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isl_printer_print_{basic_,}{set,map}: don't start new line in omega format
[isl.git] / isl_pw_templ.c
blob394571d7e575f7009aa80cfcd5df0888423c1f1e
1 #include <isl/aff.h>
2
3 #define xFN(TYPE,NAME) TYPE ## _ ## NAME
4 #define FN(TYPE,NAME) xFN(TYPE,NAME)
5 #define xS(TYPE,NAME) struct TYPE ## _ ## NAME
6 #define S(TYPE,NAME) xS(TYPE,NAME)
7
8 #ifdef HAS_TYPE
9 __isl_give PW *FN(PW,alloc_size)(__isl_take isl_space *dim,
10 enum isl_fold type, int n)
11 #else
12 __isl_give PW *FN(PW,alloc_size)(__isl_take isl_space *dim, int n)
13 #endif
14 {
15 isl_ctx *ctx;
16 struct PW *pw;
17
18 if (!dim)
19 return NULL;
20 ctx = isl_space_get_ctx(dim);
21 isl_assert(ctx, n >= 0, goto error);
22 pw = isl_alloc(ctx, struct PW,
23 sizeof(struct PW) + (n - 1) * sizeof(S(PW,piece)));
24 if (!pw)
25 goto error;
26
27 pw->ref = 1;
28 #ifdef HAS_TYPE
29 pw->type = type;
30 #endif
31 pw->size = n;
32 pw->n = 0;
33 pw->dim = dim;
34 return pw;
35 error:
36 isl_space_free(dim);
37 return NULL;
38 }
39
40 #ifdef HAS_TYPE
41 __isl_give PW *FN(PW,ZERO)(__isl_take isl_space *dim, enum isl_fold type)
42 {
43 return FN(PW,alloc_size)(dim, type, 0);
44 }
45 #else
46 __isl_give PW *FN(PW,ZERO)(__isl_take isl_space *dim)
47 {
48 return FN(PW,alloc_size)(dim, 0);
49 }
50 #endif
51
52 __isl_give PW *FN(PW,add_piece)(__isl_take PW *pw,
53 __isl_take isl_set *set, __isl_take EL *el)
54 {
55 isl_ctx *ctx;
56 isl_space *el_dim = NULL;
57
58 if (!pw || !set || !el)
59 goto error;
60
61 if (isl_set_plain_is_empty(set) || FN(EL,EL_IS_ZERO)(el)) {
62 isl_set_free(set);
63 FN(EL,free)(el);
64 return pw;
65 }
66
67 ctx = isl_set_get_ctx(set);
68 #ifdef HAS_TYPE
69 if (pw->type != el->type)
70 isl_die(ctx, isl_error_invalid, "fold types don't match",
71 goto error);
72 #endif
73 el_dim = FN(EL,get_space(el));
74 isl_assert(ctx, isl_space_is_equal(pw->dim, el_dim), goto error);
75 isl_assert(ctx, pw->n < pw->size, goto error);
76
77 pw->p[pw->n].set = set;
78 pw->p[pw->n].FIELD = el;
79 pw->n++;
80
81 isl_space_free(el_dim);
82 return pw;
83 error:
84 isl_space_free(el_dim);
85 FN(PW,free)(pw);
86 isl_set_free(set);
87 FN(EL,free)(el);
88 return NULL;
89 }
90
91 #ifdef HAS_TYPE
92 __isl_give PW *FN(PW,alloc)(enum isl_fold type,
93 __isl_take isl_set *set, __isl_take EL *el)
94 #else
95 __isl_give PW *FN(PW,alloc)(__isl_take isl_set *set, __isl_take EL *el)
96 #endif
97 {
98 PW *pw;
99
100 if (!set || !el)
101 goto error;
102
103 #ifdef HAS_TYPE
104 pw = FN(PW,alloc_size)(FN(EL,get_space)(el), type, 1);
105 #else
106 pw = FN(PW,alloc_size)(FN(EL,get_space)(el), 1);
107 #endif
108
109 return FN(PW,add_piece)(pw, set, el);
110 error:
111 isl_set_free(set);
112 FN(EL,free)(el);
113 return NULL;
114 }
115
116 __isl_give PW *FN(PW,dup)(__isl_keep PW *pw)
117 {
118 int i;
119 PW *dup;
120
121 if (!pw)
122 return NULL;
123
124 #ifdef HAS_TYPE
125 dup = FN(PW,alloc_size)(isl_space_copy(pw->dim), pw->type, pw->n);
126 #else
127 dup = FN(PW,alloc_size)(isl_space_copy(pw->dim), pw->n);
128 #endif
129 if (!dup)
130 return NULL;
131
132 for (i = 0; i < pw->n; ++i)
133 dup = FN(PW,add_piece)(dup, isl_set_copy(pw->p[i].set),
134 FN(EL,copy)(pw->p[i].FIELD));
135
136 return dup;
137 }
138
139 __isl_give PW *FN(PW,cow)(__isl_take PW *pw)
140 {
141 if (!pw)
142 return NULL;
143
144 if (pw->ref == 1)
145 return pw;
146 pw->ref--;
147 return FN(PW,dup)(pw);
148 }
149
150 __isl_give PW *FN(PW,copy)(__isl_keep PW *pw)
151 {
152 if (!pw)
153 return NULL;
154
155 pw->ref++;
156 return pw;
157 }
158
159 void *FN(PW,free)(__isl_take PW *pw)
160 {
161 int i;
162
163 if (!pw)
164 return NULL;
165 if (--pw->ref > 0)
166 return NULL;
167
168 for (i = 0; i < pw->n; ++i) {
169 isl_set_free(pw->p[i].set);
170 FN(EL,free)(pw->p[i].FIELD);
171 }
172 isl_space_free(pw->dim);
173 free(pw);
174
175 return NULL;
176 }
177
178 const char *FN(PW,get_dim_name)(__isl_keep PW *pw, enum isl_dim_type type,
179 unsigned pos)
180 {
181 return pw ? isl_space_get_dim_name(pw->dim, type, pos) : NULL;
182 }
183
184 int FN(PW,has_dim_id)(__isl_keep PW *pw, enum isl_dim_type type, unsigned pos)
185 {
186 return pw ? isl_space_has_dim_id(pw->dim, type, pos) : -1;
187 }
188
189 __isl_give isl_id *FN(PW,get_dim_id)(__isl_keep PW *pw, enum isl_dim_type type,
190 unsigned pos)
191 {
192 return pw ? isl_space_get_dim_id(pw->dim, type, pos) : NULL;
193 }
194
195 int FN(PW,has_tuple_name)(__isl_keep PW *pw, enum isl_dim_type type)
196 {
197 return pw ? isl_space_has_tuple_name(pw->dim, type) : -1;
198 }
199
200 const char *FN(PW,get_tuple_name)(__isl_keep PW *pw, enum isl_dim_type type)
201 {
202 return pw ? isl_space_get_tuple_name(pw->dim, type) : NULL;
203 }
204
205 int FN(PW,has_tuple_id)(__isl_keep PW *pw, enum isl_dim_type type)
206 {
207 return pw ? isl_space_has_tuple_id(pw->dim, type) : -1;
208 }
209
210 __isl_give isl_id *FN(PW,get_tuple_id)(__isl_keep PW *pw, enum isl_dim_type type)
211 {
212 return pw ? isl_space_get_tuple_id(pw->dim, type) : NULL;
213 }
214
215 int FN(PW,IS_ZERO)(__isl_keep PW *pw)
216 {
217 if (!pw)
218 return -1;
219
220 return pw->n == 0;
221 }
222
223 #ifndef NO_REALIGN
224 __isl_give PW *FN(PW,realign_domain)(__isl_take PW *pw,
225 __isl_take isl_reordering *exp)
226 {
227 int i;
228
229 pw = FN(PW,cow)(pw);
230 if (!pw || !exp)
231 goto error;
232
233 for (i = 0; i < pw->n; ++i) {
234 pw->p[i].set = isl_set_realign(pw->p[i].set,
235 isl_reordering_copy(exp));
236 if (!pw->p[i].set)
237 goto error;
238 pw->p[i].FIELD = FN(EL,realign_domain)(pw->p[i].FIELD,
239 isl_reordering_copy(exp));
240 if (!pw->p[i].FIELD)
241 goto error;
242 }
243
244 pw = FN(PW,reset_domain_space)(pw, isl_space_copy(exp->dim));
245
246 isl_reordering_free(exp);
247 return pw;
248 error:
249 isl_reordering_free(exp);
250 FN(PW,free)(pw);
251 return NULL;
252 }
253
254 /* Align the parameters of "pw" to those of "model".
255 */
256 __isl_give PW *FN(PW,align_params)(__isl_take PW *pw, __isl_take isl_space *model)
257 {
258 isl_ctx *ctx;
259
260 if (!pw || !model)
261 goto error;
262
263 ctx = isl_space_get_ctx(model);
264 if (!isl_space_has_named_params(model))
265 isl_die(ctx, isl_error_invalid,
266 "model has unnamed parameters", goto error);
267 if (!isl_space_has_named_params(pw->dim))
268 isl_die(ctx, isl_error_invalid,
269 "input has unnamed parameters", goto error);
270 if (!isl_space_match(pw->dim, isl_dim_param, model, isl_dim_param)) {
271 isl_reordering *exp;
272
273 model = isl_space_drop_dims(model, isl_dim_in,
274 0, isl_space_dim(model, isl_dim_in));
275 model = isl_space_drop_dims(model, isl_dim_out,
276 0, isl_space_dim(model, isl_dim_out));
277 exp = isl_parameter_alignment_reordering(pw->dim, model);
278 exp = isl_reordering_extend_space(exp,
279 FN(PW,get_domain_space)(pw));
280 pw = FN(PW,realign_domain)(pw, exp);
281 }
282
283 isl_space_free(model);
284 return pw;
285 error:
286 isl_space_free(model);
287 FN(PW,free)(pw);
288 return NULL;
289 }
290
291 static __isl_give PW *FN(PW,align_params_pw_pw_and)(__isl_take PW *pw1,
292 __isl_take PW *pw2,
293 __isl_give PW *(*fn)(__isl_take PW *pw1, __isl_take PW *pw2))
294 {
295 isl_ctx *ctx;
296
297 if (!pw1 || !pw2)
298 goto error;
299 if (isl_space_match(pw1->dim, isl_dim_param, pw2->dim, isl_dim_param))
300 return fn(pw1, pw2);
301 ctx = FN(PW,get_ctx)(pw1);
302 if (!isl_space_has_named_params(pw1->dim) ||
303 !isl_space_has_named_params(pw2->dim))
304 isl_die(ctx, isl_error_invalid,
305 "unaligned unnamed parameters", goto error);
306 pw1 = FN(PW,align_params)(pw1, FN(PW,get_space)(pw2));
307 pw2 = FN(PW,align_params)(pw2, FN(PW,get_space)(pw1));
308 return fn(pw1, pw2);
309 error:
310 FN(PW,free)(pw1);
311 FN(PW,free)(pw2);
312 return NULL;
313 }
314
315 static __isl_give PW *FN(PW,align_params_pw_set_and)(__isl_take PW *pw,
316 __isl_take isl_set *set,
317 __isl_give PW *(*fn)(__isl_take PW *pw, __isl_take isl_set *set))
318 {
319 isl_ctx *ctx;
320
321 if (!pw || !set)
322 goto error;
323 if (isl_space_match(pw->dim, isl_dim_param, set->dim, isl_dim_param))
324 return fn(pw, set);
325 ctx = FN(PW,get_ctx)(pw);
326 if (!isl_space_has_named_params(pw->dim) ||
327 !isl_space_has_named_params(set->dim))
328 isl_die(ctx, isl_error_invalid,
329 "unaligned unnamed parameters", goto error);
330 pw = FN(PW,align_params)(pw, isl_set_get_space(set));
331 set = isl_set_align_params(set, FN(PW,get_space)(pw));
332 return fn(pw, set);
333 error:
334 FN(PW,free)(pw);
335 isl_set_free(set);
336 return NULL;
337 }
338 #endif
339
340 static __isl_give PW *FN(PW,union_add_aligned)(__isl_take PW *pw1,
341 __isl_take PW *pw2)
342 {
343 int i, j, n;
344 struct PW *res;
345 isl_ctx *ctx;
346 isl_set *set;
347
348 if (!pw1 || !pw2)
349 goto error;
350
351 ctx = isl_space_get_ctx(pw1->dim);
352 #ifdef HAS_TYPE
353 if (pw1->type != pw2->type)
354 isl_die(ctx, isl_error_invalid,
355 "fold types don't match", goto error);
356 #endif
357 isl_assert(ctx, isl_space_is_equal(pw1->dim, pw2->dim), goto error);
358
359 if (FN(PW,IS_ZERO)(pw1)) {
360 FN(PW,free)(pw1);
361 return pw2;
362 }
363
364 if (FN(PW,IS_ZERO)(pw2)) {
365 FN(PW,free)(pw2);
366 return pw1;
367 }
368
369 n = (pw1->n + 1) * (pw2->n + 1);
370 #ifdef HAS_TYPE
371 res = FN(PW,alloc_size)(isl_space_copy(pw1->dim), pw1->type, n);
372 #else
373 res = FN(PW,alloc_size)(isl_space_copy(pw1->dim), n);
374 #endif
375
376 for (i = 0; i < pw1->n; ++i) {
377 set = isl_set_copy(pw1->p[i].set);
378 for (j = 0; j < pw2->n; ++j) {
379 struct isl_set *common;
380 EL *sum;
381 common = isl_set_intersect(isl_set_copy(pw1->p[i].set),
382 isl_set_copy(pw2->p[j].set));
383 if (isl_set_plain_is_empty(common)) {
384 isl_set_free(common);
385 continue;
386 }
387 set = isl_set_subtract(set,
388 isl_set_copy(pw2->p[j].set));
389
390 sum = FN(EL,add_on_domain)(common,
391 FN(EL,copy)(pw1->p[i].FIELD),
392 FN(EL,copy)(pw2->p[j].FIELD));
393
394 res = FN(PW,add_piece)(res, common, sum);
395 }
396 res = FN(PW,add_piece)(res, set, FN(EL,copy)(pw1->p[i].FIELD));
397 }
398
399 for (j = 0; j < pw2->n; ++j) {
400 set = isl_set_copy(pw2->p[j].set);
401 for (i = 0; i < pw1->n; ++i)
402 set = isl_set_subtract(set,
403 isl_set_copy(pw1->p[i].set));
404 res = FN(PW,add_piece)(res, set, FN(EL,copy)(pw2->p[j].FIELD));
405 }
406
407 FN(PW,free)(pw1);
408 FN(PW,free)(pw2);
409
410 return res;
411 error:
412 FN(PW,free)(pw1);
413 FN(PW,free)(pw2);
414 return NULL;
415 }
416
417 /* Private version of "union_add". For isl_pw_qpolynomial and
418 * isl_pw_qpolynomial_fold, we prefer to simply call it "add".
419 */
420 static __isl_give PW *FN(PW,union_add_)(__isl_take PW *pw1, __isl_take PW *pw2)
421 {
422 return FN(PW,align_params_pw_pw_and)(pw1, pw2,
423 &FN(PW,union_add_aligned));
424 }
425
426 /* Make sure "pw" has room for at least "n" more pieces.
427 *
428 * If there is only one reference to pw, we extend it in place.
429 * Otherwise, we create a new PW and copy the pieces.
430 */
431 static __isl_give PW *FN(PW,grow)(__isl_take PW *pw, int n)
432 {
433 int i;
434 isl_ctx *ctx;
435 PW *res;
436
437 if (!pw)
438 return NULL;
439 if (pw->n + n <= pw->size)
440 return pw;
441 ctx = FN(PW,get_ctx)(pw);
442 n += pw->n;
443 if (pw->ref == 1) {
444 res = isl_realloc(ctx, pw, struct PW,
445 sizeof(struct PW) + (n - 1) * sizeof(S(PW,piece)));
446 if (!res)
447 return FN(PW,free)(pw);
448 res->size = n;
449 return res;
450 }
451 #ifdef HAS_TYPE
452 res = FN(PW,alloc_size)(isl_space_copy(pw->dim), pw->type, n);
453 #else
454 res = FN(PW,alloc_size)(isl_space_copy(pw->dim), n);
455 #endif
456 if (!res)
457 return FN(PW,free)(pw);
458 for (i = 0; i < pw->n; ++i)
459 res = FN(PW,add_piece)(res, isl_set_copy(pw->p[i].set),
460 FN(EL,copy)(pw->p[i].FIELD));
461 FN(PW,free)(pw);
462 return res;
463 }
464
465 static __isl_give PW *FN(PW,add_disjoint_aligned)(__isl_take PW *pw1,
466 __isl_take PW *pw2)
467 {
468 int i;
469 isl_ctx *ctx;
470
471 if (!pw1 || !pw2)
472 goto error;
473
474 if (pw1->size < pw1->n + pw2->n && pw1->n < pw2->n)
475 return FN(PW,add_disjoint_aligned)(pw2, pw1);
476
477 ctx = isl_space_get_ctx(pw1->dim);
478 #ifdef HAS_TYPE
479 if (pw1->type != pw2->type)
480 isl_die(ctx, isl_error_invalid,
481 "fold types don't match", goto error);
482 #endif
483 isl_assert(ctx, isl_space_is_equal(pw1->dim, pw2->dim), goto error);
484
485 if (FN(PW,IS_ZERO)(pw1)) {
486 FN(PW,free)(pw1);
487 return pw2;
488 }
489
490 if (FN(PW,IS_ZERO)(pw2)) {
491 FN(PW,free)(pw2);
492 return pw1;
493 }
494
495 pw1 = FN(PW,grow)(pw1, pw2->n);
496 if (!pw1)
497 goto error;
498
499 for (i = 0; i < pw2->n; ++i)
500 pw1 = FN(PW,add_piece)(pw1,
501 isl_set_copy(pw2->p[i].set),
502 FN(EL,copy)(pw2->p[i].FIELD));
503
504 FN(PW,free)(pw2);
505
506 return pw1;
507 error:
508 FN(PW,free)(pw1);
509 FN(PW,free)(pw2);
510 return NULL;
511 }
512
513 __isl_give PW *FN(PW,add_disjoint)(__isl_take PW *pw1, __isl_take PW *pw2)
514 {
515 return FN(PW,align_params_pw_pw_and)(pw1, pw2,
516 &FN(PW,add_disjoint_aligned));
517 }
518
519 /* This function is currently only used from isl_aff.c
520 */
521 static __isl_give PW *FN(PW,on_shared_domain_in)(__isl_take PW *pw1,
522 __isl_take PW *pw2, __isl_take isl_space *space,
523 __isl_give EL *(*fn)(__isl_take EL *el1, __isl_take EL *el2))
524 __attribute__ ((unused));
525
526 /* Apply "fn" to pairs of elements from pw1 and pw2 on shared domains.
527 * The result of "fn" (and therefore also of this function) lives in "space".
528 */
529 static __isl_give PW *FN(PW,on_shared_domain_in)(__isl_take PW *pw1,
530 __isl_take PW *pw2, __isl_take isl_space *space,
531 __isl_give EL *(*fn)(__isl_take EL *el1, __isl_take EL *el2))
532 {
533 int i, j, n;
534 PW *res = NULL;
535
536 if (!pw1 || !pw2)
537 goto error;
538
539 n = pw1->n * pw2->n;
540 #ifdef HAS_TYPE
541 res = FN(PW,alloc_size)(space, pw1->type, n);
542 #else
543 res = FN(PW,alloc_size)(space, n);
544 #endif
545
546 for (i = 0; i < pw1->n; ++i) {
547 for (j = 0; j < pw2->n; ++j) {
548 isl_set *common;
549 EL *res_ij;
550 int empty;
551
552 common = isl_set_intersect(
553 isl_set_copy(pw1->p[i].set),
554 isl_set_copy(pw2->p[j].set));
555 empty = isl_set_plain_is_empty(common);
556 if (empty < 0 || empty) {
557 isl_set_free(common);
558 if (empty < 0)
559 goto error;
560 continue;
561 }
562
563 res_ij = fn(FN(EL,copy)(pw1->p[i].FIELD),
564 FN(EL,copy)(pw2->p[j].FIELD));
565 res_ij = FN(EL,gist)(res_ij, isl_set_copy(common));
566
567 res = FN(PW,add_piece)(res, common, res_ij);
568 }
569 }
570
571 FN(PW,free)(pw1);
572 FN(PW,free)(pw2);
573 return res;
574 error:
575 isl_space_free(space);
576 FN(PW,free)(pw1);
577 FN(PW,free)(pw2);
578 FN(PW,free)(res);
579 return NULL;
580 }
581
582 /* This function is currently only used from isl_aff.c
583 */
584 static __isl_give PW *FN(PW,on_shared_domain)(__isl_take PW *pw1,
585 __isl_take PW *pw2,
586 __isl_give EL *(*fn)(__isl_take EL *el1, __isl_take EL *el2))
587 __attribute__ ((unused));
588
589 /* Apply "fn" to pairs of elements from pw1 and pw2 on shared domains.
590 * The result of "fn" is assumed to live in the same space as "pw1" and "pw2".
591 */
592 static __isl_give PW *FN(PW,on_shared_domain)(__isl_take PW *pw1,
593 __isl_take PW *pw2,
594 __isl_give EL *(*fn)(__isl_take EL *el1, __isl_take EL *el2))
595 {
596 isl_space *space;
597
598 if (!pw1 || !pw2)
599 goto error;
600
601 space = isl_space_copy(pw1->dim);
602 return FN(PW,on_shared_domain_in)(pw1, pw2, space, fn);
603 error:
604 FN(PW,free)(pw1);
605 FN(PW,free)(pw2);
606 return NULL;
607 }
608
609 #ifndef NO_NEG
610 __isl_give PW *FN(PW,neg)(__isl_take PW *pw)
611 {
612 int i;
613
614 if (!pw)
615 return NULL;
616
617 if (FN(PW,IS_ZERO)(pw))
618 return pw;
619
620 pw = FN(PW,cow)(pw);
621 if (!pw)
622 return NULL;
623
624 for (i = 0; i < pw->n; ++i) {
625 pw->p[i].FIELD = FN(EL,neg)(pw->p[i].FIELD);
626 if (!pw->p[i].FIELD)
627 return FN(PW,free)(pw);
628 }
629
630 return pw;
631 }
632
633 __isl_give PW *FN(PW,sub)(__isl_take PW *pw1, __isl_take PW *pw2)
634 {
635 return FN(PW,add)(pw1, FN(PW,neg)(pw2));
636 }
637 #endif
638
639 #ifndef NO_EVAL
640 __isl_give isl_qpolynomial *FN(PW,eval)(__isl_take PW *pw,
641 __isl_take isl_point *pnt)
642 {
643 int i;
644 int found = 0;
645 isl_ctx *ctx;
646 isl_space *pnt_dim = NULL;
647 isl_qpolynomial *qp;
648
649 if (!pw || !pnt)
650 goto error;
651 ctx = isl_point_get_ctx(pnt);
652 pnt_dim = isl_point_get_space(pnt);
653 isl_assert(ctx, isl_space_is_domain_internal(pnt_dim, pw->dim),
654 goto error);
655
656 for (i = 0; i < pw->n; ++i) {
657 found = isl_set_contains_point(pw->p[i].set, pnt);
658 if (found < 0)
659 goto error;
660 if (found)
661 break;
662 }
663 if (found)
664 qp = FN(EL,eval)(FN(EL,copy)(pw->p[i].FIELD),
665 isl_point_copy(pnt));
666 else
667 qp = isl_qpolynomial_zero_on_domain(FN(PW,get_domain_space)(pw));
668 FN(PW,free)(pw);
669 isl_space_free(pnt_dim);
670 isl_point_free(pnt);
671 return qp;
672 error:
673 FN(PW,free)(pw);
674 isl_space_free(pnt_dim);
675 isl_point_free(pnt);
676 return NULL;
677 }
678 #endif
679
680 __isl_give isl_set *FN(PW,domain)(__isl_take PW *pw)
681 {
682 int i;
683 isl_set *dom;
684
685 if (!pw)
686 return NULL;
687
688 dom = isl_set_empty(FN(PW,get_domain_space)(pw));
689 for (i = 0; i < pw->n; ++i)
690 dom = isl_set_union_disjoint(dom, isl_set_copy(pw->p[i].set));
691
692 FN(PW,free)(pw);
693
694 return dom;
695 }
696
697 /* Restrict the domain of "pw" by combining each cell
698 * with "set" through a call to "fn", where "fn" may be
699 * isl_set_intersect or isl_set_intersect_params.
700 */
701 static __isl_give PW *FN(PW,intersect_aligned)(__isl_take PW *pw,
702 __isl_take isl_set *set,
703 __isl_give isl_set *(*fn)(__isl_take isl_set *set1,
704 __isl_take isl_set *set2))
705 {
706 int i;
707
708 if (!pw || !set)
709 goto error;
710
711 if (pw->n == 0) {
712 isl_set_free(set);
713 return pw;
714 }
715
716 pw = FN(PW,cow)(pw);
717 if (!pw)
718 goto error;
719
720 for (i = pw->n - 1; i >= 0; --i) {
721 isl_basic_set *aff;
722 pw->p[i].set = fn(pw->p[i].set, isl_set_copy(set));
723 if (!pw->p[i].set)
724 goto error;
725 aff = isl_set_affine_hull(isl_set_copy(pw->p[i].set));
726 pw->p[i].FIELD = FN(EL,substitute_equalities)(pw->p[i].FIELD,
727 aff);
728 if (!pw->p[i].FIELD)
729 goto error;
730 if (isl_set_plain_is_empty(pw->p[i].set)) {
731 isl_set_free(pw->p[i].set);
732 FN(EL,free)(pw->p[i].FIELD);
733 if (i != pw->n - 1)
734 pw->p[i] = pw->p[pw->n - 1];
735 pw->n--;
736 }
737 }
738
739 isl_set_free(set);
740 return pw;
741 error:
742 isl_set_free(set);
743 FN(PW,free)(pw);
744 return NULL;
745 }
746
747 static __isl_give PW *FN(PW,intersect_domain_aligned)(__isl_take PW *pw,
748 __isl_take isl_set *set)
749 {
750 return FN(PW,intersect_aligned)(pw, set, &isl_set_intersect);
751 }
752
753 __isl_give PW *FN(PW,intersect_domain)(__isl_take PW *pw,
754 __isl_take isl_set *context)
755 {
756 return FN(PW,align_params_pw_set_and)(pw, context,
757 &FN(PW,intersect_domain_aligned));
758 }
759
760 static __isl_give PW *FN(PW,intersect_params_aligned)(__isl_take PW *pw,
761 __isl_take isl_set *set)
762 {
763 return FN(PW,intersect_aligned)(pw, set, &isl_set_intersect_params);
764 }
765
766 /* Intersect the domain of "pw" with the parameter domain "context".
767 */
768 __isl_give PW *FN(PW,intersect_params)(__isl_take PW *pw,
769 __isl_take isl_set *context)
770 {
771 return FN(PW,align_params_pw_set_and)(pw, context,
772 &FN(PW,intersect_params_aligned));
773 }
774
775 static __isl_give PW *FN(PW,gist_aligned)(__isl_take PW *pw,
776 __isl_take isl_set *context,
777 __isl_give EL *(*fn_el)(__isl_take EL *el,
778 __isl_take isl_set *set),
779 __isl_give isl_set *(*fn_dom)(__isl_take isl_set *set,
780 __isl_take isl_basic_set *bset))
781 {
782 int i;
783 isl_basic_set *hull = NULL;
784
785 if (!pw || !context)
786 goto error;
787
788 if (pw->n == 0) {
789 isl_set_free(context);
790 return pw;
791 }
792
793 if (!isl_space_match(pw->dim, isl_dim_param,
794 context->dim, isl_dim_param)) {
795 pw = FN(PW,align_params)(pw, isl_set_get_space(context));
796 context = isl_set_align_params(context, FN(PW,get_space)(pw));
797 }
798
799 context = isl_set_compute_divs(context);
800 hull = isl_set_simple_hull(isl_set_copy(context));
801
802 pw = FN(PW,cow)(pw);
803 if (!pw)
804 goto error;
805
806 for (i = pw->n - 1; i >= 0; --i) {
807 isl_set *set_i;
808 int empty;
809
810 set_i = isl_set_intersect(isl_set_copy(pw->p[i].set),
811 isl_set_copy(context));
812 empty = isl_set_plain_is_empty(set_i);
813 pw->p[i].FIELD = fn_el(pw->p[i].FIELD, set_i);
814 pw->p[i].set = fn_dom(pw->p[i].set, isl_basic_set_copy(hull));
815 if (!pw->p[i].FIELD || !pw->p[i].set)
816 goto error;
817 if (empty) {
818 isl_set_free(pw->p[i].set);
819 FN(EL,free)(pw->p[i].FIELD);
820 if (i != pw->n - 1)
821 pw->p[i] = pw->p[pw->n - 1];
822 pw->n--;
823 }
824 }
825
826 isl_basic_set_free(hull);
827 isl_set_free(context);
828
829 return pw;
830 error:
831 FN(PW,free)(pw);
832 isl_basic_set_free(hull);
833 isl_set_free(context);
834 return NULL;
835 }
836
837 static __isl_give PW *FN(PW,gist_domain_aligned)(__isl_take PW *pw,
838 __isl_take isl_set *set)
839 {
840 return FN(PW,gist_aligned)(pw, set, &FN(EL,gist),
841 &isl_set_gist_basic_set);
842 }
843
844 __isl_give PW *FN(PW,gist)(__isl_take PW *pw, __isl_take isl_set *context)
845 {
846 return FN(PW,align_params_pw_set_and)(pw, context,
847 &FN(PW,gist_domain_aligned));
848 }
849
850 static __isl_give PW *FN(PW,gist_params_aligned)(__isl_take PW *pw,
851 __isl_take isl_set *set)
852 {
853 return FN(PW,gist_aligned)(pw, set, &FN(EL,gist_params),
854 &isl_set_gist_params_basic_set);
855 }
856
857 __isl_give PW *FN(PW,gist_params)(__isl_take PW *pw,
858 __isl_take isl_set *context)
859 {
860 return FN(PW,align_params_pw_set_and)(pw, context,
861 &FN(PW,gist_params_aligned));
862 }
863
864 __isl_give PW *FN(PW,coalesce)(__isl_take PW *pw)
865 {
866 int i, j;
867
868 if (!pw)
869 return NULL;
870 if (pw->n == 0)
871 return pw;
872
873 for (i = pw->n - 1; i >= 0; --i) {
874 for (j = i - 1; j >= 0; --j) {
875 if (!FN(EL,plain_is_equal)(pw->p[i].FIELD,
876 pw->p[j].FIELD))
877 continue;
878 pw->p[j].set = isl_set_union(pw->p[j].set,
879 pw->p[i].set);
880 FN(EL,free)(pw->p[i].FIELD);
881 if (i != pw->n - 1)
882 pw->p[i] = pw->p[pw->n - 1];
883 pw->n--;
884 break;
885 }
886 if (j >= 0)
887 continue;
888 pw->p[i].set = isl_set_coalesce(pw->p[i].set);
889 if (!pw->p[i].set)
890 goto error;
891 }
892
893 return pw;
894 error:
895 FN(PW,free)(pw);
896 return NULL;
897 }
898
899 isl_ctx *FN(PW,get_ctx)(__isl_keep PW *pw)
900 {
901 return pw ? isl_space_get_ctx(pw->dim) : NULL;
902 }
903
904 #ifndef NO_INVOLVES_DIMS
905 int FN(PW,involves_dims)(__isl_keep PW *pw, enum isl_dim_type type,
906 unsigned first, unsigned n)
907 {
908 int i;
909 enum isl_dim_type set_type;
910
911 if (!pw)
912 return -1;
913 if (pw->n == 0 || n == 0)
914 return 0;
915
916 set_type = type == isl_dim_in ? isl_dim_set : type;
917
918 for (i = 0; i < pw->n; ++i) {
919 int involves = FN(EL,involves_dims)(pw->p[i].FIELD,
920 type, first, n);
921 if (involves < 0 || involves)
922 return involves;
923 involves = isl_set_involves_dims(pw->p[i].set,
924 set_type, first, n);
925 if (involves < 0 || involves)
926 return involves;
927 }
928 return 0;
929 }
930 #endif
931
932 __isl_give PW *FN(PW,set_dim_name)(__isl_take PW *pw,
933 enum isl_dim_type type, unsigned pos, const char *s)
934 {
935 int i;
936 enum isl_dim_type set_type;
937
938 pw = FN(PW,cow)(pw);
939 if (!pw)
940 return NULL;
941
942 set_type = type == isl_dim_in ? isl_dim_set : type;
943
944 pw->dim = isl_space_set_dim_name(pw->dim, type, pos, s);
945 if (!pw->dim)
946 goto error;
947
948 for (i = 0; i < pw->n; ++i) {
949 pw->p[i].set = isl_set_set_dim_name(pw->p[i].set,
950 set_type, pos, s);
951 if (!pw->p[i].set)
952 goto error;
953 pw->p[i].FIELD = FN(EL,set_dim_name)(pw->p[i].FIELD, type, pos, s);
954 if (!pw->p[i].FIELD)
955 goto error;
956 }
957
958 return pw;
959 error:
960 FN(PW,free)(pw);
961 return NULL;
962 }
963
964 #ifndef NO_DROP_DIMS
965 __isl_give PW *FN(PW,drop_dims)(__isl_take PW *pw,
966 enum isl_dim_type type, unsigned first, unsigned n)
967 {
968 int i;
969 enum isl_dim_type set_type;
970
971 if (!pw)
972 return NULL;
973 if (n == 0 && !isl_space_get_tuple_name(pw->dim, type))
974 return pw;
975
976 set_type = type == isl_dim_in ? isl_dim_set : type;
977
978 pw = FN(PW,cow)(pw);
979 if (!pw)
980 return NULL;
981 pw->dim = isl_space_drop_dims(pw->dim, type, first, n);
982 if (!pw->dim)
983 goto error;
984 for (i = 0; i < pw->n; ++i) {
985 pw->p[i].set = isl_set_drop(pw->p[i].set, set_type, first, n);
986 if (!pw->p[i].set)
987 goto error;
988 pw->p[i].FIELD = FN(EL,drop_dims)(pw->p[i].FIELD, type, first, n);
989 if (!pw->p[i].FIELD)
990 goto error;
991 }
992
993 return pw;
994 error:
995 FN(PW,free)(pw);
996 return NULL;
997 }
998
999 /* This function is very similar to drop_dims.
1000 * The only difference is that the cells may still involve
1001 * the specified dimensions. They are removed using
1002 * isl_set_project_out instead of isl_set_drop.
1003 */
1004 __isl_give PW *FN(PW,project_out)(__isl_take PW *pw,
1005 enum isl_dim_type type, unsigned first, unsigned n)
1006 {
1007 int i;
1008 enum isl_dim_type set_type;
1009
1010 if (!pw)
1011 return NULL;
1012 if (n == 0 && !isl_space_get_tuple_name(pw->dim, type))
1013 return pw;
1014
1015 set_type = type == isl_dim_in ? isl_dim_set : type;
1016
1017 pw = FN(PW,cow)(pw);
1018 if (!pw)
1019 return NULL;
1020 pw->dim = isl_space_drop_dims(pw->dim, type, first, n);
1021 if (!pw->dim)
1022 goto error;
1023 for (i = 0; i < pw->n; ++i) {
1024 pw->p[i].set = isl_set_project_out(pw->p[i].set,
1025 set_type, first, n);
1026 if (!pw->p[i].set)
1027 goto error;
1028 pw->p[i].FIELD = FN(EL,drop_dims)(pw->p[i].FIELD, type, first, n);
1029 if (!pw->p[i].FIELD)
1030 goto error;
1031 }
1032
1033 return pw;
1034 error:
1035 FN(PW,free)(pw);
1036 return NULL;
1037 }
1038
1039 /* Project the domain of pw onto its parameter space.
1040 */
1041 __isl_give PW *FN(PW,project_domain_on_params)(__isl_take PW *pw)
1042 {
1043 isl_space *space;
1044 unsigned n;
1045
1046 n = FN(PW,dim)(pw, isl_dim_in);
1047 pw = FN(PW,project_out)(pw, isl_dim_in, 0, n);
1048 space = FN(PW,get_domain_space)(pw);
1049 space = isl_space_params(space);
1050 pw = FN(PW,reset_domain_space)(pw, space);
1051 return pw;
1052 }
1053 #endif
1054
1055 #ifndef NO_INSERT_DIMS
1056 __isl_give PW *FN(PW,insert_dims)(__isl_take PW *pw, enum isl_dim_type type,
1057 unsigned first, unsigned n)
1058 {
1059 int i;
1060 enum isl_dim_type set_type;
1061
1062 if (!pw)
1063 return NULL;
1064 if (n == 0 && !isl_space_is_named_or_nested(pw->dim, type))
1065 return pw;
1066
1067 set_type = type == isl_dim_in ? isl_dim_set : type;
1068
1069 pw = FN(PW,cow)(pw);
1070 if (!pw)
1071 return NULL;
1072
1073 pw->dim = isl_space_insert_dims(pw->dim, type, first, n);
1074 if (!pw->dim)
1075 goto error;
1076
1077 for (i = 0; i < pw->n; ++i) {
1078 pw->p[i].set = isl_set_insert_dims(pw->p[i].set,
1079 set_type, first, n);
1080 if (!pw->p[i].set)
1081 goto error;
1082 pw->p[i].FIELD = FN(EL,insert_dims)(pw->p[i].FIELD,
1083 type, first, n);
1084 if (!pw->p[i].FIELD)
1085 goto error;
1086 }
1087
1088 return pw;
1089 error:
1090 FN(PW,free)(pw);
1091 return NULL;
1092 }
1093 #endif
1094
1095 __isl_give PW *FN(PW,fix_dim)(__isl_take PW *pw,
1096 enum isl_dim_type type, unsigned pos, isl_int v)
1097 {
1098 int i;
1099
1100 if (!pw)
1101 return NULL;
1102
1103 if (type == isl_dim_in)
1104 type = isl_dim_set;
1105
1106 pw = FN(PW,cow)(pw);
1107 if (!pw)
1108 return NULL;
1109 for (i = 0; i < pw->n; ++i) {
1110 pw->p[i].set = isl_set_fix(pw->p[i].set, type, pos, v);
1111 if (!pw->p[i].set)
1112 goto error;
1113 }
1114
1115 return pw;
1116 error:
1117 FN(PW,free)(pw);
1118 return NULL;
1119 }
1120
1121 unsigned FN(PW,dim)(__isl_keep PW *pw, enum isl_dim_type type)
1122 {
1123 return pw ? isl_space_dim(pw->dim, type) : 0;
1124 }
1125
1126 __isl_give PW *FN(PW,split_dims)(__isl_take PW *pw,
1127 enum isl_dim_type type, unsigned first, unsigned n)
1128 {
1129 int i;
1130
1131 if (!pw)
1132 return NULL;
1133 if (n == 0)
1134 return pw;
1135
1136 if (type == isl_dim_in)
1137 type = isl_dim_set;
1138
1139 pw = FN(PW,cow)(pw);
1140 if (!pw)
1141 return NULL;
1142 if (!pw->dim)
1143 goto error;
1144 for (i = 0; i < pw->n; ++i) {
1145 pw->p[i].set = isl_set_split_dims(pw->p[i].set, type, first, n);
1146 if (!pw->p[i].set)
1147 goto error;
1148 }
1149
1150 return pw;
1151 error:
1152 FN(PW,free)(pw);
1153 return NULL;
1154 }
1155
1156 #ifndef NO_OPT
1157 /* Compute the maximal value attained by the piecewise quasipolynomial
1158 * on its domain or zero if the domain is empty.
1159 * In the worst case, the domain is scanned completely,
1160 * so the domain is assumed to be bounded.
1161 */
1162 __isl_give isl_qpolynomial *FN(PW,opt)(__isl_take PW *pw, int max)
1163 {
1164 int i;
1165 isl_qpolynomial *opt;
1166
1167 if (!pw)
1168 return NULL;
1169
1170 if (pw->n == 0) {
1171 isl_space *dim = isl_space_copy(pw->dim);
1172 FN(PW,free)(pw);
1173 return isl_qpolynomial_zero_on_domain(isl_space_domain(dim));
1174 }
1175
1176 opt = FN(EL,opt_on_domain)(FN(EL,copy)(pw->p[0].FIELD),
1177 isl_set_copy(pw->p[0].set), max);
1178 for (i = 1; i < pw->n; ++i) {
1179 isl_qpolynomial *opt_i;
1180 opt_i = FN(EL,opt_on_domain)(FN(EL,copy)(pw->p[i].FIELD),
1181 isl_set_copy(pw->p[i].set), max);
1182 if (max)
1183 opt = isl_qpolynomial_max_cst(opt, opt_i);
1184 else
1185 opt = isl_qpolynomial_min_cst(opt, opt_i);
1186 }
1187
1188 FN(PW,free)(pw);
1189 return opt;
1190 }
1191
1192 __isl_give isl_qpolynomial *FN(PW,max)(__isl_take PW *pw)
1193 {
1194 return FN(PW,opt)(pw, 1);
1195 }
1196
1197 __isl_give isl_qpolynomial *FN(PW,min)(__isl_take PW *pw)
1198 {
1199 return FN(PW,opt)(pw, 0);
1200 }
1201 #endif
1202
1203 __isl_give isl_space *FN(PW,get_space)(__isl_keep PW *pw)
1204 {
1205 return pw ? isl_space_copy(pw->dim) : NULL;
1206 }
1207
1208 __isl_give isl_space *FN(PW,get_domain_space)(__isl_keep PW *pw)
1209 {
1210 return pw ? isl_space_domain(isl_space_copy(pw->dim)) : NULL;
1211 }
1212
1213 #ifndef NO_RESET_DIM
1214 /* Reset the space of "pw". Since we don't know if the elements
1215 * represent the spaces themselves or their domains, we pass along
1216 * both when we call their reset_space_and_domain.
1217 */
1218 static __isl_give PW *FN(PW,reset_space_and_domain)(__isl_take PW *pw,
1219 __isl_take isl_space *space, __isl_take isl_space *domain)
1220 {
1221 int i;
1222
1223 pw = FN(PW,cow)(pw);
1224 if (!pw || !space || !domain)
1225 goto error;
1226
1227 for (i = 0; i < pw->n; ++i) {
1228 pw->p[i].set = isl_set_reset_space(pw->p[i].set,
1229 isl_space_copy(domain));
1230 if (!pw->p[i].set)
1231 goto error;
1232 pw->p[i].FIELD = FN(EL,reset_space_and_domain)(pw->p[i].FIELD,
1233 isl_space_copy(space), isl_space_copy(domain));
1234 if (!pw->p[i].FIELD)
1235 goto error;
1236 }
1237
1238 isl_space_free(domain);
1239
1240 isl_space_free(pw->dim);
1241 pw->dim = space;
1242
1243 return pw;
1244 error:
1245 isl_space_free(domain);
1246 isl_space_free(space);
1247 FN(PW,free)(pw);
1248 return NULL;
1249 }
1250
1251 __isl_give PW *FN(PW,reset_domain_space)(__isl_take PW *pw,
1252 __isl_take isl_space *domain)
1253 {
1254 isl_space *space;
1255
1256 space = isl_space_extend_domain_with_range(isl_space_copy(domain),
1257 FN(PW,get_space)(pw));
1258 return FN(PW,reset_space_and_domain)(pw, space, domain);
1259 }
1260
1261 __isl_give PW *FN(PW,reset_space)(__isl_take PW *pw, __isl_take isl_space *dim)
1262 {
1263 isl_space *domain;
1264
1265 domain = isl_space_domain(isl_space_copy(dim));
1266 return FN(PW,reset_space_and_domain)(pw, dim, domain);
1267 }
1268
1269 __isl_give PW *FN(PW,set_tuple_id)(__isl_keep PW *pw, enum isl_dim_type type,
1270 __isl_take isl_id *id)
1271 {
1272 isl_space *space;
1273
1274 pw = FN(PW,cow)(pw);
1275 if (!pw)
1276 return isl_id_free(id);
1277
1278 space = FN(PW,get_space)(pw);
1279 space = isl_space_set_tuple_id(space, type, id);
1280
1281 return FN(PW,reset_space)(pw, space);
1282 }
1283
1284 __isl_give PW *FN(PW,set_dim_id)(__isl_take PW *pw,
1285 enum isl_dim_type type, unsigned pos, __isl_take isl_id *id)
1286 {
1287 pw = FN(PW,cow)(pw);
1288 if (!pw)
1289 return isl_id_free(id);
1290 pw->dim = isl_space_set_dim_id(pw->dim, type, pos, id);
1291 return FN(PW,reset_space)(pw, isl_space_copy(pw->dim));
1292 }
1293 #endif
1294
1295 int FN(PW,has_equal_space)(__isl_keep PW *pw1, __isl_keep PW *pw2)
1296 {
1297 if (!pw1 || !pw2)
1298 return -1;
1299
1300 return isl_space_is_equal(pw1->dim, pw2->dim);
1301 }
1302
1303 #ifndef NO_MORPH
1304 __isl_give PW *FN(PW,morph_domain)(__isl_take PW *pw,
1305 __isl_take isl_morph *morph)
1306 {
1307 int i;
1308 isl_ctx *ctx;
1309
1310 if (!pw || !morph)
1311 goto error;
1312
1313 ctx = isl_space_get_ctx(pw->dim);
1314 isl_assert(ctx, isl_space_is_domain_internal(morph->dom->dim, pw->dim),
1315 goto error);
1316
1317 pw = FN(PW,cow)(pw);
1318 if (!pw)
1319 goto error;
1320 pw->dim = isl_space_extend_domain_with_range(
1321 isl_space_copy(morph->ran->dim), pw->dim);
1322 if (!pw->dim)
1323 goto error;
1324
1325 for (i = 0; i < pw->n; ++i) {
1326 pw->p[i].set = isl_morph_set(isl_morph_copy(morph), pw->p[i].set);
1327 if (!pw->p[i].set)
1328 goto error;
1329 pw->p[i].FIELD = FN(EL,morph_domain)(pw->p[i].FIELD,
1330 isl_morph_copy(morph));
1331 if (!pw->p[i].FIELD)
1332 goto error;
1333 }
1334
1335 isl_morph_free(morph);
1336
1337 return pw;
1338 error:
1339 FN(PW,free)(pw);
1340 isl_morph_free(morph);
1341 return NULL;
1342 }
1343 #endif
1344
1345 int FN(PW,n_piece)(__isl_keep PW *pw)
1346 {
1347 return pw ? pw->n : 0;
1348 }
1349
1350 int FN(PW,foreach_piece)(__isl_keep PW *pw,
1351 int (*fn)(__isl_take isl_set *set, __isl_take EL *el, void *user),
1352 void *user)
1353 {
1354 int i;
1355
1356 if (!pw)
1357 return -1;
1358
1359 for (i = 0; i < pw->n; ++i)
1360 if (fn(isl_set_copy(pw->p[i].set),
1361 FN(EL,copy)(pw->p[i].FIELD), user) < 0)
1362 return -1;
1363
1364 return 0;
1365 }
1366
1367 #ifndef NO_LIFT
1368 static int any_divs(__isl_keep isl_set *set)
1369 {
1370 int i;
1371
1372 if (!set)
1373 return -1;
1374
1375 for (i = 0; i < set->n; ++i)
1376 if (set->p[i]->n_div > 0)
1377 return 1;
1378
1379 return 0;
1380 }
1381
1382 static int foreach_lifted_subset(__isl_take isl_set *set, __isl_take EL *el,
1383 int (*fn)(__isl_take isl_set *set, __isl_take EL *el,
1384 void *user), void *user)
1385 {
1386 int i;
1387
1388 if (!set || !el)
1389 goto error;
1390
1391 for (i = 0; i < set->n; ++i) {
1392 isl_set *lift;
1393 EL *copy;
1394
1395 lift = isl_set_from_basic_set(isl_basic_set_copy(set->p[i]));
1396 lift = isl_set_lift(lift);
1397
1398 copy = FN(EL,copy)(el);
1399 copy = FN(EL,lift)(copy, isl_set_get_space(lift));
1400
1401 if (fn(lift, copy, user) < 0)
1402 goto error;
1403 }
1404
1405 isl_set_free(set);
1406 FN(EL,free)(el);
1407
1408 return 0;
1409 error:
1410 isl_set_free(set);
1411 FN(EL,free)(el);
1412 return -1;
1413 }
1414
1415 int FN(PW,foreach_lifted_piece)(__isl_keep PW *pw,
1416 int (*fn)(__isl_take isl_set *set, __isl_take EL *el,
1417 void *user), void *user)
1418 {
1419 int i;
1420
1421 if (!pw)
1422 return -1;
1423
1424 for (i = 0; i < pw->n; ++i) {
1425 isl_set *set;
1426 EL *el;
1427
1428 set = isl_set_copy(pw->p[i].set);
1429 el = FN(EL,copy)(pw->p[i].FIELD);
1430 if (!any_divs(set)) {
1431 if (fn(set, el, user) < 0)
1432 return -1;
1433 continue;
1434 }
1435 if (foreach_lifted_subset(set, el, fn, user) < 0)
1436 return -1;
1437 }
1438
1439 return 0;
1440 }
1441 #endif
1442
1443 #ifndef NO_MOVE_DIMS
1444 __isl_give PW *FN(PW,move_dims)(__isl_take PW *pw,
1445 enum isl_dim_type dst_type, unsigned dst_pos,
1446 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
1447 {
1448 int i;
1449
1450 pw = FN(PW,cow)(pw);
1451 if (!pw)
1452 return NULL;
1453
1454 pw->dim = isl_space_move_dims(pw->dim, dst_type, dst_pos, src_type, src_pos, n);
1455 if (!pw->dim)
1456 goto error;
1457
1458 for (i = 0; i < pw->n; ++i) {
1459 pw->p[i].FIELD = FN(EL,move_dims)(pw->p[i].FIELD,
1460 dst_type, dst_pos, src_type, src_pos, n);
1461 if (!pw->p[i].FIELD)
1462 goto error;
1463 }
1464
1465 if (dst_type == isl_dim_in)
1466 dst_type = isl_dim_set;
1467 if (src_type == isl_dim_in)
1468 src_type = isl_dim_set;
1469
1470 for (i = 0; i < pw->n; ++i) {
1471 pw->p[i].set = isl_set_move_dims(pw->p[i].set,
1472 dst_type, dst_pos,
1473 src_type, src_pos, n);
1474 if (!pw->p[i].set)
1475 goto error;
1476 }
1477
1478 return pw;
1479 error:
1480 FN(PW,free)(pw);
1481 return NULL;
1482 }
1483 #endif
1484
1485 __isl_give PW *FN(PW,mul_isl_int)(__isl_take PW *pw, isl_int v)
1486 {
1487 int i;
1488
1489 if (isl_int_is_one(v))
1490 return pw;
1491 if (pw && DEFAULT_IS_ZERO && isl_int_is_zero(v)) {
1492 PW *zero;
1493 isl_space *dim = FN(PW,get_space)(pw);
1494 #ifdef HAS_TYPE
1495 zero = FN(PW,ZERO)(dim, pw->type);
1496 #else
1497 zero = FN(PW,ZERO)(dim);
1498 #endif
1499 FN(PW,free)(pw);
1500 return zero;
1501 }
1502 pw = FN(PW,cow)(pw);
1503 if (!pw)
1504 return NULL;
1505 if (pw->n == 0)
1506 return pw;
1507
1508 #ifdef HAS_TYPE
1509 if (isl_int_is_neg(v))
1510 pw->type = isl_fold_type_negate(pw->type);
1511 #endif
1512 for (i = 0; i < pw->n; ++i) {
1513 pw->p[i].FIELD = FN(EL,scale)(pw->p[i].FIELD, v);
1514 if (!pw->p[i].FIELD)
1515 goto error;
1516 }
1517
1518 return pw;
1519 error:
1520 FN(PW,free)(pw);
1521 return NULL;
1522 }
1523
1524 __isl_give PW *FN(PW,scale)(__isl_take PW *pw, isl_int v)
1525 {
1526 return FN(PW,mul_isl_int)(pw, v);
1527 }
1528
1529 static int FN(PW,qsort_set_cmp)(const void *p1, const void *p2)
1530 {
1531 isl_set *set1 = *(isl_set * const *)p1;
1532 isl_set *set2 = *(isl_set * const *)p2;
1533
1534 return isl_set_plain_cmp(set1, set2);
1535 }
1536
1537 /* We normalize in place, but if anything goes wrong we need
1538 * to return NULL, so we need to make sure we don't change the
1539 * meaning of any possible other copies of map.
1540 */
1541 __isl_give PW *FN(PW,normalize)(__isl_take PW *pw)
1542 {
1543 int i, j;
1544 isl_set *set;
1545
1546 if (!pw)
1547 return NULL;
1548 for (i = 0; i < pw->n; ++i) {
1549 set = isl_set_normalize(isl_set_copy(pw->p[i].set));
1550 if (!set)
1551 return FN(PW,free)(pw);
1552 isl_set_free(pw->p[i].set);
1553 pw->p[i].set = set;
1554 }
1555 qsort(pw->p, pw->n, sizeof(pw->p[0]), &FN(PW,qsort_set_cmp));
1556 for (i = pw->n - 1; i >= 1; --i) {
1557 if (!isl_set_plain_is_equal(pw->p[i - 1].set, pw->p[i].set))
1558 continue;
1559 if (!FN(EL,plain_is_equal)(pw->p[i - 1].FIELD, pw->p[i].FIELD))
1560 continue;
1561 set = isl_set_union(isl_set_copy(pw->p[i - 1].set),
1562 isl_set_copy(pw->p[i].set));
1563 if (!set)
1564 return FN(PW,free)(pw);
1565 isl_set_free(pw->p[i].set);
1566 FN(EL,free)(pw->p[i].FIELD);
1567 isl_set_free(pw->p[i - 1].set);
1568 pw->p[i - 1].set = set;
1569 for (j = i + 1; j < pw->n; ++j)
1570 pw->p[j - 1] = pw->p[j];
1571 pw->n--;
1572 }
1573
1574 return pw;
1575 }
1576
1577 /* Is pw1 obviously equal to pw2?
1578 * That is, do they have obviously identical cells and obviously identical
1579 * elements on each cell?
1580 */
1581 int FN(PW,plain_is_equal)(__isl_keep PW *pw1, __isl_keep PW *pw2)
1582 {
1583 int i;
1584 int equal;
1585
1586 if (!pw1 || !pw2)
1587 return -1;
1588
1589 if (pw1 == pw2)
1590 return 1;
1591 if (!isl_space_is_equal(pw1->dim, pw2->dim))
1592 return 0;
1593
1594 pw1 = FN(PW,copy)(pw1);
1595 pw2 = FN(PW,copy)(pw2);
1596 pw1 = FN(PW,normalize)(pw1);
1597 pw2 = FN(PW,normalize)(pw2);
1598 if (!pw1 || !pw2)
1599 goto error;
1600
1601 equal = pw1->n == pw2->n;
1602 for (i = 0; equal && i < pw1->n; ++i) {
1603 equal = isl_set_plain_is_equal(pw1->p[i].set, pw2->p[i].set);
1604 if (equal < 0)
1605 goto error;
1606 if (!equal)
1607 break;
1608 equal = FN(EL,plain_is_equal)(pw1->p[i].FIELD, pw2->p[i].FIELD);
1609 if (equal < 0)
1610 goto error;
1611 }
1612
1613 FN(PW,free)(pw1);
1614 FN(PW,free)(pw2);
1615 return equal;
1616 error:
1617 FN(PW,free)(pw1);
1618 FN(PW,free)(pw2);
1619 return -1;
1620 }
1621
1622 #ifndef NO_PULLBACK
1623 static __isl_give PW *FN(PW,align_params_pw_multi_aff_and)(__isl_take PW *pw,
1624 __isl_take isl_multi_aff *ma,
1625 __isl_give PW *(*fn)(__isl_take PW *pw, __isl_take isl_multi_aff *ma))
1626 {
1627 isl_ctx *ctx;
1628 isl_space *ma_space;
1629
1630 ma_space = isl_multi_aff_get_space(ma);
1631 if (!pw || !ma || !ma_space)
1632 goto error;
1633 if (isl_space_match(pw->dim, isl_dim_param, ma_space, isl_dim_param)) {
1634 isl_space_free(ma_space);
1635 return fn(pw, ma);
1636 }
1637 ctx = FN(PW,get_ctx)(pw);
1638 if (!isl_space_has_named_params(pw->dim) ||
1639 !isl_space_has_named_params(ma_space))
1640 isl_die(ctx, isl_error_invalid,
1641 "unaligned unnamed parameters", goto error);
1642 pw = FN(PW,align_params)(pw, ma_space);
1643 ma = isl_multi_aff_align_params(ma, FN(PW,get_space)(pw));
1644 return fn(pw, ma);
1645 error:
1646 isl_space_free(ma_space);
1647 FN(PW,free)(pw);
1648 isl_multi_aff_free(ma);
1649 return NULL;
1650 }
1651
1652 static __isl_give PW *FN(PW,align_params_pw_pw_multi_aff_and)(__isl_take PW *pw,
1653 __isl_take isl_pw_multi_aff *pma,
1654 __isl_give PW *(*fn)(__isl_take PW *pw,
1655 __isl_take isl_pw_multi_aff *ma))
1656 {
1657 isl_ctx *ctx;
1658 isl_space *pma_space;
1659
1660 pma_space = isl_pw_multi_aff_get_space(pma);
1661 if (!pw || !pma || !pma_space)
1662 goto error;
1663 if (isl_space_match(pw->dim, isl_dim_param, pma_space, isl_dim_param)) {
1664 isl_space_free(pma_space);
1665 return fn(pw, pma);
1666 }
1667 ctx = FN(PW,get_ctx)(pw);
1668 if (!isl_space_has_named_params(pw->dim) ||
1669 !isl_space_has_named_params(pma_space))
1670 isl_die(ctx, isl_error_invalid,
1671 "unaligned unnamed parameters", goto error);
1672 pw = FN(PW,align_params)(pw, pma_space);
1673 pma = isl_pw_multi_aff_align_params(pma, FN(PW,get_space)(pw));
1674 return fn(pw, pma);
1675 error:
1676 isl_space_free(pma_space);
1677 FN(PW,free)(pw);
1678 isl_pw_multi_aff_free(pma);
1679 return NULL;
1680 }
1681
1682 /* Compute the pullback of "pw" by the function represented by "ma".
1683 * In other words, plug in "ma" in "pw".
1684 */
1685 static __isl_give PW *FN(PW,pullback_multi_aff_aligned)(__isl_take PW *pw,
1686 __isl_take isl_multi_aff *ma)
1687 {
1688 int i;
1689 isl_space *space = NULL;
1690
1691 ma = isl_multi_aff_align_divs(ma);
1692 pw = FN(PW,cow)(pw);
1693 if (!pw || !ma)
1694 goto error;
1695
1696 space = isl_space_join(isl_multi_aff_get_space(ma),
1697 FN(PW,get_space)(pw));
1698
1699 for (i = 0; i < pw->n; ++i) {
1700 pw->p[i].set = isl_set_preimage_multi_aff(pw->p[i].set,
1701 isl_multi_aff_copy(ma));
1702 if (!pw->p[i].set)
1703 goto error;
1704 pw->p[i].FIELD = FN(EL,pullback_multi_aff)(pw->p[i].FIELD,
1705 isl_multi_aff_copy(ma));
1706 if (!pw->p[i].FIELD)
1707 goto error;
1708 }
1709
1710 pw = FN(PW,reset_space)(pw, space);
1711 isl_multi_aff_free(ma);
1712 return pw;
1713 error:
1714 isl_space_free(space);
1715 isl_multi_aff_free(ma);
1716 FN(PW,free)(pw);
1717 return NULL;
1718 }
1719
1720 __isl_give PW *FN(PW,pullback_multi_aff)(__isl_take PW *pw,
1721 __isl_take isl_multi_aff *ma)
1722 {
1723 return FN(PW,align_params_pw_multi_aff_and)(pw, ma,
1724 &FN(PW,pullback_multi_aff_aligned));
1725 }
1726
1727 /* Compute the pullback of "pw" by the function represented by "pma".
1728 * In other words, plug in "pma" in "pw".
1729 */
1730 static __isl_give PW *FN(PW,pullback_pw_multi_aff_aligned)(__isl_take PW *pw,
1731 __isl_take isl_pw_multi_aff *pma)
1732 {
1733 int i;
1734 PW *res;
1735
1736 if (!pma)
1737 goto error;
1738
1739 if (pma->n == 0) {
1740 isl_pw_multi_aff_free(pma);
1741 res = FN(PW,empty)(FN(PW,get_space)(pw));
1742 FN(PW,free)(pw);
1743 return res;
1744 }
1745
1746 res = FN(PW,pullback_multi_aff)(FN(PW,copy)(pw),
1747 isl_multi_aff_copy(pma->p[0].maff));
1748 res = FN(PW,intersect_domain)(res, isl_set_copy(pma->p[0].set));
1749
1750 for (i = 1; i < pma->n; ++i) {
1751 PW *res_i;
1752
1753 res_i = FN(PW,pullback_multi_aff)(FN(PW,copy)(pw),
1754 isl_multi_aff_copy(pma->p[i].maff));
1755 res_i = FN(PW,intersect_domain)(res_i,
1756 isl_set_copy(pma->p[i].set));
1757 res = FN(PW,add_disjoint)(res, res_i);
1758 }
1759
1760 isl_pw_multi_aff_free(pma);
1761 FN(PW,free)(pw);
1762 return res;
1763 error:
1764 isl_pw_multi_aff_free(pma);
1765 FN(PW,free)(pw);
1766 return NULL;
1767 }
1768
1769 __isl_give PW *FN(PW,pullback_pw_multi_aff)(__isl_take PW *pw,
1770 __isl_take isl_pw_multi_aff *pma)
1771 {
1772 return FN(PW,align_params_pw_pw_multi_aff_and)(pw, pma,
1773 &FN(PW,pullback_pw_multi_aff_aligned));
1774 }
1775 #endif
Integer set library