {
633 int i;
634 isl_set *dom;
635
636 if (!pw)
637 return NULL;
638
639 dom = isl_set_empty(FN(PW,get_domain_space)(pw));
640 for (i = 0; i < pw->n; ++i)
641 dom = isl_set_union_disjoint(dom, isl_set_copy(pw->p[i].set));
642
643 FN(PW,free)(pw);
644
645 return dom;
646 }
647
648 static __isl_give PW *FN(PW,intersect_domain_aligned)(__isl_take PW *pw,
649 __isl_take isl_set *set)
650 {
651 int i;
652
653 if (!pw || !set)
654 goto error;
655
656 if (pw->n == 0) {
657 isl_set_free(set);
658 return pw;
659 }
660
661 pw = FN(PW,cow)(pw);
662 if (!pw)
663 goto error;
664
665 for (i = pw->n - 1; i >= 0; --i) {
666 isl_basic_set *aff;
667 pw->p[i].set = isl_set_intersect(pw->p[i].set, isl_set_copy(set));
668 if (!pw->p[i].set)
669 goto error;
670 aff = isl_set_affine_hull(isl_set_copy(pw->p[i].set));
671 pw->p[i].FIELD = FN(EL,substitute_equalities)(pw->p[i].FIELD,
672 aff);
673 if (!pw->p[i].FIELD)
674 goto error;
675 if (isl_set_plain_is_empty(pw->p[i].set)) {
676 isl_set_free(pw->p[i].set);
677 FN(EL,free)(pw->p[i].FIELD);
678 if (i != pw->n - 1)
679 pw->p[i] = pw->p[pw->n - 1];
680 pw->n--;
681 }
682 }
683
684 isl_set_free(set);
685 return pw;
686 error:
687 isl_set_free(set);
688 FN(PW,free)(pw);
689 return NULL;
690 }
691
692 __isl_give PW *FN(PW,intersect_domain)(__isl_take PW *pw,
693 __isl_take isl_set *context)
694 {
695 return FN(PW,align_params_pw_set_and)(pw, context,
696 &FN(PW,intersect_domain_aligned));
697 }
698
699 static __isl_give PW *FN(PW,gist_aligned)(__isl_take PW *pw,
700 __isl_take isl_set *context)
701 {
702 int i;
703 isl_basic_set *hull = NULL;
704
705 if (!pw || !context)
706 goto error;
707
708 if (pw->n == 0) {
709 isl_set_free(context);
710 return pw;
711 }
712
713 if (!isl_space_match(pw->dim, isl_dim_param,
714 context->dim, isl_dim_param)) {
715 pw = FN(PW,align_params)(pw, isl_set_get_space(context));
716 context = isl_set_align_params(context, FN(PW,get_space)(pw));
717 }
718
719 context = isl_set_compute_divs(context);
720 hull = isl_set_simple_hull(isl_set_copy(context));
721
722 pw = FN(PW,cow)(pw);
723 if (!pw)
724 goto error;
725
726 for (i = pw->n - 1; i >= 0; --i) {
727 pw->p[i].set = isl_set_intersect(pw->p[i].set,
728 isl_set_copy(context));
729 if (!pw->p[i].set)
730 goto error;
731 pw->p[i].FIELD = FN(EL,gist)(pw->p[i].FIELD,
732 isl_set_copy(pw->p[i].set));
733 pw->p[i].set = isl_set_gist_basic_set(pw->p[i].set,
734 isl_basic_set_copy(hull));
735 if (!pw->p[i].set)
736 goto error;
737 if (isl_set_plain_is_empty(pw->p[i].set)) {
738 isl_set_free(pw->p[i].set);
739 FN(EL,free)(pw->p[i].FIELD);
740 if (i != pw->n - 1)
741 pw->p[i] = pw->p[pw->n - 1];
742 pw->n--;
743 }
744 }
745
746 isl_basic_set_free(hull);
747 isl_set_free(context);
748
749 return pw;
750 error:
751 FN(PW,free)(pw);
752 isl_basic_set_free(hull);
753 isl_set_free(context);
754 return NULL;
755 }
756
757 __isl_give PW *FN(PW,gist)(__isl_take PW *pw, __isl_take isl_set *context)
758 {
759 return FN(PW,align_params_pw_set_and)(pw, context, &FN(PW,gist_aligned));
760 }
761
762 __isl_give PW *FN(PW,coalesce)(__isl_take PW *pw)
763 {
764 int i, j;
765
766 if (!pw)
767 return NULL;
768 if (pw->n == 0)
769 return pw;
770
771 for (i = pw->n - 1; i >= 0; --i) {
772 for (j = i - 1; j >= 0; --j) {
773 if (!FN(EL,plain_is_equal)(pw->p[i].FIELD,
774 pw->p[j].FIELD))
775 continue;
776 pw->p[j].set = isl_set_union(pw->p[j].set,
777 pw->p[i].set);
778 FN(EL,free)(pw->p[i].FIELD);
779 if (i != pw->n - 1)
780 pw->p[i] = pw->p[pw->n - 1];
781 pw->n--;
782 break;
783 }
784 if (j >= 0)
785 continue;
786 pw->p[i].set = isl_set_coalesce(pw->p[i].set);
787 if (!pw->p[i].set)
788 goto error;
789 }
790
791 return pw;
792 error:
793 FN(PW,free)(pw);
794 return NULL;
795 }
796
797 isl_ctx *FN(PW,get_ctx)(__isl_keep PW *pw)
798 {
799 return pw ? isl_space_get_ctx(pw->dim) : NULL;
800 }
801
802 #ifndef NO_INVOLVES_DIMS
803 int FN(PW,involves_dims)(__isl_keep PW *pw, enum isl_dim_type type,
804 unsigned first, unsigned n)
805 {
806 int i;
807 enum isl_dim_type set_type;
808
809 if (!pw)
810 return -1;
811 if (pw->n == 0 || n == 0)
812 return 0;
813
814 set_type = type == isl_dim_in ? isl_dim_set : type;
815
816 for (i = 0; i < pw->n; ++i) {
817 int involves = FN(EL,involves_dims)(pw->p[i].FIELD,
818 type, first, n);
819 if (involves < 0 || involves)
820 return involves;
821 involves = isl_set_involves_dims(pw->p[i].set,
822 set_type, first, n);
823 if (involves < 0 || involves)
824 return involves;
825 }
826 return 0;
827 }
828 #endif
829
830 __isl_give PW *FN(PW,set_dim_name)(__isl_take PW *pw,
831 enum isl_dim_type type, unsigned pos, const char *s)
832 {
833 int i;
834 enum isl_dim_type set_type;
835
836 pw = FN(PW,cow)(pw);
837 if (!pw)
838 return NULL;
839
840 set_type = type == isl_dim_in ? isl_dim_set : type;
841
842 pw->dim = isl_space_set_dim_name(pw->dim, type, pos, s);
843 if (!pw->dim)
844 goto error;
845
846 for (i = 0; i < pw->n; ++i) {
847 pw->p[i].set = isl_set_set_dim_name(pw->p[i].set,
848 set_type, pos, s);
849 if (!pw->p[i].set)
850 goto error;
851 pw->p[i].FIELD = FN(EL,set_dim_name)(pw->p[i].FIELD, type, pos, s);
852 if (!pw->p[i].FIELD)
853 goto error;
854 }
855
856 return pw;
857 error:
858 FN(PW,free)(pw);
859 return NULL;
860 }
861
862 #ifndef NO_DROP_DIMS
863 __isl_give PW *FN(PW,drop_dims)(__isl_take PW *pw,
864 enum isl_dim_type type, unsigned first, unsigned n)
865 {
866 int i;
867 enum isl_dim_type set_type;
868
869 if (!pw)
870 return NULL;
871 if (n == 0 && !isl_space_get_tuple_name(pw->dim, type))
872 return pw;
873
874 set_type = type == isl_dim_in ? isl_dim_set : type;
875
876 pw = FN(PW,cow)(pw);
877 if (!pw)
878 return NULL;
879 pw->dim = isl_space_drop_dims(pw->dim, type, first, n);
880 if (!pw->dim)
881 goto error;
882 for (i = 0; i < pw->n; ++i) {
883 pw->p[i].set = isl_set_drop(pw->p[i].set, set_type, first, n);
884 if (!pw->p[i].set)
885 goto error;
886 pw->p[i].FIELD = FN(EL,drop_dims)(pw->p[i].FIELD, type, first, n);
887 if (!pw->p[i].FIELD)
888 goto error;
889 }
890
891 return pw;
892 error:
893 FN(PW,free)(pw);
894 return NULL;
895 }
896
897 /* This function is very similar to drop_dims.
898 * The only difference is that the cells may still involve
899 * the specified dimensions. They are removed using
900 * isl_set_project_out instead of isl_set_drop.
901 */
902 __isl_give PW *FN(PW,project_out)(__isl_take PW *pw,
903 enum isl_dim_type type, unsigned first, unsigned n)
904 {
905 int i;
906 enum isl_dim_type set_type;
907
908 if (!pw)
909 return NULL;
910 if (n == 0 && !isl_space_get_tuple_name(pw->dim, type))
911 return pw;
912
913 set_type = type == isl_dim_in ? isl_dim_set : type;
914
915 pw = FN(PW,cow)(pw);
916 if (!pw)
917 return NULL;
918 pw->dim = isl_space_drop_dims(pw->dim, type, first, n);
919 if (!pw->dim)
920 goto error;
921 for (i = 0; i < pw->n; ++i) {
922 pw->p[i].set = isl_set_project_out(pw->p[i].set,
923 set_type, first, n);
924 if (!pw->p[i].set)
925 goto error;
926 pw->p[i].FIELD = FN(EL,drop_dims)(pw->p[i].FIELD, type, first, n);
927 if (!pw->p[i].FIELD)
928 goto error;
929 }
930
931 return pw;
932 error:
933 FN(PW,free)(pw);
934 return NULL;
935 }
936
937 /* Project the domain of pw onto its parameter space.
938 */
939 __isl_give PW *FN(PW,project_domain_on_params)(__isl_take PW *pw)
940 {
941 isl_space *space;
942 unsigned n;
943
944 n = FN(PW,dim)(pw, isl_dim_in);
945 pw = FN(PW,project_out)(pw, isl_dim_in, 0, n);
946 space = FN(PW,get_domain_space)(pw);
947 space = isl_space_params(space);
948 pw = FN(PW,reset_domain_space)(pw, space);
949 return pw;
950 }
951 #endif
952
953 #ifndef NO_INSERT_DIMS
954 __isl_give PW *FN(PW,insert_dims)(__isl_take PW *pw, enum isl_dim_type type,
955 unsigned first, unsigned n)
956 {
957 int i;
958 enum isl_dim_type set_type;
959
960 if (!pw)
961 return NULL;
962 if (n == 0 && !isl_space_is_named_or_nested(pw->dim, type))
963 return pw;
964
965 set_type = type == isl_dim_in ? isl_dim_set : type;
966
967 pw = FN(PW,cow)(pw);
968 if (!pw)
969 return NULL;
970
971 pw->dim = isl_space_insert_dims(pw->dim, type, first, n);
972 if (!pw->dim)
973 goto error;
974
975 for (i = 0; i < pw->n; ++i) {
976 pw->p[i].set = isl_set_insert_dims(pw->p[i].set,
977 set_type, first, n);
978 if (!pw->p[i].set)
979 goto error;
980 pw->p[i].FIELD = FN(EL,insert_dims)(pw->p[i].FIELD,
981 type, first, n);
982 if (!pw->p[i].FIELD)
983 goto error;
984 }
985
986 return pw;
987 error:
988 FN(PW,free)(pw);
989 return NULL;
990 }
991 #endif
992
993 __isl_give PW *FN(PW,fix_dim)(__isl_take PW *pw,
994 enum isl_dim_type type, unsigned pos, isl_int v)
995 {
996 int i;
997
998 if (!pw)
999 return NULL;
1000
1001 if (type == isl_dim_in)
1002 type = isl_dim_set;
1003
1004 pw = FN(PW,cow)(pw);
1005 if (!pw)
1006 return NULL;
1007 for (i = 0; i < pw->n; ++i) {
1008 pw->p[i].set = isl_set_fix(pw->p[i].set, type, pos, v);
1009 if (!pw->p[i].set)
1010 goto error;
1011 }
1012
1013 return pw;
1014 error:
1015 FN(PW,free)(pw);
1016 return NULL;
1017 }
1018
1019 unsigned FN(PW,dim)(__isl_keep PW *pw, enum isl_dim_type type)
1020 {
1021 return pw ? isl_space_dim(pw->dim, type) : 0;
1022 }
1023
1024 __isl_give PW *FN(PW,split_dims)(__isl_take PW *pw,
1025 enum isl_dim_type type, unsigned first, unsigned n)
1026 {
1027 int i;
1028
1029 if (!pw)
1030 return NULL;
1031 if (n == 0)
1032 return pw;
1033
1034 if (type == isl_dim_in)
1035 type = isl_dim_set;
1036
1037 pw = FN(PW,cow)(pw);
1038 if (!pw)
1039 return NULL;
1040 if (!pw->dim)
1041 goto error;
1042 for (i = 0; i < pw->n; ++i) {
1043 pw->p[i].set = isl_set_split_dims(pw->p[i].set, type, first, n);
1044 if (!pw->p[i].set)
1045 goto error;
1046 }
1047
1048 return pw;
1049 error:
1050 FN(PW,free)(pw);
1051 return NULL;
1052 }
1053
1054 #ifndef NO_OPT
1055 /* Compute the maximal value attained by the piecewise quasipolynomial
1056 * on its domain or zero if the domain is empty.
1057 * In the worst case, the domain is scanned completely,
1058 * so the domain is assumed to be bounded.
1059 */
1060 __isl_give isl_qpolynomial *FN(PW,opt)(__isl_take PW *pw, int max)
1061 {
1062 int i;
1063 isl_qpolynomial *opt;
1064
1065 if (!pw)
1066 return NULL;
1067
1068 if (pw->n == 0) {
1069 isl_space *dim = isl_space_copy(pw->dim);
1070 FN(PW,free)(pw);
1071 return isl_qpolynomial_zero_on_domain(dim);
1072 }
1073
1074 opt = FN(EL,opt_on_domain)(FN(EL,copy)(pw->p[0].FIELD),
1075 isl_set_copy(pw->p[0].set), max);
1076 for (i = 1; i < pw->n; ++i) {
1077 isl_qpolynomial *opt_i;
1078 opt_i = FN(EL,opt_on_domain)(FN(EL,copy)(pw->p[i].FIELD),
1079 isl_set_copy(pw->p[i].set), max);
1080 if (max)
1081 opt = isl_qpolynomial_max_cst(opt, opt_i);
1082 else
1083 opt = isl_qpolynomial_min_cst(opt, opt_i);
1084 }
1085
1086 FN(PW,free)(pw);
1087 return opt;
1088 }
1089
1090 __isl_give isl_qpolynomial *FN(PW,max)(__isl_take PW *pw)
1091 {
1092 return FN(PW,opt)(pw, 1);
1093 }
1094
1095 __isl_give isl_qpolynomial *FN(PW,min)(__isl_take PW *pw)
1096 {
1097 return FN(PW,opt)(pw, 0);
1098 }
1099 #endif
1100
1101 __isl_give isl_space *FN(PW,get_space)(__isl_keep PW *pw)
1102 {
1103 return pw ? isl_space_copy(pw->dim) : NULL;
1104 }
1105
1106 __isl_give isl_space *FN(PW,get_domain_space)(__isl_keep PW *pw)
1107 {
1108 return pw ? isl_space_domain(isl_space_copy(pw->dim)) : NULL;
1109 }
1110
1111 #ifndef NO_RESET_DIM
1112 /* Reset the space of "pw". Since we don't know if the elements
1113 * represent the spaces themselves or their domains, we pass along
1114 * both when we call their reset_space_and_domain.
1115 */
1116 static __isl_give PW *FN(PW,reset_space_and_domain)(__isl_take PW *pw,
1117 __isl_take isl_space *space, __isl_take isl_space *domain)
1118 {
1119 int i;
1120
1121 pw = FN(PW,cow)(pw);
1122 if (!pw || !space || !domain)
1123 goto error;
1124
1125 for (i = 0; i < pw->n; ++i) {
1126 pw->p[i].set = isl_set_reset_space(pw->p[i].set,
1127 isl_space_copy(domain));
1128 if (!pw->p[i].set)
1129 goto error;
1130 pw->p[i].FIELD = FN(EL,reset_space_and_domain)(pw->p[i].FIELD,
1131 isl_space_copy(space), isl_space_copy(domain));
1132 if (!pw->p[i].FIELD)
1133 goto error;
1134 }
1135
1136 isl_space_free(domain);
1137
1138 isl_space_free(pw->dim);
1139 pw->dim = space;
1140
1141 return pw;
1142 error:
1143 isl_space_free(domain);
1144 isl_space_free(space);
1145 FN(PW,free)(pw);
1146 return NULL;
1147 }
1148
1149 __isl_give PW *FN(PW,reset_domain_space)(__isl_take PW *pw,
1150 __isl_take isl_space *domain)
1151 {
1152 isl_space *space;
1153
1154 space = isl_space_extend_domain_with_range(isl_space_copy(domain),
1155 FN(PW,get_space)(pw));
1156 return FN(PW,reset_space_and_domain)(pw, space, domain);
1157 }
1158
1159 __isl_give PW *FN(PW,reset_space)(__isl_take PW *pw, __isl_take isl_space *dim)
1160 {
1161 isl_space *domain;
1162
1163 domain = isl_space_domain(isl_space_copy(dim));
1164 return FN(PW,reset_space_and_domain)(pw, dim, domain);
1165 }
1166
1167 __isl_give PW *FN(PW,set_tuple_id)(__isl_keep PW *pw, enum isl_dim_type type,
1168 __isl_take isl_id *id)
1169 {
1170 isl_space *space;
1171
1172 pw = FN(PW,cow)(pw);
1173 if (!pw)
1174 return isl_id_free(id);
1175
1176 space = FN(PW,get_space)(pw);
1177 space = isl_space_set_tuple_id(space, type, id);
1178
1179 return FN(PW,reset_space)(pw, space);
1180 }
1181
1182 __isl_give PW *FN(PW,set_dim_id)(__isl_take PW *pw,
1183 enum isl_dim_type type, unsigned pos, __isl_take isl_id *id)
1184 {
1185 pw = FN(PW,cow)(pw);
1186 if (!pw)
1187 return isl_id_free(id);
1188 pw->dim = isl_space_set_dim_id(pw->dim, type, pos, id);
1189 return FN(PW,reset_space)(pw, isl_space_copy(pw->dim));
1190 }
1191 #endif
1192
1193 int FN(PW,has_equal_space)(__isl_keep PW *pw1, __isl_keep PW *pw2)
1194 {
1195 if (!pw1 || !pw2)
1196 return -1;
1197
1198 return isl_space_is_equal(pw1->dim, pw2->dim);
1199 }
1200
1201 #ifndef NO_MORPH
1202 __isl_give PW *FN(PW,morph_domain)(__isl_take PW *pw,
1203 __isl_take isl_morph *morph)
1204 {
1205 int i;
1206 isl_ctx *ctx;
1207
1208 if (!pw || !morph)
1209 goto error;
1210
1211 ctx = isl_space_get_ctx(pw->dim);
1212 isl_assert(ctx, isl_space_is_domain(morph->dom->dim, pw->dim),
1213 goto error);
1214
1215 pw = FN(PW,cow)(pw);
1216 if (!pw)
1217 goto error;
1218 pw->dim = isl_space_extend_domain_with_range(
1219 isl_space_copy(morph->ran->dim), pw->dim);
1220 if (!pw->dim)
1221 goto error;
1222
1223 for (i = 0; i < pw->n; ++i) {
1224 pw->p[i].set = isl_morph_set(isl_morph_copy(morph), pw->p[i].set);
1225 if (!pw->p[i].set)
1226 goto error;
1227 pw->p[i].FIELD = FN(EL,morph_domain)(pw->p[i].FIELD,
1228 isl_morph_copy(morph));
1229 if (!pw->p[i].FIELD)
1230 goto error;
1231 }
1232
1233 isl_morph_free(morph);
1234
1235 return pw;
1236 error:
1237 FN(PW,free)(pw);
1238 isl_morph_free(morph);
1239 return NULL;
1240 }
1241 #endif
1242
1243 int FN(PW,foreach_piece)(__isl_keep PW *pw,
1244 int (*fn)(__isl_take isl_set *set, __isl_take EL *el, void *user),
1245 void *user)
1246 {
1247 int i;
1248
1249 if (!pw)
1250 return -1;
1251
1252 for (i = 0; i < pw->n; ++i)
1253 if (fn(isl_set_copy(pw->p[i].set),
1254 FN(EL,copy)(pw->p[i].FIELD), user) < 0)
1255 return -1;
1256
1257 return 0;
1258 }
1259
1260 #ifndef NO_LIFT
1261 static int any_divs(__isl_keep isl_set *set)
1262 {
1263 int i;
1264
1265 if (!set)
1266 return -1;
1267
1268 for (i = 0; i < set->n; ++i)
1269 if (set->p[i]->n_div > 0)
1270 return 1;
1271
1272 return 0;
1273 }
1274
1275 static int foreach_lifted_subset(__isl_take isl_set *set, __isl_take EL *el,
1276 int (*fn)(__isl_take isl_set *set, __isl_take EL *el,
1277 void *user), void *user)
1278 {
1279 int i;
1280
1281 if (!set || !el)
1282 goto error;
1283
1284 for (i = 0; i < set->n; ++i) {
1285 isl_set *lift;
1286 EL *copy;
1287
1288 lift = isl_set_from_basic_set(isl_basic_set_copy(set->p[i]));
1289 lift = isl_set_lift(lift);
1290
1291 copy = FN(EL,copy)(el);
1292 copy = FN(EL,lift)(copy, isl_set_get_space(lift));
1293
1294 if (fn(lift, copy, user) < 0)
1295 goto error;
1296 }
1297
1298 isl_set_free(set);
1299 FN(EL,free)(el);
1300
1301 return 0;
1302 error:
1303 isl_set_free(set);
1304 FN(EL,free)(el);
1305 return -1;
1306 }
1307
1308 int FN(PW,foreach_lifted_piece)(__isl_keep PW *pw,
1309 int (*fn)(__isl_take isl_set *set, __isl_take EL *el,
1310 void *user), void *user)
1311 {
1312 int i;
1313
1314 if (!pw)
1315 return -1;
1316
1317 for (i = 0; i < pw->n; ++i) {
1318 isl_set *set;
1319 EL *el;
1320
1321 set = isl_set_copy(pw->p[i].set);
1322 el = FN(EL,copy)(pw->p[i].FIELD);
1323 if (!any_divs(set)) {
1324 if (fn(set, el, user) < 0)
1325 return -1;
1326 continue;
1327 }
1328 if (foreach_lifted_subset(set, el, fn, user) < 0)
1329 return -1;
1330 }
1331
1332 return 0;
1333 }
1334 #endif
1335
1336 #ifndef NO_MOVE_DIMS
1337 __isl_give PW *FN(PW,move_dims)(__isl_take PW *pw,
1338 enum isl_dim_type dst_type, unsigned dst_pos,
1339 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
1340 {
1341 int i;
1342
1343 pw = FN(PW,cow)(pw);
1344 if (!pw)
1345 return NULL;
1346
1347 pw->dim = isl_space_move_dims(pw->dim, dst_type, dst_pos, src_type, src_pos, n);
1348 if (!pw->dim)
1349 goto error;
1350
1351 for (i = 0; i < pw->n; ++i) {
1352 pw->p[i].FIELD = FN(EL,move_dims)(pw->p[i].FIELD,
1353 dst_type, dst_pos, src_type, src_pos, n);
1354 if (!pw->p[i].FIELD)
1355 goto error;
1356 }
1357
1358 if (dst_type == isl_dim_in)
1359 dst_type = isl_dim_set;
1360 if (src_type == isl_dim_in)
1361 src_type = isl_dim_set;
1362
1363 for (i = 0; i < pw->n; ++i) {
1364 pw->p[i].set = isl_set_move_dims(pw->p[i].set,
1365 dst_type, dst_pos,
1366 src_type, src_pos, n);
1367 if (!pw->p[i].set)
1368 goto error;
1369 }
1370
1371 return pw;
1372 error:
1373 FN(PW,free)(pw);
1374 return NULL;
1375 }
1376 #endif
1377
1378 __isl_give PW *FN(PW,mul_isl_int)(__isl_take PW *pw, isl_int v)
1379 {
1380 int i;
1381
1382 if (isl_int_is_one(v))
1383 return pw;
1384 if (pw && isl_int_is_zero(v)) {
1385 PW *zero;
1386 isl_space *dim = FN(PW,get_space)(pw);
1387 #ifdef HAS_TYPE
1388 zero = FN(PW,ZERO)(dim, pw->type);
1389 #else
1390 zero = FN(PW,ZERO)(dim);
1391 #endif
1392 FN(PW,free)(pw);
1393 return zero;
1394 }
1395 pw = FN(PW,cow)(pw);
1396 if (!pw)
1397 return NULL;
1398 if (pw->n == 0)
1399 return pw;
1400
1401 #ifdef HAS_TYPE
1402 if (isl_int_is_neg(v))
1403 pw->type = isl_fold_type_negate(pw->type);
1404 #endif
1405 for (i = 0; i < pw->n; ++i) {
1406 pw->p[i].FIELD = FN(EL,scale)(pw->p[i].FIELD, v);
1407 if (!pw->p[i].FIELD)
1408 goto error;
1409 }
1410
1411 return pw;
1412 error:
1413 FN(PW,free)(pw);
1414 return NULL;
1415 }
1416
1417 __isl_give PW *FN(PW,scale)(__isl_take PW *pw, isl_int v)
1418 {
1419 return FN(PW,mul_isl_int)(pw, v);
1420 }
1421
1422 static int FN(PW,qsort_set_cmp)(const void *p1, const void *p2)
1423 {
1424 const isl_set *set1 = *(const isl_set **)p1;
1425 const isl_set *set2 = *(const isl_set **)p2;
1426
1427 return isl_set_plain_cmp(set1, set2);
1428 }
1429
1430 /* We normalize in place, but if anything goes wrong we need
1431 * to return NULL, so we need to make sure we don't change the
1432 * meaning of any possible other copies of map.
1433 */
1434 __isl_give PW *FN(PW,normalize)(__isl_take PW *pw)
1435 {
1436 int i, j;
1437 isl_set *set;
1438
1439 if (!pw)
1440 return NULL;
1441 for (i = 0; i < pw->n; ++i) {
1442 set = isl_set_normalize(isl_set_copy(pw->p[i].set));
1443 if (!set)
1444 return FN(PW,free)(pw);
1445 isl_set_free(pw->p[i].set);
1446 pw->p[i].set = set;
1447 }
1448 qsort(pw->p, pw->n, sizeof(pw->p[0]), &FN(PW,qsort_set_cmp));
1449 for (i = pw->n - 1; i >= 1; --i) {
1450 if (!isl_set_plain_is_equal(pw->p[i - 1].set, pw->p[i].set))
1451 continue;
1452 if (!FN(EL,plain_is_equal)(pw->p[i - 1].FIELD, pw->p[i].FIELD))
1453 continue;
1454 set = isl_set_union(isl_set_copy(pw->p[i - 1].set),
1455 isl_set_copy(pw->p[i].set));
1456 if (!set)
1457 return FN(PW,free)(pw);
1458 isl_set_free(pw->p[i].set);
1459 FN(EL,free)(pw->p[i].FIELD);
1460 isl_set_free(pw->p[i - 1].set);
1461 pw->p[i - 1].set = set;
1462 for (j = i + 1; j < pw->n; ++j)
1463 pw->p[j - 1] = pw->p[j];
1464 pw->n--;
1465 }
1466
1467 return pw;
1468 }
1469
1470 /* Is pw1 obviously equal to pw2?
1471 * That is, do they have obviously identical cells and obviously identical
1472 * elements on each cell?
1473 */
1474 int FN(PW,plain_is_equal)(__isl_keep PW *pw1, __isl_keep PW *pw2)
1475 {
1476 int i;
1477 int equal;
1478
1479 if (!pw1 || !pw2)
1480 return -1;
1481
1482 if (pw1 == pw2)
1483 return 1;
1484 if (!isl_space_is_equal(pw1->dim, pw2->dim))
1485 return 0;
1486
1487 pw1 = FN(PW,copy)(pw1);
1488 pw2 = FN(PW,copy)(pw2);
1489 pw1 = FN(PW,normalize)(pw1);
1490 pw2 = FN(PW,normalize)(pw2);
1491 if (!pw1 || !pw2)
1492 goto error;
1493
1494 equal = pw1->n == pw2->n;
1495 for (i = 0; equal && i < pw1->n; ++i) {
1496 equal = isl_set_plain_is_equal(pw1->p[i].set, pw2->p[i].set);
1497 if (equal < 0)
1498 goto error;
1499 if (!equal)
1500 break;
1501 equal = FN(EL,plain_is_equal)(pw1->p[i].FIELD, pw2->p[i].FIELD);
1502 if (equal < 0)
1503 goto error;
1504 }
1505
1506 FN(PW,free)(pw1);
1507 FN(PW,free)(pw2);
1508 return equal;
1509 error:
1510 FN(PW,free)(pw1);
1511 FN(PW,free)(pw2);
1512 return -1;
1513 }
Integer set library