2 * Copyright 2008-2009 Katholieke Universiteit Leuven
3 * Copyright 2010 INRIA Saclay
5 * Use of this software is governed by the GNU LGPLv2.1 license
7 * Written by Sven Verdoolaege, K.U.Leuven, Departement
8 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
9 * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
10 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
14 #include <isl_ctx_private.h>
15 #include <isl_map_private.h>
17 #include "isl_space_private.h"
18 #include "isl_equalities.h"
19 #include <isl_list_private.h>
24 #include "isl_map_piplib.h"
25 #include <isl_reordering.h>
26 #include "isl_sample.h"
29 #include <isl_mat_private.h>
30 #include <isl_dim_map.h>
31 #include <isl_local_space_private.h>
32 #include <isl_aff_private.h>
33 #include <isl_options_private.h>
35 static unsigned n(__isl_keep isl_space *dim, enum isl_dim_type type)
38 case isl_dim_param: return dim->nparam;
39 case isl_dim_in: return dim->n_in;
40 case isl_dim_out: return dim->n_out;
41 case isl_dim_all: return dim->nparam + dim->n_in + dim->n_out;
46 static unsigned pos(__isl_keep isl_space *dim, enum isl_dim_type type)
49 case isl_dim_param: return 1;
50 case isl_dim_in: return 1 + dim->nparam;
51 case isl_dim_out: return 1 + dim->nparam + dim->n_in;
56 unsigned isl_basic_map_dim(__isl_keep isl_basic_map *bmap,
57 enum isl_dim_type type)
62 case isl_dim_cst: return 1;
65 case isl_dim_out: return isl_space_dim(bmap->dim, type);
66 case isl_dim_div: return bmap->n_div;
67 case isl_dim_all: return isl_basic_map_total_dim(bmap);
72 unsigned isl_map_dim(__isl_keep isl_map *map, enum isl_dim_type type)
74 return map ? n(map->dim, type) : 0;
77 unsigned isl_set_dim(__isl_keep isl_set *set, enum isl_dim_type type)
79 return set ? n(set->dim, type) : 0;
82 unsigned isl_basic_map_offset(struct isl_basic_map *bmap,
83 enum isl_dim_type type)
85 isl_space *dim = bmap->dim;
87 case isl_dim_cst: return 0;
88 case isl_dim_param: return 1;
89 case isl_dim_in: return 1 + dim->nparam;
90 case isl_dim_out: return 1 + dim->nparam + dim->n_in;
91 case isl_dim_div: return 1 + dim->nparam + dim->n_in + dim->n_out;
96 unsigned isl_basic_set_offset(struct isl_basic_set *bset,
97 enum isl_dim_type type)
99 return isl_basic_map_offset(bset, type);
102 static unsigned map_offset(struct isl_map *map, enum isl_dim_type type)
104 return pos(map->dim, type);
107 unsigned isl_basic_set_dim(__isl_keep isl_basic_set *bset,
108 enum isl_dim_type type)
110 return isl_basic_map_dim(bset, type);
113 unsigned isl_basic_set_n_dim(__isl_keep isl_basic_set *bset)
115 return isl_basic_set_dim(bset, isl_dim_set);
118 unsigned isl_basic_set_n_param(__isl_keep isl_basic_set *bset)
120 return isl_basic_set_dim(bset, isl_dim_param);
123 unsigned isl_basic_set_total_dim(const struct isl_basic_set *bset)
127 return isl_space_dim(bset->dim, isl_dim_all) + bset->n_div;
130 unsigned isl_set_n_dim(__isl_keep isl_set *set)
132 return isl_set_dim(set, isl_dim_set);
135 unsigned isl_set_n_param(__isl_keep isl_set *set)
137 return isl_set_dim(set, isl_dim_param);
140 unsigned isl_basic_map_n_in(const struct isl_basic_map *bmap)
142 return bmap ? bmap->dim->n_in : 0;
145 unsigned isl_basic_map_n_out(const struct isl_basic_map *bmap)
147 return bmap ? bmap->dim->n_out : 0;
150 unsigned isl_basic_map_n_param(const struct isl_basic_map *bmap)
152 return bmap ? bmap->dim->nparam : 0;
155 unsigned isl_basic_map_n_div(const struct isl_basic_map *bmap)
157 return bmap ? bmap->n_div : 0;
160 unsigned isl_basic_map_total_dim(const struct isl_basic_map *bmap)
162 return bmap ? isl_space_dim(bmap->dim, isl_dim_all) + bmap->n_div : 0;
165 unsigned isl_map_n_in(const struct isl_map *map)
167 return map ? map->dim->n_in : 0;
170 unsigned isl_map_n_out(const struct isl_map *map)
172 return map ? map->dim->n_out : 0;
175 unsigned isl_map_n_param(const struct isl_map *map)
177 return map ? map->dim->nparam : 0;
180 int isl_map_compatible_domain(struct isl_map *map, struct isl_set *set)
185 m = isl_space_match(map->dim, isl_dim_param, set->dim, isl_dim_param);
188 return isl_space_tuple_match(map->dim, isl_dim_in, set->dim, isl_dim_set);
191 int isl_basic_map_compatible_domain(struct isl_basic_map *bmap,
192 struct isl_basic_set *bset)
197 m = isl_space_match(bmap->dim, isl_dim_param, bset->dim, isl_dim_param);
200 return isl_space_tuple_match(bmap->dim, isl_dim_in, bset->dim, isl_dim_set);
203 int isl_map_compatible_range(__isl_keep isl_map *map, __isl_keep isl_set *set)
208 m = isl_space_match(map->dim, isl_dim_param, set->dim, isl_dim_param);
211 return isl_space_tuple_match(map->dim, isl_dim_out, set->dim, isl_dim_set);
214 int isl_basic_map_compatible_range(struct isl_basic_map *bmap,
215 struct isl_basic_set *bset)
220 m = isl_space_match(bmap->dim, isl_dim_param, bset->dim, isl_dim_param);
223 return isl_space_tuple_match(bmap->dim, isl_dim_out, bset->dim, isl_dim_set);
226 isl_ctx *isl_basic_map_get_ctx(__isl_keep isl_basic_map *bmap)
228 return bmap ? bmap->ctx : NULL;
231 isl_ctx *isl_basic_set_get_ctx(__isl_keep isl_basic_set *bset)
233 return bset ? bset->ctx : NULL;
236 isl_ctx *isl_map_get_ctx(__isl_keep isl_map *map)
238 return map ? map->ctx : NULL;
241 isl_ctx *isl_set_get_ctx(__isl_keep isl_set *set)
243 return set ? set->ctx : NULL;
246 __isl_give isl_space *isl_basic_map_get_space(__isl_keep isl_basic_map *bmap)
250 return isl_space_copy(bmap->dim);
253 __isl_give isl_space *isl_basic_set_get_space(__isl_keep isl_basic_set *bset)
257 return isl_space_copy(bset->dim);
260 /* Extract the divs in "bmap" as a matrix.
262 __isl_give isl_mat *isl_basic_map_get_divs(__isl_keep isl_basic_map *bmap)
273 ctx = isl_basic_map_get_ctx(bmap);
274 total = isl_space_dim(bmap->dim, isl_dim_all);
275 cols = 1 + 1 + total + bmap->n_div;
276 div = isl_mat_alloc(ctx, bmap->n_div, cols);
280 for (i = 0; i < bmap->n_div; ++i)
281 isl_seq_cpy(div->row[i], bmap->div[i], cols);
286 __isl_give isl_local_space *isl_basic_map_get_local_space(
287 __isl_keep isl_basic_map *bmap)
294 div = isl_basic_map_get_divs(bmap);
295 return isl_local_space_alloc_div(isl_space_copy(bmap->dim), div);
298 __isl_give isl_local_space *isl_basic_set_get_local_space(
299 __isl_keep isl_basic_set *bset)
301 return isl_basic_map_get_local_space(bset);
304 __isl_give isl_basic_map *isl_basic_map_from_local_space(
305 __isl_take isl_local_space *ls)
314 n_div = isl_local_space_dim(ls, isl_dim_div);
315 bmap = isl_basic_map_alloc_space(isl_local_space_get_space(ls),
316 n_div, 0, 2 * n_div);
318 for (i = 0; i < n_div; ++i)
319 if (isl_basic_map_alloc_div(bmap) < 0)
322 for (i = 0; i < n_div; ++i) {
323 isl_seq_cpy(bmap->div[i], ls->div->row[i], ls->div->n_col);
324 if (isl_basic_map_add_div_constraints(bmap, i) < 0)
328 isl_local_space_free(ls);
331 isl_local_space_free(ls);
332 isl_basic_map_free(bmap);
336 __isl_give isl_basic_set *isl_basic_set_from_local_space(
337 __isl_take isl_local_space *ls)
339 return isl_basic_map_from_local_space(ls);
342 __isl_give isl_space *isl_map_get_space(__isl_keep isl_map *map)
346 return isl_space_copy(map->dim);
349 __isl_give isl_space *isl_set_get_space(__isl_keep isl_set *set)
353 return isl_space_copy(set->dim);
356 __isl_give isl_basic_map *isl_basic_map_set_tuple_name(
357 __isl_take isl_basic_map *bmap, enum isl_dim_type type, const char *s)
359 bmap = isl_basic_map_cow(bmap);
362 bmap->dim = isl_space_set_tuple_name(bmap->dim, type, s);
365 bmap = isl_basic_map_finalize(bmap);
368 isl_basic_map_free(bmap);
372 __isl_give isl_basic_set *isl_basic_set_set_tuple_name(
373 __isl_take isl_basic_set *bset, const char *s)
375 return isl_basic_map_set_tuple_name(bset, isl_dim_set, s);
378 const char *isl_basic_map_get_tuple_name(__isl_keep isl_basic_map *bmap,
379 enum isl_dim_type type)
381 return bmap ? isl_space_get_tuple_name(bmap->dim, type) : NULL;
384 __isl_give isl_map *isl_map_set_tuple_name(__isl_take isl_map *map,
385 enum isl_dim_type type, const char *s)
389 map = isl_map_cow(map);
393 map->dim = isl_space_set_tuple_name(map->dim, type, s);
397 for (i = 0; i < map->n; ++i) {
398 map->p[i] = isl_basic_map_set_tuple_name(map->p[i], type, s);
409 const char *isl_map_get_tuple_name(__isl_keep isl_map *map,
410 enum isl_dim_type type)
412 return map ? isl_space_get_tuple_name(map->dim, type) : NULL;
415 __isl_give isl_set *isl_set_set_tuple_name(__isl_take isl_set *set,
418 return (isl_set *)isl_map_set_tuple_name((isl_map *)set, isl_dim_set, s);
421 __isl_give isl_map *isl_map_set_tuple_id(__isl_take isl_map *map,
422 enum isl_dim_type type, __isl_take isl_id *id)
424 map = isl_map_cow(map);
426 return isl_id_free(id);
428 map->dim = isl_space_set_tuple_id(map->dim, type, id);
430 return isl_map_reset_space(map, isl_space_copy(map->dim));
433 __isl_give isl_set *isl_set_set_tuple_id(__isl_take isl_set *set,
434 __isl_take isl_id *id)
436 return isl_map_set_tuple_id(set, isl_dim_set, id);
439 __isl_give isl_map *isl_map_reset_tuple_id(__isl_take isl_map *map,
440 enum isl_dim_type type)
442 map = isl_map_cow(map);
446 map->dim = isl_space_reset_tuple_id(map->dim, type);
448 return isl_map_reset_space(map, isl_space_copy(map->dim));
451 __isl_give isl_set *isl_set_reset_tuple_id(__isl_take isl_set *set)
453 return isl_map_reset_tuple_id(set, isl_dim_set);
456 int isl_map_has_tuple_id(__isl_keep isl_map *map, enum isl_dim_type type)
458 return map ? isl_space_has_tuple_id(map->dim, type) : -1;
461 __isl_give isl_id *isl_map_get_tuple_id(__isl_keep isl_map *map,
462 enum isl_dim_type type)
464 return map ? isl_space_get_tuple_id(map->dim, type) : NULL;
467 int isl_set_has_tuple_id(__isl_keep isl_set *set)
469 return isl_map_has_tuple_id(set, isl_dim_set);
472 __isl_give isl_id *isl_set_get_tuple_id(__isl_keep isl_set *set)
474 return isl_map_get_tuple_id(set, isl_dim_set);
477 /* Does the set tuple have a name?
479 int isl_set_has_tuple_name(__isl_keep isl_set *set)
481 return set ? isl_space_has_tuple_name(set->dim, isl_dim_set) : -1;
485 const char *isl_basic_set_get_tuple_name(__isl_keep isl_basic_set *bset)
487 return bset ? isl_space_get_tuple_name(bset->dim, isl_dim_set) : NULL;
490 const char *isl_set_get_tuple_name(__isl_keep isl_set *set)
492 return set ? isl_space_get_tuple_name(set->dim, isl_dim_set) : NULL;
495 const char *isl_basic_map_get_dim_name(__isl_keep isl_basic_map *bmap,
496 enum isl_dim_type type, unsigned pos)
498 return bmap ? isl_space_get_dim_name(bmap->dim, type, pos) : NULL;
501 const char *isl_basic_set_get_dim_name(__isl_keep isl_basic_set *bset,
502 enum isl_dim_type type, unsigned pos)
504 return bset ? isl_space_get_dim_name(bset->dim, type, pos) : NULL;
507 const char *isl_map_get_dim_name(__isl_keep isl_map *map,
508 enum isl_dim_type type, unsigned pos)
510 return map ? isl_space_get_dim_name(map->dim, type, pos) : NULL;
513 const char *isl_set_get_dim_name(__isl_keep isl_set *set,
514 enum isl_dim_type type, unsigned pos)
516 return set ? isl_space_get_dim_name(set->dim, type, pos) : NULL;
519 /* Does the given dimension have a name?
521 int isl_set_has_dim_name(__isl_keep isl_set *set,
522 enum isl_dim_type type, unsigned pos)
524 return set ? isl_space_has_dim_name(set->dim, type, pos) : -1;
527 __isl_give isl_basic_map *isl_basic_map_set_dim_name(
528 __isl_take isl_basic_map *bmap,
529 enum isl_dim_type type, unsigned pos, const char *s)
531 bmap = isl_basic_map_cow(bmap);
534 bmap->dim = isl_space_set_dim_name(bmap->dim, type, pos, s);
539 isl_basic_map_free(bmap);
543 __isl_give isl_map *isl_map_set_dim_name(__isl_take isl_map *map,
544 enum isl_dim_type type, unsigned pos, const char *s)
548 map = isl_map_cow(map);
552 map->dim = isl_space_set_dim_name(map->dim, type, pos, s);
556 for (i = 0; i < map->n; ++i) {
557 map->p[i] = isl_basic_map_set_dim_name(map->p[i], type, pos, s);
568 __isl_give isl_basic_set *isl_basic_set_set_dim_name(
569 __isl_take isl_basic_set *bset,
570 enum isl_dim_type type, unsigned pos, const char *s)
572 return (isl_basic_set *)isl_basic_map_set_dim_name(
573 (isl_basic_map *)bset, type, pos, s);
576 __isl_give isl_set *isl_set_set_dim_name(__isl_take isl_set *set,
577 enum isl_dim_type type, unsigned pos, const char *s)
579 return (isl_set *)isl_map_set_dim_name((isl_map *)set, type, pos, s);
582 int isl_basic_map_has_dim_id(__isl_keep isl_basic_map *bmap,
583 enum isl_dim_type type, unsigned pos)
585 return bmap ? isl_space_has_dim_id(bmap->dim, type, pos) : -1;
588 __isl_give isl_id *isl_basic_set_get_dim_id(__isl_keep isl_basic_set *bset,
589 enum isl_dim_type type, unsigned pos)
591 return bset ? isl_space_get_dim_id(bset->dim, type, pos) : NULL;
594 int isl_map_has_dim_id(__isl_keep isl_map *map,
595 enum isl_dim_type type, unsigned pos)
597 return map ? isl_space_has_dim_id(map->dim, type, pos) : -1;
600 __isl_give isl_id *isl_map_get_dim_id(__isl_keep isl_map *map,
601 enum isl_dim_type type, unsigned pos)
603 return map ? isl_space_get_dim_id(map->dim, type, pos) : NULL;
606 int isl_set_has_dim_id(__isl_keep isl_set *set,
607 enum isl_dim_type type, unsigned pos)
609 return isl_map_has_dim_id(set, type, pos);
612 __isl_give isl_id *isl_set_get_dim_id(__isl_keep isl_set *set,
613 enum isl_dim_type type, unsigned pos)
615 return isl_map_get_dim_id(set, type, pos);
618 __isl_give isl_map *isl_map_set_dim_id(__isl_take isl_map *map,
619 enum isl_dim_type type, unsigned pos, __isl_take isl_id *id)
621 map = isl_map_cow(map);
623 return isl_id_free(id);
625 map->dim = isl_space_set_dim_id(map->dim, type, pos, id);
627 return isl_map_reset_space(map, isl_space_copy(map->dim));
630 __isl_give isl_set *isl_set_set_dim_id(__isl_take isl_set *set,
631 enum isl_dim_type type, unsigned pos, __isl_take isl_id *id)
633 return isl_map_set_dim_id(set, type, pos, id);
636 int isl_map_find_dim_by_id(__isl_keep isl_map *map, enum isl_dim_type type,
637 __isl_keep isl_id *id)
641 return isl_space_find_dim_by_id(map->dim, type, id);
644 int isl_set_find_dim_by_id(__isl_keep isl_set *set, enum isl_dim_type type,
645 __isl_keep isl_id *id)
647 return isl_map_find_dim_by_id(set, type, id);
650 int isl_map_find_dim_by_name(__isl_keep isl_map *map, enum isl_dim_type type,
655 return isl_space_find_dim_by_name(map->dim, type, name);
658 int isl_set_find_dim_by_name(__isl_keep isl_set *set, enum isl_dim_type type,
661 return isl_map_find_dim_by_name(set, type, name);
664 int isl_basic_map_is_rational(__isl_keep isl_basic_map *bmap)
668 return ISL_F_ISSET(bmap, ISL_BASIC_MAP_RATIONAL);
671 int isl_basic_set_is_rational(__isl_keep isl_basic_set *bset)
673 return isl_basic_map_is_rational(bset);
676 /* Is this basic set a parameter domain?
678 int isl_basic_set_is_params(__isl_keep isl_basic_set *bset)
682 return isl_space_is_params(bset->dim);
685 /* Is this set a parameter domain?
687 int isl_set_is_params(__isl_keep isl_set *set)
691 return isl_space_is_params(set->dim);
694 /* Is this map actually a parameter domain?
695 * Users should never call this function. Outside of isl,
696 * a map can never be a parameter domain.
698 int isl_map_is_params(__isl_keep isl_map *map)
702 return isl_space_is_params(map->dim);
705 static struct isl_basic_map *basic_map_init(struct isl_ctx *ctx,
706 struct isl_basic_map *bmap, unsigned extra,
707 unsigned n_eq, unsigned n_ineq)
710 size_t row_size = 1 + isl_space_dim(bmap->dim, isl_dim_all) + extra;
715 bmap->block = isl_blk_alloc(ctx, (n_ineq + n_eq) * row_size);
716 if (isl_blk_is_error(bmap->block))
719 bmap->ineq = isl_alloc_array(ctx, isl_int *, n_ineq + n_eq);
724 bmap->block2 = isl_blk_empty();
727 bmap->block2 = isl_blk_alloc(ctx, extra * (1 + row_size));
728 if (isl_blk_is_error(bmap->block2))
731 bmap->div = isl_alloc_array(ctx, isl_int *, extra);
736 for (i = 0; i < n_ineq + n_eq; ++i)
737 bmap->ineq[i] = bmap->block.data + i * row_size;
739 for (i = 0; i < extra; ++i)
740 bmap->div[i] = bmap->block2.data + i * (1 + row_size);
744 bmap->c_size = n_eq + n_ineq;
745 bmap->eq = bmap->ineq + n_ineq;
754 isl_basic_map_free(bmap);
758 struct isl_basic_set *isl_basic_set_alloc(struct isl_ctx *ctx,
759 unsigned nparam, unsigned dim, unsigned extra,
760 unsigned n_eq, unsigned n_ineq)
762 struct isl_basic_map *bmap;
765 space = isl_space_set_alloc(ctx, nparam, dim);
769 bmap = isl_basic_map_alloc_space(space, extra, n_eq, n_ineq);
770 return (struct isl_basic_set *)bmap;
773 struct isl_basic_set *isl_basic_set_alloc_space(__isl_take isl_space *dim,
774 unsigned extra, unsigned n_eq, unsigned n_ineq)
776 struct isl_basic_map *bmap;
779 isl_assert(dim->ctx, dim->n_in == 0, goto error);
780 bmap = isl_basic_map_alloc_space(dim, extra, n_eq, n_ineq);
781 return (struct isl_basic_set *)bmap;
787 struct isl_basic_map *isl_basic_map_alloc_space(__isl_take isl_space *dim,
788 unsigned extra, unsigned n_eq, unsigned n_ineq)
790 struct isl_basic_map *bmap;
794 bmap = isl_calloc_type(dim->ctx, struct isl_basic_map);
799 return basic_map_init(dim->ctx, bmap, extra, n_eq, n_ineq);
805 struct isl_basic_map *isl_basic_map_alloc(struct isl_ctx *ctx,
806 unsigned nparam, unsigned in, unsigned out, unsigned extra,
807 unsigned n_eq, unsigned n_ineq)
809 struct isl_basic_map *bmap;
812 dim = isl_space_alloc(ctx, nparam, in, out);
816 bmap = isl_basic_map_alloc_space(dim, extra, n_eq, n_ineq);
820 static void dup_constraints(
821 struct isl_basic_map *dst, struct isl_basic_map *src)
824 unsigned total = isl_basic_map_total_dim(src);
826 for (i = 0; i < src->n_eq; ++i) {
827 int j = isl_basic_map_alloc_equality(dst);
828 isl_seq_cpy(dst->eq[j], src->eq[i], 1+total);
831 for (i = 0; i < src->n_ineq; ++i) {
832 int j = isl_basic_map_alloc_inequality(dst);
833 isl_seq_cpy(dst->ineq[j], src->ineq[i], 1+total);
836 for (i = 0; i < src->n_div; ++i) {
837 int j = isl_basic_map_alloc_div(dst);
838 isl_seq_cpy(dst->div[j], src->div[i], 1+1+total);
840 ISL_F_SET(dst, ISL_BASIC_SET_FINAL);
843 struct isl_basic_map *isl_basic_map_dup(struct isl_basic_map *bmap)
845 struct isl_basic_map *dup;
849 dup = isl_basic_map_alloc_space(isl_space_copy(bmap->dim),
850 bmap->n_div, bmap->n_eq, bmap->n_ineq);
853 dup_constraints(dup, bmap);
854 dup->flags = bmap->flags;
855 dup->sample = isl_vec_copy(bmap->sample);
859 struct isl_basic_set *isl_basic_set_dup(struct isl_basic_set *bset)
861 struct isl_basic_map *dup;
863 dup = isl_basic_map_dup((struct isl_basic_map *)bset);
864 return (struct isl_basic_set *)dup;
867 struct isl_basic_set *isl_basic_set_copy(struct isl_basic_set *bset)
872 if (ISL_F_ISSET(bset, ISL_BASIC_SET_FINAL)) {
876 return isl_basic_set_dup(bset);
879 struct isl_set *isl_set_copy(struct isl_set *set)
888 struct isl_basic_map *isl_basic_map_copy(struct isl_basic_map *bmap)
893 if (ISL_F_ISSET(bmap, ISL_BASIC_SET_FINAL)) {
897 bmap = isl_basic_map_dup(bmap);
899 ISL_F_SET(bmap, ISL_BASIC_SET_FINAL);
903 struct isl_map *isl_map_copy(struct isl_map *map)
912 void isl_basic_map_free(struct isl_basic_map *bmap)
920 isl_ctx_deref(bmap->ctx);
922 isl_blk_free(bmap->ctx, bmap->block2);
924 isl_blk_free(bmap->ctx, bmap->block);
925 isl_vec_free(bmap->sample);
926 isl_space_free(bmap->dim);
930 void isl_basic_set_free(struct isl_basic_set *bset)
932 isl_basic_map_free((struct isl_basic_map *)bset);
935 static int room_for_con(struct isl_basic_map *bmap, unsigned n)
937 return bmap->n_eq + bmap->n_ineq + n <= bmap->c_size;
940 __isl_give isl_map *isl_map_align_params_map_map_and(
941 __isl_take isl_map *map1, __isl_take isl_map *map2,
942 __isl_give isl_map *(*fn)(__isl_take isl_map *map1,
943 __isl_take isl_map *map2))
947 if (isl_space_match(map1->dim, isl_dim_param, map2->dim, isl_dim_param))
948 return fn(map1, map2);
949 if (!isl_space_has_named_params(map1->dim) ||
950 !isl_space_has_named_params(map2->dim))
951 isl_die(map1->ctx, isl_error_invalid,
952 "unaligned unnamed parameters", goto error);
953 map1 = isl_map_align_params(map1, isl_map_get_space(map2));
954 map2 = isl_map_align_params(map2, isl_map_get_space(map1));
955 return fn(map1, map2);
962 int isl_map_align_params_map_map_and_test(__isl_keep isl_map *map1,
963 __isl_keep isl_map *map2,
964 int (*fn)(__isl_keep isl_map *map1, __isl_keep isl_map *map2))
970 if (isl_space_match(map1->dim, isl_dim_param, map2->dim, isl_dim_param))
971 return fn(map1, map2);
972 if (!isl_space_has_named_params(map1->dim) ||
973 !isl_space_has_named_params(map2->dim))
974 isl_die(map1->ctx, isl_error_invalid,
975 "unaligned unnamed parameters", return -1);
976 map1 = isl_map_copy(map1);
977 map2 = isl_map_copy(map2);
978 map1 = isl_map_align_params(map1, isl_map_get_space(map2));
979 map2 = isl_map_align_params(map2, isl_map_get_space(map1));
986 int isl_basic_map_alloc_equality(struct isl_basic_map *bmap)
992 isl_assert(ctx, room_for_con(bmap, 1), return -1);
993 isl_assert(ctx, (bmap->eq - bmap->ineq) + bmap->n_eq <= bmap->c_size,
995 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
996 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_REDUNDANT);
997 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_IMPLICIT);
998 ISL_F_CLR(bmap, ISL_BASIC_MAP_ALL_EQUALITIES);
999 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED_DIVS);
1000 if ((bmap->eq - bmap->ineq) + bmap->n_eq == bmap->c_size) {
1002 int j = isl_basic_map_alloc_inequality(bmap);
1006 bmap->ineq[j] = bmap->ineq[bmap->n_ineq - 1];
1007 bmap->ineq[bmap->n_ineq - 1] = bmap->eq[-1];
1014 isl_seq_clr(bmap->eq[bmap->n_eq] + 1 + isl_basic_map_total_dim(bmap),
1015 bmap->extra - bmap->n_div);
1016 return bmap->n_eq++;
1019 int isl_basic_set_alloc_equality(struct isl_basic_set *bset)
1021 return isl_basic_map_alloc_equality((struct isl_basic_map *)bset);
1024 int isl_basic_map_free_equality(struct isl_basic_map *bmap, unsigned n)
1028 isl_assert(bmap->ctx, n <= bmap->n_eq, return -1);
1033 int isl_basic_set_free_equality(struct isl_basic_set *bset, unsigned n)
1035 return isl_basic_map_free_equality((struct isl_basic_map *)bset, n);
1038 int isl_basic_map_drop_equality(struct isl_basic_map *bmap, unsigned pos)
1043 isl_assert(bmap->ctx, pos < bmap->n_eq, return -1);
1045 if (pos != bmap->n_eq - 1) {
1047 bmap->eq[pos] = bmap->eq[bmap->n_eq - 1];
1048 bmap->eq[bmap->n_eq - 1] = t;
1054 int isl_basic_set_drop_equality(struct isl_basic_set *bset, unsigned pos)
1056 return isl_basic_map_drop_equality((struct isl_basic_map *)bset, pos);
1059 void isl_basic_map_inequality_to_equality(
1060 struct isl_basic_map *bmap, unsigned pos)
1064 t = bmap->ineq[pos];
1065 bmap->ineq[pos] = bmap->ineq[bmap->n_ineq - 1];
1066 bmap->ineq[bmap->n_ineq - 1] = bmap->eq[-1];
1071 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_REDUNDANT);
1072 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
1073 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED_DIVS);
1074 ISL_F_CLR(bmap, ISL_BASIC_MAP_ALL_EQUALITIES);
1077 static int room_for_ineq(struct isl_basic_map *bmap, unsigned n)
1079 return bmap->n_ineq + n <= bmap->eq - bmap->ineq;
1082 int isl_basic_map_alloc_inequality(struct isl_basic_map *bmap)
1084 struct isl_ctx *ctx;
1088 isl_assert(ctx, room_for_ineq(bmap, 1), return -1);
1089 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_IMPLICIT);
1090 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_REDUNDANT);
1091 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
1092 ISL_F_CLR(bmap, ISL_BASIC_MAP_ALL_EQUALITIES);
1093 isl_seq_clr(bmap->ineq[bmap->n_ineq] +
1094 1 + isl_basic_map_total_dim(bmap),
1095 bmap->extra - bmap->n_div);
1096 return bmap->n_ineq++;
1099 int isl_basic_set_alloc_inequality(struct isl_basic_set *bset)
1101 return isl_basic_map_alloc_inequality((struct isl_basic_map *)bset);
1104 int isl_basic_map_free_inequality(struct isl_basic_map *bmap, unsigned n)
1108 isl_assert(bmap->ctx, n <= bmap->n_ineq, return -1);
1113 int isl_basic_set_free_inequality(struct isl_basic_set *bset, unsigned n)
1115 return isl_basic_map_free_inequality((struct isl_basic_map *)bset, n);
1118 int isl_basic_map_drop_inequality(struct isl_basic_map *bmap, unsigned pos)
1123 isl_assert(bmap->ctx, pos < bmap->n_ineq, return -1);
1125 if (pos != bmap->n_ineq - 1) {
1126 t = bmap->ineq[pos];
1127 bmap->ineq[pos] = bmap->ineq[bmap->n_ineq - 1];
1128 bmap->ineq[bmap->n_ineq - 1] = t;
1129 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
1135 int isl_basic_set_drop_inequality(struct isl_basic_set *bset, unsigned pos)
1137 return isl_basic_map_drop_inequality((struct isl_basic_map *)bset, pos);
1140 __isl_give isl_basic_map *isl_basic_map_add_eq(__isl_take isl_basic_map *bmap,
1145 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
1148 k = isl_basic_map_alloc_equality(bmap);
1151 isl_seq_cpy(bmap->eq[k], eq, 1 + isl_basic_map_total_dim(bmap));
1154 isl_basic_map_free(bmap);
1158 __isl_give isl_basic_set *isl_basic_set_add_eq(__isl_take isl_basic_set *bset,
1161 return (isl_basic_set *)
1162 isl_basic_map_add_eq((isl_basic_map *)bset, eq);
1165 __isl_give isl_basic_map *isl_basic_map_add_ineq(__isl_take isl_basic_map *bmap,
1170 bmap = isl_basic_map_extend_constraints(bmap, 0, 1);
1173 k = isl_basic_map_alloc_inequality(bmap);
1176 isl_seq_cpy(bmap->ineq[k], ineq, 1 + isl_basic_map_total_dim(bmap));
1179 isl_basic_map_free(bmap);
1183 __isl_give isl_basic_set *isl_basic_set_add_ineq(__isl_take isl_basic_set *bset,
1186 return (isl_basic_set *)
1187 isl_basic_map_add_ineq((isl_basic_map *)bset, ineq);
1190 int isl_basic_map_alloc_div(struct isl_basic_map *bmap)
1194 isl_assert(bmap->ctx, bmap->n_div < bmap->extra, return -1);
1195 isl_seq_clr(bmap->div[bmap->n_div] +
1196 1 + 1 + isl_basic_map_total_dim(bmap),
1197 bmap->extra - bmap->n_div);
1198 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED_DIVS);
1199 return bmap->n_div++;
1202 int isl_basic_set_alloc_div(struct isl_basic_set *bset)
1204 return isl_basic_map_alloc_div((struct isl_basic_map *)bset);
1207 int isl_basic_map_free_div(struct isl_basic_map *bmap, unsigned n)
1211 isl_assert(bmap->ctx, n <= bmap->n_div, return -1);
1216 int isl_basic_set_free_div(struct isl_basic_set *bset, unsigned n)
1218 return isl_basic_map_free_div((struct isl_basic_map *)bset, n);
1221 /* Copy constraint from src to dst, putting the vars of src at offset
1222 * dim_off in dst and the divs of src at offset div_off in dst.
1223 * If both sets are actually map, then dim_off applies to the input
1226 static void copy_constraint(struct isl_basic_map *dst_map, isl_int *dst,
1227 struct isl_basic_map *src_map, isl_int *src,
1228 unsigned in_off, unsigned out_off, unsigned div_off)
1230 unsigned src_nparam = isl_basic_map_n_param(src_map);
1231 unsigned dst_nparam = isl_basic_map_n_param(dst_map);
1232 unsigned src_in = isl_basic_map_n_in(src_map);
1233 unsigned dst_in = isl_basic_map_n_in(dst_map);
1234 unsigned src_out = isl_basic_map_n_out(src_map);
1235 unsigned dst_out = isl_basic_map_n_out(dst_map);
1236 isl_int_set(dst[0], src[0]);
1237 isl_seq_cpy(dst+1, src+1, isl_min(dst_nparam, src_nparam));
1238 if (dst_nparam > src_nparam)
1239 isl_seq_clr(dst+1+src_nparam,
1240 dst_nparam - src_nparam);
1241 isl_seq_clr(dst+1+dst_nparam, in_off);
1242 isl_seq_cpy(dst+1+dst_nparam+in_off,
1244 isl_min(dst_in-in_off, src_in));
1245 if (dst_in-in_off > src_in)
1246 isl_seq_clr(dst+1+dst_nparam+in_off+src_in,
1247 dst_in - in_off - src_in);
1248 isl_seq_clr(dst+1+dst_nparam+dst_in, out_off);
1249 isl_seq_cpy(dst+1+dst_nparam+dst_in+out_off,
1250 src+1+src_nparam+src_in,
1251 isl_min(dst_out-out_off, src_out));
1252 if (dst_out-out_off > src_out)
1253 isl_seq_clr(dst+1+dst_nparam+dst_in+out_off+src_out,
1254 dst_out - out_off - src_out);
1255 isl_seq_clr(dst+1+dst_nparam+dst_in+dst_out, div_off);
1256 isl_seq_cpy(dst+1+dst_nparam+dst_in+dst_out+div_off,
1257 src+1+src_nparam+src_in+src_out,
1258 isl_min(dst_map->extra-div_off, src_map->n_div));
1259 if (dst_map->n_div-div_off > src_map->n_div)
1260 isl_seq_clr(dst+1+dst_nparam+dst_in+dst_out+
1261 div_off+src_map->n_div,
1262 dst_map->n_div - div_off - src_map->n_div);
1265 static void copy_div(struct isl_basic_map *dst_map, isl_int *dst,
1266 struct isl_basic_map *src_map, isl_int *src,
1267 unsigned in_off, unsigned out_off, unsigned div_off)
1269 isl_int_set(dst[0], src[0]);
1270 copy_constraint(dst_map, dst+1, src_map, src+1, in_off, out_off, div_off);
1273 static struct isl_basic_map *add_constraints(struct isl_basic_map *bmap1,
1274 struct isl_basic_map *bmap2, unsigned i_pos, unsigned o_pos)
1279 if (!bmap1 || !bmap2)
1282 div_off = bmap1->n_div;
1284 for (i = 0; i < bmap2->n_eq; ++i) {
1285 int i1 = isl_basic_map_alloc_equality(bmap1);
1288 copy_constraint(bmap1, bmap1->eq[i1], bmap2, bmap2->eq[i],
1289 i_pos, o_pos, div_off);
1292 for (i = 0; i < bmap2->n_ineq; ++i) {
1293 int i1 = isl_basic_map_alloc_inequality(bmap1);
1296 copy_constraint(bmap1, bmap1->ineq[i1], bmap2, bmap2->ineq[i],
1297 i_pos, o_pos, div_off);
1300 for (i = 0; i < bmap2->n_div; ++i) {
1301 int i1 = isl_basic_map_alloc_div(bmap1);
1304 copy_div(bmap1, bmap1->div[i1], bmap2, bmap2->div[i],
1305 i_pos, o_pos, div_off);
1308 isl_basic_map_free(bmap2);
1313 isl_basic_map_free(bmap1);
1314 isl_basic_map_free(bmap2);
1318 struct isl_basic_set *isl_basic_set_add_constraints(struct isl_basic_set *bset1,
1319 struct isl_basic_set *bset2, unsigned pos)
1321 return (struct isl_basic_set *)
1322 add_constraints((struct isl_basic_map *)bset1,
1323 (struct isl_basic_map *)bset2, 0, pos);
1326 struct isl_basic_map *isl_basic_map_extend_space(struct isl_basic_map *base,
1327 __isl_take isl_space *dim, unsigned extra,
1328 unsigned n_eq, unsigned n_ineq)
1330 struct isl_basic_map *ext;
1340 dims_ok = isl_space_is_equal(base->dim, dim) &&
1341 base->extra >= base->n_div + extra;
1343 if (dims_ok && room_for_con(base, n_eq + n_ineq) &&
1344 room_for_ineq(base, n_ineq)) {
1345 isl_space_free(dim);
1349 isl_assert(base->ctx, base->dim->nparam <= dim->nparam, goto error);
1350 isl_assert(base->ctx, base->dim->n_in <= dim->n_in, goto error);
1351 isl_assert(base->ctx, base->dim->n_out <= dim->n_out, goto error);
1352 extra += base->extra;
1354 n_ineq += base->n_ineq;
1356 ext = isl_basic_map_alloc_space(dim, extra, n_eq, n_ineq);
1362 ext->sample = isl_vec_copy(base->sample);
1363 flags = base->flags;
1364 ext = add_constraints(ext, base, 0, 0);
1367 ISL_F_CLR(ext, ISL_BASIC_SET_FINAL);
1373 isl_space_free(dim);
1374 isl_basic_map_free(base);
1378 struct isl_basic_set *isl_basic_set_extend_space(struct isl_basic_set *base,
1379 __isl_take isl_space *dim, unsigned extra,
1380 unsigned n_eq, unsigned n_ineq)
1382 return (struct isl_basic_set *)
1383 isl_basic_map_extend_space((struct isl_basic_map *)base, dim,
1384 extra, n_eq, n_ineq);
1387 struct isl_basic_map *isl_basic_map_extend_constraints(
1388 struct isl_basic_map *base, unsigned n_eq, unsigned n_ineq)
1392 return isl_basic_map_extend_space(base, isl_space_copy(base->dim),
1396 struct isl_basic_map *isl_basic_map_extend(struct isl_basic_map *base,
1397 unsigned nparam, unsigned n_in, unsigned n_out, unsigned extra,
1398 unsigned n_eq, unsigned n_ineq)
1400 struct isl_basic_map *bmap;
1405 dim = isl_space_alloc(base->ctx, nparam, n_in, n_out);
1409 bmap = isl_basic_map_extend_space(base, dim, extra, n_eq, n_ineq);
1412 isl_basic_map_free(base);
1416 struct isl_basic_set *isl_basic_set_extend(struct isl_basic_set *base,
1417 unsigned nparam, unsigned dim, unsigned extra,
1418 unsigned n_eq, unsigned n_ineq)
1420 return (struct isl_basic_set *)
1421 isl_basic_map_extend((struct isl_basic_map *)base,
1422 nparam, 0, dim, extra, n_eq, n_ineq);
1425 struct isl_basic_set *isl_basic_set_extend_constraints(
1426 struct isl_basic_set *base, unsigned n_eq, unsigned n_ineq)
1428 return (struct isl_basic_set *)
1429 isl_basic_map_extend_constraints((struct isl_basic_map *)base,
1433 struct isl_basic_set *isl_basic_set_cow(struct isl_basic_set *bset)
1435 return (struct isl_basic_set *)
1436 isl_basic_map_cow((struct isl_basic_map *)bset);
1439 struct isl_basic_map *isl_basic_map_cow(struct isl_basic_map *bmap)
1444 if (bmap->ref > 1) {
1446 bmap = isl_basic_map_dup(bmap);
1449 ISL_F_CLR(bmap, ISL_BASIC_SET_FINAL);
1453 struct isl_set *isl_set_cow(struct isl_set *set)
1461 return isl_set_dup(set);
1464 struct isl_map *isl_map_cow(struct isl_map *map)
1472 return isl_map_dup(map);
1475 static void swap_vars(struct isl_blk blk, isl_int *a,
1476 unsigned a_len, unsigned b_len)
1478 isl_seq_cpy(blk.data, a+a_len, b_len);
1479 isl_seq_cpy(blk.data+b_len, a, a_len);
1480 isl_seq_cpy(a, blk.data, b_len+a_len);
1483 static __isl_give isl_basic_map *isl_basic_map_swap_vars(
1484 __isl_take isl_basic_map *bmap, unsigned pos, unsigned n1, unsigned n2)
1492 isl_assert(bmap->ctx,
1493 pos + n1 + n2 <= 1 + isl_basic_map_total_dim(bmap), goto error);
1495 if (n1 == 0 || n2 == 0)
1498 bmap = isl_basic_map_cow(bmap);
1502 blk = isl_blk_alloc(bmap->ctx, n1 + n2);
1503 if (isl_blk_is_error(blk))
1506 for (i = 0; i < bmap->n_eq; ++i)
1508 bmap->eq[i] + pos, n1, n2);
1510 for (i = 0; i < bmap->n_ineq; ++i)
1512 bmap->ineq[i] + pos, n1, n2);
1514 for (i = 0; i < bmap->n_div; ++i)
1516 bmap->div[i]+1 + pos, n1, n2);
1518 isl_blk_free(bmap->ctx, blk);
1520 ISL_F_CLR(bmap, ISL_BASIC_SET_NORMALIZED);
1521 bmap = isl_basic_map_gauss(bmap, NULL);
1522 return isl_basic_map_finalize(bmap);
1524 isl_basic_map_free(bmap);
1528 static __isl_give isl_basic_set *isl_basic_set_swap_vars(
1529 __isl_take isl_basic_set *bset, unsigned n)
1534 nparam = isl_basic_set_n_param(bset);
1535 dim = isl_basic_set_n_dim(bset);
1536 isl_assert(bset->ctx, n <= dim, goto error);
1538 return isl_basic_map_swap_vars(bset, 1 + nparam, n, dim - n);
1540 isl_basic_set_free(bset);
1544 struct isl_basic_map *isl_basic_map_set_to_empty(struct isl_basic_map *bmap)
1550 total = isl_basic_map_total_dim(bmap);
1551 isl_basic_map_free_div(bmap, bmap->n_div);
1552 isl_basic_map_free_inequality(bmap, bmap->n_ineq);
1554 isl_basic_map_free_equality(bmap, bmap->n_eq-1);
1556 i = isl_basic_map_alloc_equality(bmap);
1560 isl_int_set_si(bmap->eq[i][0], 1);
1561 isl_seq_clr(bmap->eq[i]+1, total);
1562 ISL_F_SET(bmap, ISL_BASIC_MAP_EMPTY);
1563 isl_vec_free(bmap->sample);
1564 bmap->sample = NULL;
1565 return isl_basic_map_finalize(bmap);
1567 isl_basic_map_free(bmap);
1571 struct isl_basic_set *isl_basic_set_set_to_empty(struct isl_basic_set *bset)
1573 return (struct isl_basic_set *)
1574 isl_basic_map_set_to_empty((struct isl_basic_map *)bset);
1577 void isl_basic_map_swap_div(struct isl_basic_map *bmap, int a, int b)
1580 unsigned off = isl_space_dim(bmap->dim, isl_dim_all);
1581 isl_int *t = bmap->div[a];
1582 bmap->div[a] = bmap->div[b];
1585 for (i = 0; i < bmap->n_eq; ++i)
1586 isl_int_swap(bmap->eq[i][1+off+a], bmap->eq[i][1+off+b]);
1588 for (i = 0; i < bmap->n_ineq; ++i)
1589 isl_int_swap(bmap->ineq[i][1+off+a], bmap->ineq[i][1+off+b]);
1591 for (i = 0; i < bmap->n_div; ++i)
1592 isl_int_swap(bmap->div[i][1+1+off+a], bmap->div[i][1+1+off+b]);
1593 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
1596 /* Eliminate the specified n dimensions starting at first from the
1597 * constraints using Fourier-Motzkin. The dimensions themselves
1600 __isl_give isl_map *isl_map_eliminate(__isl_take isl_map *map,
1601 enum isl_dim_type type, unsigned first, unsigned n)
1610 map = isl_map_cow(map);
1614 for (i = 0; i < map->n; ++i) {
1615 map->p[i] = isl_basic_map_eliminate(map->p[i], type, first, n);
1625 /* Eliminate the specified n dimensions starting at first from the
1626 * constraints using Fourier-Motzkin. The dimensions themselves
1629 __isl_give isl_set *isl_set_eliminate(__isl_take isl_set *set,
1630 enum isl_dim_type type, unsigned first, unsigned n)
1632 return (isl_set *)isl_map_eliminate((isl_map *)set, type, first, n);
1635 /* Eliminate the specified n dimensions starting at first from the
1636 * constraints using Fourier-Motzkin. The dimensions themselves
1639 __isl_give isl_set *isl_set_eliminate_dims(__isl_take isl_set *set,
1640 unsigned first, unsigned n)
1642 return isl_set_eliminate(set, isl_dim_set, first, n);
1645 __isl_give isl_basic_map *isl_basic_map_remove_divs(
1646 __isl_take isl_basic_map *bmap)
1650 bmap = isl_basic_map_eliminate_vars(bmap,
1651 isl_space_dim(bmap->dim, isl_dim_all), bmap->n_div);
1655 return isl_basic_map_finalize(bmap);
1658 __isl_give isl_basic_set *isl_basic_set_remove_divs(
1659 __isl_take isl_basic_set *bset)
1661 return (struct isl_basic_set *)isl_basic_map_remove_divs(
1662 (struct isl_basic_map *)bset);
1665 __isl_give isl_map *isl_map_remove_divs(__isl_take isl_map *map)
1674 map = isl_map_cow(map);
1678 for (i = 0; i < map->n; ++i) {
1679 map->p[i] = isl_basic_map_remove_divs(map->p[i]);
1689 __isl_give isl_set *isl_set_remove_divs(__isl_take isl_set *set)
1691 return isl_map_remove_divs(set);
1694 struct isl_basic_map *isl_basic_map_remove_dims(struct isl_basic_map *bmap,
1695 enum isl_dim_type type, unsigned first, unsigned n)
1699 isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
1701 if (n == 0 && !isl_space_is_named_or_nested(bmap->dim, type))
1703 bmap = isl_basic_map_eliminate_vars(bmap,
1704 isl_basic_map_offset(bmap, type) - 1 + first, n);
1707 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_EMPTY) && type == isl_dim_div)
1709 bmap = isl_basic_map_drop(bmap, type, first, n);
1712 isl_basic_map_free(bmap);
1716 /* Return true if the definition of the given div (recursively) involves
1717 * any of the given variables.
1719 static int div_involves_vars(__isl_keep isl_basic_map *bmap, int div,
1720 unsigned first, unsigned n)
1723 unsigned div_offset = isl_basic_map_offset(bmap, isl_dim_div);
1725 if (isl_int_is_zero(bmap->div[div][0]))
1727 if (isl_seq_first_non_zero(bmap->div[div] + 1 + first, n) >= 0)
1730 for (i = bmap->n_div - 1; i >= 0; --i) {
1731 if (isl_int_is_zero(bmap->div[div][1 + div_offset + i]))
1733 if (div_involves_vars(bmap, i, first, n))
1740 /* Remove all divs (recursively) involving any of the given dimensions
1741 * in their definitions.
1743 __isl_give isl_basic_map *isl_basic_map_remove_divs_involving_dims(
1744 __isl_take isl_basic_map *bmap,
1745 enum isl_dim_type type, unsigned first, unsigned n)
1751 isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
1753 first += isl_basic_map_offset(bmap, type);
1755 for (i = bmap->n_div - 1; i >= 0; --i) {
1756 if (!div_involves_vars(bmap, i, first, n))
1758 bmap = isl_basic_map_remove_dims(bmap, isl_dim_div, i, 1);
1766 isl_basic_map_free(bmap);
1770 __isl_give isl_map *isl_map_remove_divs_involving_dims(__isl_take isl_map *map,
1771 enum isl_dim_type type, unsigned first, unsigned n)
1780 map = isl_map_cow(map);
1784 for (i = 0; i < map->n; ++i) {
1785 map->p[i] = isl_basic_map_remove_divs_involving_dims(map->p[i],
1796 __isl_give isl_set *isl_set_remove_divs_involving_dims(__isl_take isl_set *set,
1797 enum isl_dim_type type, unsigned first, unsigned n)
1799 return (isl_set *)isl_map_remove_divs_involving_dims((isl_map *)set,
1803 /* Does the desciption of "bmap" depend on the specified dimensions?
1804 * We also check whether the dimensions appear in any of the div definitions.
1805 * In principle there is no need for this check. If the dimensions appear
1806 * in a div definition, they also appear in the defining constraints of that
1809 int isl_basic_map_involves_dims(__isl_keep isl_basic_map *bmap,
1810 enum isl_dim_type type, unsigned first, unsigned n)
1817 if (first + n > isl_basic_map_dim(bmap, type))
1818 isl_die(bmap->ctx, isl_error_invalid,
1819 "index out of bounds", return -1);
1821 first += isl_basic_map_offset(bmap, type);
1822 for (i = 0; i < bmap->n_eq; ++i)
1823 if (isl_seq_first_non_zero(bmap->eq[i] + first, n) >= 0)
1825 for (i = 0; i < bmap->n_ineq; ++i)
1826 if (isl_seq_first_non_zero(bmap->ineq[i] + first, n) >= 0)
1828 for (i = 0; i < bmap->n_div; ++i) {
1829 if (isl_int_is_zero(bmap->div[i][0]))
1831 if (isl_seq_first_non_zero(bmap->div[i] + 1 + first, n) >= 0)
1838 int isl_map_involves_dims(__isl_keep isl_map *map,
1839 enum isl_dim_type type, unsigned first, unsigned n)
1846 if (first + n > isl_map_dim(map, type))
1847 isl_die(map->ctx, isl_error_invalid,
1848 "index out of bounds", return -1);
1850 for (i = 0; i < map->n; ++i) {
1851 int involves = isl_basic_map_involves_dims(map->p[i],
1853 if (involves < 0 || involves)
1860 int isl_basic_set_involves_dims(__isl_keep isl_basic_set *bset,
1861 enum isl_dim_type type, unsigned first, unsigned n)
1863 return isl_basic_map_involves_dims(bset, type, first, n);
1866 int isl_set_involves_dims(__isl_keep isl_set *set,
1867 enum isl_dim_type type, unsigned first, unsigned n)
1869 return isl_map_involves_dims(set, type, first, n);
1872 /* Return true if the definition of the given div is unknown or depends
1875 static int div_is_unknown(__isl_keep isl_basic_map *bmap, int div)
1878 unsigned div_offset = isl_basic_map_offset(bmap, isl_dim_div);
1880 if (isl_int_is_zero(bmap->div[div][0]))
1883 for (i = bmap->n_div - 1; i >= 0; --i) {
1884 if (isl_int_is_zero(bmap->div[div][1 + div_offset + i]))
1886 if (div_is_unknown(bmap, i))
1893 /* Remove all divs that are unknown or defined in terms of unknown divs.
1895 __isl_give isl_basic_map *isl_basic_map_remove_unknown_divs(
1896 __isl_take isl_basic_map *bmap)
1903 for (i = bmap->n_div - 1; i >= 0; --i) {
1904 if (!div_is_unknown(bmap, i))
1906 bmap = isl_basic_map_remove_dims(bmap, isl_dim_div, i, 1);
1915 __isl_give isl_map *isl_map_remove_unknown_divs(__isl_take isl_map *map)
1924 map = isl_map_cow(map);
1928 for (i = 0; i < map->n; ++i) {
1929 map->p[i] = isl_basic_map_remove_unknown_divs(map->p[i]);
1939 __isl_give isl_set *isl_set_remove_unknown_divs(__isl_take isl_set *set)
1941 return (isl_set *)isl_map_remove_unknown_divs((isl_map *)set);
1944 __isl_give isl_basic_set *isl_basic_set_remove_dims(
1945 __isl_take isl_basic_set *bset,
1946 enum isl_dim_type type, unsigned first, unsigned n)
1948 return (isl_basic_set *)
1949 isl_basic_map_remove_dims((isl_basic_map *)bset, type, first, n);
1952 struct isl_map *isl_map_remove_dims(struct isl_map *map,
1953 enum isl_dim_type type, unsigned first, unsigned n)
1960 map = isl_map_cow(map);
1963 isl_assert(map->ctx, first + n <= isl_map_dim(map, type), goto error);
1965 for (i = 0; i < map->n; ++i) {
1966 map->p[i] = isl_basic_map_eliminate_vars(map->p[i],
1967 isl_basic_map_offset(map->p[i], type) - 1 + first, n);
1971 map = isl_map_drop(map, type, first, n);
1978 __isl_give isl_set *isl_set_remove_dims(__isl_take isl_set *bset,
1979 enum isl_dim_type type, unsigned first, unsigned n)
1981 return (isl_set *)isl_map_remove_dims((isl_map *)bset, type, first, n);
1984 /* Project out n inputs starting at first using Fourier-Motzkin */
1985 struct isl_map *isl_map_remove_inputs(struct isl_map *map,
1986 unsigned first, unsigned n)
1988 return isl_map_remove_dims(map, isl_dim_in, first, n);
1991 static void dump_term(struct isl_basic_map *bmap,
1992 isl_int c, int pos, FILE *out)
1995 unsigned in = isl_basic_map_n_in(bmap);
1996 unsigned dim = in + isl_basic_map_n_out(bmap);
1997 unsigned nparam = isl_basic_map_n_param(bmap);
1999 isl_int_print(out, c, 0);
2001 if (!isl_int_is_one(c))
2002 isl_int_print(out, c, 0);
2003 if (pos < 1 + nparam) {
2004 name = isl_space_get_dim_name(bmap->dim,
2005 isl_dim_param, pos - 1);
2007 fprintf(out, "%s", name);
2009 fprintf(out, "p%d", pos - 1);
2010 } else if (pos < 1 + nparam + in)
2011 fprintf(out, "i%d", pos - 1 - nparam);
2012 else if (pos < 1 + nparam + dim)
2013 fprintf(out, "o%d", pos - 1 - nparam - in);
2015 fprintf(out, "e%d", pos - 1 - nparam - dim);
2019 static void dump_constraint_sign(struct isl_basic_map *bmap, isl_int *c,
2020 int sign, FILE *out)
2024 unsigned len = 1 + isl_basic_map_total_dim(bmap);
2028 for (i = 0, first = 1; i < len; ++i) {
2029 if (isl_int_sgn(c[i]) * sign <= 0)
2032 fprintf(out, " + ");
2034 isl_int_abs(v, c[i]);
2035 dump_term(bmap, v, i, out);
2042 static void dump_constraint(struct isl_basic_map *bmap, isl_int *c,
2043 const char *op, FILE *out, int indent)
2047 fprintf(out, "%*s", indent, "");
2049 dump_constraint_sign(bmap, c, 1, out);
2050 fprintf(out, " %s ", op);
2051 dump_constraint_sign(bmap, c, -1, out);
2055 for (i = bmap->n_div; i < bmap->extra; ++i) {
2056 if (isl_int_is_zero(c[1+isl_space_dim(bmap->dim, isl_dim_all)+i]))
2058 fprintf(out, "%*s", indent, "");
2059 fprintf(out, "ERROR: unused div coefficient not zero\n");
2064 static void dump_constraints(struct isl_basic_map *bmap,
2065 isl_int **c, unsigned n,
2066 const char *op, FILE *out, int indent)
2070 for (i = 0; i < n; ++i)
2071 dump_constraint(bmap, c[i], op, out, indent);
2074 static void dump_affine(struct isl_basic_map *bmap, isl_int *exp, FILE *out)
2078 unsigned total = isl_basic_map_total_dim(bmap);
2080 for (j = 0; j < 1 + total; ++j) {
2081 if (isl_int_is_zero(exp[j]))
2083 if (!first && isl_int_is_pos(exp[j]))
2085 dump_term(bmap, exp[j], j, out);
2090 static void dump(struct isl_basic_map *bmap, FILE *out, int indent)
2094 dump_constraints(bmap, bmap->eq, bmap->n_eq, "=", out, indent);
2095 dump_constraints(bmap, bmap->ineq, bmap->n_ineq, ">=", out, indent);
2097 for (i = 0; i < bmap->n_div; ++i) {
2098 fprintf(out, "%*s", indent, "");
2099 fprintf(out, "e%d = [(", i);
2100 dump_affine(bmap, bmap->div[i]+1, out);
2102 isl_int_print(out, bmap->div[i][0], 0);
2103 fprintf(out, "]\n");
2107 void isl_basic_set_print_internal(struct isl_basic_set *bset,
2108 FILE *out, int indent)
2111 fprintf(out, "null basic set\n");
2115 fprintf(out, "%*s", indent, "");
2116 fprintf(out, "ref: %d, nparam: %d, dim: %d, extra: %d, flags: %x\n",
2117 bset->ref, bset->dim->nparam, bset->dim->n_out,
2118 bset->extra, bset->flags);
2119 dump((struct isl_basic_map *)bset, out, indent);
2122 void isl_basic_map_print_internal(struct isl_basic_map *bmap,
2123 FILE *out, int indent)
2126 fprintf(out, "null basic map\n");
2130 fprintf(out, "%*s", indent, "");
2131 fprintf(out, "ref: %d, nparam: %d, in: %d, out: %d, extra: %d, "
2132 "flags: %x, n_name: %d\n",
2134 bmap->dim->nparam, bmap->dim->n_in, bmap->dim->n_out,
2135 bmap->extra, bmap->flags, bmap->dim->n_id);
2136 dump(bmap, out, indent);
2139 int isl_inequality_negate(struct isl_basic_map *bmap, unsigned pos)
2144 total = isl_basic_map_total_dim(bmap);
2145 isl_assert(bmap->ctx, pos < bmap->n_ineq, return -1);
2146 isl_seq_neg(bmap->ineq[pos], bmap->ineq[pos], 1 + total);
2147 isl_int_sub_ui(bmap->ineq[pos][0], bmap->ineq[pos][0], 1);
2148 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
2152 __isl_give isl_set *isl_set_alloc_space(__isl_take isl_space *dim, int n,
2155 struct isl_set *set;
2159 isl_assert(dim->ctx, dim->n_in == 0, goto error);
2160 isl_assert(dim->ctx, n >= 0, goto error);
2161 set = isl_alloc(dim->ctx, struct isl_set,
2162 sizeof(struct isl_set) +
2163 (n - 1) * sizeof(struct isl_basic_set *));
2167 set->ctx = dim->ctx;
2168 isl_ctx_ref(set->ctx);
2176 isl_space_free(dim);
2180 struct isl_set *isl_set_alloc(struct isl_ctx *ctx,
2181 unsigned nparam, unsigned dim, int n, unsigned flags)
2183 struct isl_set *set;
2186 dims = isl_space_alloc(ctx, nparam, 0, dim);
2190 set = isl_set_alloc_space(dims, n, flags);
2194 /* Make sure "map" has room for at least "n" more basic maps.
2196 struct isl_map *isl_map_grow(struct isl_map *map, int n)
2199 struct isl_map *grown = NULL;
2203 isl_assert(map->ctx, n >= 0, goto error);
2204 if (map->n + n <= map->size)
2206 grown = isl_map_alloc_space(isl_map_get_space(map), map->n + n, map->flags);
2209 for (i = 0; i < map->n; ++i) {
2210 grown->p[i] = isl_basic_map_copy(map->p[i]);
2218 isl_map_free(grown);
2223 /* Make sure "set" has room for at least "n" more basic sets.
2225 struct isl_set *isl_set_grow(struct isl_set *set, int n)
2227 return (struct isl_set *)isl_map_grow((struct isl_map *)set, n);
2230 struct isl_set *isl_set_dup(struct isl_set *set)
2233 struct isl_set *dup;
2238 dup = isl_set_alloc_space(isl_space_copy(set->dim), set->n, set->flags);
2241 for (i = 0; i < set->n; ++i)
2242 dup = isl_set_add_basic_set(dup, isl_basic_set_copy(set->p[i]));
2246 struct isl_set *isl_set_from_basic_set(struct isl_basic_set *bset)
2248 return isl_map_from_basic_map(bset);
2251 struct isl_map *isl_map_from_basic_map(struct isl_basic_map *bmap)
2253 struct isl_map *map;
2258 map = isl_map_alloc_space(isl_space_copy(bmap->dim), 1, ISL_MAP_DISJOINT);
2259 return isl_map_add_basic_map(map, bmap);
2262 __isl_give isl_set *isl_set_add_basic_set(__isl_take isl_set *set,
2263 __isl_take isl_basic_set *bset)
2265 return (struct isl_set *)isl_map_add_basic_map((struct isl_map *)set,
2266 (struct isl_basic_map *)bset);
2269 void isl_set_free(struct isl_set *set)
2279 isl_ctx_deref(set->ctx);
2280 for (i = 0; i < set->n; ++i)
2281 isl_basic_set_free(set->p[i]);
2282 isl_space_free(set->dim);
2286 void isl_set_print_internal(struct isl_set *set, FILE *out, int indent)
2291 fprintf(out, "null set\n");
2295 fprintf(out, "%*s", indent, "");
2296 fprintf(out, "ref: %d, n: %d, nparam: %d, dim: %d, flags: %x\n",
2297 set->ref, set->n, set->dim->nparam, set->dim->n_out,
2299 for (i = 0; i < set->n; ++i) {
2300 fprintf(out, "%*s", indent, "");
2301 fprintf(out, "basic set %d:\n", i);
2302 isl_basic_set_print_internal(set->p[i], out, indent+4);
2306 void isl_map_print_internal(struct isl_map *map, FILE *out, int indent)
2311 fprintf(out, "null map\n");
2315 fprintf(out, "%*s", indent, "");
2316 fprintf(out, "ref: %d, n: %d, nparam: %d, in: %d, out: %d, "
2317 "flags: %x, n_name: %d\n",
2318 map->ref, map->n, map->dim->nparam, map->dim->n_in,
2319 map->dim->n_out, map->flags, map->dim->n_id);
2320 for (i = 0; i < map->n; ++i) {
2321 fprintf(out, "%*s", indent, "");
2322 fprintf(out, "basic map %d:\n", i);
2323 isl_basic_map_print_internal(map->p[i], out, indent+4);
2327 struct isl_basic_map *isl_basic_map_intersect_domain(
2328 struct isl_basic_map *bmap, struct isl_basic_set *bset)
2330 struct isl_basic_map *bmap_domain;
2335 isl_assert(bset->ctx, isl_space_match(bmap->dim, isl_dim_param,
2336 bset->dim, isl_dim_param), goto error);
2338 if (isl_space_dim(bset->dim, isl_dim_set) != 0)
2339 isl_assert(bset->ctx,
2340 isl_basic_map_compatible_domain(bmap, bset), goto error);
2342 bmap = isl_basic_map_cow(bmap);
2345 bmap = isl_basic_map_extend_space(bmap, isl_space_copy(bmap->dim),
2346 bset->n_div, bset->n_eq, bset->n_ineq);
2347 bmap_domain = isl_basic_map_from_domain(bset);
2348 bmap = add_constraints(bmap, bmap_domain, 0, 0);
2350 bmap = isl_basic_map_simplify(bmap);
2351 return isl_basic_map_finalize(bmap);
2353 isl_basic_map_free(bmap);
2354 isl_basic_set_free(bset);
2358 struct isl_basic_map *isl_basic_map_intersect_range(
2359 struct isl_basic_map *bmap, struct isl_basic_set *bset)
2361 struct isl_basic_map *bmap_range;
2366 isl_assert(bset->ctx, isl_space_match(bmap->dim, isl_dim_param,
2367 bset->dim, isl_dim_param), goto error);
2369 if (isl_space_dim(bset->dim, isl_dim_set) != 0)
2370 isl_assert(bset->ctx,
2371 isl_basic_map_compatible_range(bmap, bset), goto error);
2373 if (isl_basic_set_is_universe(bset)) {
2374 isl_basic_set_free(bset);
2378 bmap = isl_basic_map_cow(bmap);
2381 bmap = isl_basic_map_extend_space(bmap, isl_space_copy(bmap->dim),
2382 bset->n_div, bset->n_eq, bset->n_ineq);
2383 bmap_range = isl_basic_map_from_basic_set(bset, isl_space_copy(bset->dim));
2384 bmap = add_constraints(bmap, bmap_range, 0, 0);
2386 bmap = isl_basic_map_simplify(bmap);
2387 return isl_basic_map_finalize(bmap);
2389 isl_basic_map_free(bmap);
2390 isl_basic_set_free(bset);
2394 int isl_basic_map_contains(struct isl_basic_map *bmap, struct isl_vec *vec)
2400 total = 1 + isl_basic_map_total_dim(bmap);
2401 if (total != vec->size)
2406 for (i = 0; i < bmap->n_eq; ++i) {
2407 isl_seq_inner_product(vec->el, bmap->eq[i], total, &s);
2408 if (!isl_int_is_zero(s)) {
2414 for (i = 0; i < bmap->n_ineq; ++i) {
2415 isl_seq_inner_product(vec->el, bmap->ineq[i], total, &s);
2416 if (isl_int_is_neg(s)) {
2427 int isl_basic_set_contains(struct isl_basic_set *bset, struct isl_vec *vec)
2429 return isl_basic_map_contains((struct isl_basic_map *)bset, vec);
2432 struct isl_basic_map *isl_basic_map_intersect(
2433 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
2435 struct isl_vec *sample = NULL;
2437 if (!bmap1 || !bmap2)
2440 isl_assert(bmap1->ctx, isl_space_match(bmap1->dim, isl_dim_param,
2441 bmap2->dim, isl_dim_param), goto error);
2442 if (isl_space_dim(bmap1->dim, isl_dim_all) ==
2443 isl_space_dim(bmap1->dim, isl_dim_param) &&
2444 isl_space_dim(bmap2->dim, isl_dim_all) !=
2445 isl_space_dim(bmap2->dim, isl_dim_param))
2446 return isl_basic_map_intersect(bmap2, bmap1);
2448 if (isl_space_dim(bmap2->dim, isl_dim_all) !=
2449 isl_space_dim(bmap2->dim, isl_dim_param))
2450 isl_assert(bmap1->ctx,
2451 isl_space_is_equal(bmap1->dim, bmap2->dim), goto error);
2453 if (bmap1->sample &&
2454 isl_basic_map_contains(bmap1, bmap1->sample) > 0 &&
2455 isl_basic_map_contains(bmap2, bmap1->sample) > 0)
2456 sample = isl_vec_copy(bmap1->sample);
2457 else if (bmap2->sample &&
2458 isl_basic_map_contains(bmap1, bmap2->sample) > 0 &&
2459 isl_basic_map_contains(bmap2, bmap2->sample) > 0)
2460 sample = isl_vec_copy(bmap2->sample);
2462 bmap1 = isl_basic_map_cow(bmap1);
2465 bmap1 = isl_basic_map_extend_space(bmap1, isl_space_copy(bmap1->dim),
2466 bmap2->n_div, bmap2->n_eq, bmap2->n_ineq);
2467 bmap1 = add_constraints(bmap1, bmap2, 0, 0);
2470 isl_vec_free(sample);
2472 isl_vec_free(bmap1->sample);
2473 bmap1->sample = sample;
2476 bmap1 = isl_basic_map_simplify(bmap1);
2477 return isl_basic_map_finalize(bmap1);
2480 isl_vec_free(sample);
2481 isl_basic_map_free(bmap1);
2482 isl_basic_map_free(bmap2);
2486 struct isl_basic_set *isl_basic_set_intersect(
2487 struct isl_basic_set *bset1, struct isl_basic_set *bset2)
2489 return (struct isl_basic_set *)
2490 isl_basic_map_intersect(
2491 (struct isl_basic_map *)bset1,
2492 (struct isl_basic_map *)bset2);
2495 __isl_give isl_basic_set *isl_basic_set_intersect_params(
2496 __isl_take isl_basic_set *bset1, __isl_take isl_basic_set *bset2)
2498 return isl_basic_set_intersect(bset1, bset2);
2501 /* Special case of isl_map_intersect, where both map1 and map2
2502 * are convex, without any divs and such that either map1 or map2
2503 * contains a single constraint. This constraint is then simply
2504 * added to the other map.
2506 static __isl_give isl_map *map_intersect_add_constraint(
2507 __isl_take isl_map *map1, __isl_take isl_map *map2)
2509 isl_assert(map1->ctx, map1->n == 1, goto error);
2510 isl_assert(map2->ctx, map1->n == 1, goto error);
2511 isl_assert(map1->ctx, map1->p[0]->n_div == 0, goto error);
2512 isl_assert(map2->ctx, map1->p[0]->n_div == 0, goto error);
2514 if (map2->p[0]->n_eq + map2->p[0]->n_ineq != 1)
2515 return isl_map_intersect(map2, map1);
2517 isl_assert(map2->ctx,
2518 map2->p[0]->n_eq + map2->p[0]->n_ineq == 1, goto error);
2520 map1 = isl_map_cow(map1);
2523 if (isl_map_plain_is_empty(map1)) {
2527 map1->p[0] = isl_basic_map_cow(map1->p[0]);
2528 if (map2->p[0]->n_eq == 1)
2529 map1->p[0] = isl_basic_map_add_eq(map1->p[0], map2->p[0]->eq[0]);
2531 map1->p[0] = isl_basic_map_add_ineq(map1->p[0],
2532 map2->p[0]->ineq[0]);
2534 map1->p[0] = isl_basic_map_simplify(map1->p[0]);
2535 map1->p[0] = isl_basic_map_finalize(map1->p[0]);
2539 if (isl_basic_map_plain_is_empty(map1->p[0])) {
2540 isl_basic_map_free(map1->p[0]);
2553 /* map2 may be either a parameter domain or a map living in the same
2556 static __isl_give isl_map *map_intersect_internal(__isl_take isl_map *map1,
2557 __isl_take isl_map *map2)
2560 struct isl_map *result;
2566 if (isl_map_plain_is_empty(map1) &&
2567 isl_space_is_equal(map1->dim, map2->dim)) {
2571 if (isl_map_plain_is_empty(map2) &&
2572 isl_space_is_equal(map1->dim, map2->dim)) {
2577 if (map1->n == 1 && map2->n == 1 &&
2578 map1->p[0]->n_div == 0 && map2->p[0]->n_div == 0 &&
2579 isl_space_is_equal(map1->dim, map2->dim) &&
2580 (map1->p[0]->n_eq + map1->p[0]->n_ineq == 1 ||
2581 map2->p[0]->n_eq + map2->p[0]->n_ineq == 1))
2582 return map_intersect_add_constraint(map1, map2);
2584 if (isl_space_dim(map2->dim, isl_dim_all) !=
2585 isl_space_dim(map2->dim, isl_dim_param))
2586 isl_assert(map1->ctx,
2587 isl_space_is_equal(map1->dim, map2->dim), goto error);
2589 if (ISL_F_ISSET(map1, ISL_MAP_DISJOINT) &&
2590 ISL_F_ISSET(map2, ISL_MAP_DISJOINT))
2591 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
2593 result = isl_map_alloc_space(isl_space_copy(map1->dim),
2594 map1->n * map2->n, flags);
2597 for (i = 0; i < map1->n; ++i)
2598 for (j = 0; j < map2->n; ++j) {
2599 struct isl_basic_map *part;
2600 part = isl_basic_map_intersect(
2601 isl_basic_map_copy(map1->p[i]),
2602 isl_basic_map_copy(map2->p[j]));
2603 if (isl_basic_map_is_empty(part))
2604 isl_basic_map_free(part);
2606 result = isl_map_add_basic_map(result, part);
2619 static __isl_give isl_map *map_intersect(__isl_take isl_map *map1,
2620 __isl_take isl_map *map2)
2624 if (!isl_space_is_equal(map1->dim, map2->dim))
2625 isl_die(isl_map_get_ctx(map1), isl_error_invalid,
2626 "spaces don't match", goto error);
2627 return map_intersect_internal(map1, map2);
2634 __isl_give isl_map *isl_map_intersect(__isl_take isl_map *map1,
2635 __isl_take isl_map *map2)
2637 return isl_map_align_params_map_map_and(map1, map2, &map_intersect);
2640 struct isl_set *isl_set_intersect(struct isl_set *set1, struct isl_set *set2)
2642 return (struct isl_set *)
2643 isl_map_intersect((struct isl_map *)set1,
2644 (struct isl_map *)set2);
2647 /* map_intersect_internal accepts intersections
2648 * with parameter domains, so we can just call that function.
2650 static __isl_give isl_map *map_intersect_params(__isl_take isl_map *map,
2651 __isl_take isl_set *params)
2653 return map_intersect_internal(map, params);
2656 __isl_give isl_map *isl_map_intersect_params(__isl_take isl_map *map1,
2657 __isl_take isl_map *map2)
2659 return isl_map_align_params_map_map_and(map1, map2, &map_intersect_params);
2662 __isl_give isl_set *isl_set_intersect_params(__isl_take isl_set *set,
2663 __isl_take isl_set *params)
2665 return isl_map_intersect_params(set, params);
2668 struct isl_basic_map *isl_basic_map_reverse(struct isl_basic_map *bmap)
2671 struct isl_basic_set *bset;
2676 bmap = isl_basic_map_cow(bmap);
2679 dim = isl_space_reverse(isl_space_copy(bmap->dim));
2680 in = isl_basic_map_n_in(bmap);
2681 bset = isl_basic_set_from_basic_map(bmap);
2682 bset = isl_basic_set_swap_vars(bset, in);
2683 return isl_basic_map_from_basic_set(bset, dim);
2686 static __isl_give isl_basic_map *basic_map_space_reset(
2687 __isl_take isl_basic_map *bmap, enum isl_dim_type type)
2691 if (!isl_space_is_named_or_nested(bmap->dim, type))
2694 space = isl_basic_map_get_space(bmap);
2695 space = isl_space_reset(space, type);
2696 bmap = isl_basic_map_reset_space(bmap, space);
2700 __isl_give isl_basic_map *isl_basic_map_insert(__isl_take isl_basic_map *bmap,
2701 enum isl_dim_type type, unsigned pos, unsigned n)
2704 struct isl_basic_map *res;
2705 struct isl_dim_map *dim_map;
2706 unsigned total, off;
2707 enum isl_dim_type t;
2710 return basic_map_space_reset(bmap, type);
2715 res_dim = isl_space_insert_dims(isl_basic_map_get_space(bmap), type, pos, n);
2717 total = isl_basic_map_total_dim(bmap) + n;
2718 dim_map = isl_dim_map_alloc(bmap->ctx, total);
2720 for (t = isl_dim_param; t <= isl_dim_out; ++t) {
2722 isl_dim_map_dim(dim_map, bmap->dim, t, off);
2724 unsigned size = isl_basic_map_dim(bmap, t);
2725 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2727 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2728 pos, size - pos, off + pos + n);
2730 off += isl_space_dim(res_dim, t);
2732 isl_dim_map_div(dim_map, bmap, off);
2734 res = isl_basic_map_alloc_space(res_dim,
2735 bmap->n_div, bmap->n_eq, bmap->n_ineq);
2736 if (isl_basic_map_is_rational(bmap))
2737 res = isl_basic_map_set_rational(res);
2738 if (isl_basic_map_plain_is_empty(bmap)) {
2739 isl_basic_map_free(bmap);
2740 return isl_basic_map_set_to_empty(res);
2742 res = isl_basic_map_add_constraints_dim_map(res, bmap, dim_map);
2743 return isl_basic_map_finalize(res);
2746 __isl_give isl_basic_map *isl_basic_map_add(__isl_take isl_basic_map *bmap,
2747 enum isl_dim_type type, unsigned n)
2751 return isl_basic_map_insert(bmap, type,
2752 isl_basic_map_dim(bmap, type), n);
2755 __isl_give isl_basic_set *isl_basic_set_add(__isl_take isl_basic_set *bset,
2756 enum isl_dim_type type, unsigned n)
2760 isl_assert(bset->ctx, type != isl_dim_in, goto error);
2761 return (isl_basic_set *)isl_basic_map_add((isl_basic_map *)bset, type, n);
2763 isl_basic_set_free(bset);
2767 static __isl_give isl_map *map_space_reset(__isl_take isl_map *map,
2768 enum isl_dim_type type)
2772 if (!map || !isl_space_is_named_or_nested(map->dim, type))
2775 space = isl_map_get_space(map);
2776 space = isl_space_reset(space, type);
2777 map = isl_map_reset_space(map, space);
2781 __isl_give isl_map *isl_map_insert_dims(__isl_take isl_map *map,
2782 enum isl_dim_type type, unsigned pos, unsigned n)
2787 return map_space_reset(map, type);
2789 map = isl_map_cow(map);
2793 map->dim = isl_space_insert_dims(map->dim, type, pos, n);
2797 for (i = 0; i < map->n; ++i) {
2798 map->p[i] = isl_basic_map_insert(map->p[i], type, pos, n);
2809 __isl_give isl_set *isl_set_insert_dims(__isl_take isl_set *set,
2810 enum isl_dim_type type, unsigned pos, unsigned n)
2812 return isl_map_insert_dims(set, type, pos, n);
2815 __isl_give isl_map *isl_map_add_dims(__isl_take isl_map *map,
2816 enum isl_dim_type type, unsigned n)
2820 return isl_map_insert_dims(map, type, isl_map_dim(map, type), n);
2823 __isl_give isl_set *isl_set_add_dims(__isl_take isl_set *set,
2824 enum isl_dim_type type, unsigned n)
2828 isl_assert(set->ctx, type != isl_dim_in, goto error);
2829 return (isl_set *)isl_map_add_dims((isl_map *)set, type, n);
2835 __isl_give isl_basic_map *isl_basic_map_move_dims(
2836 __isl_take isl_basic_map *bmap,
2837 enum isl_dim_type dst_type, unsigned dst_pos,
2838 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2840 struct isl_dim_map *dim_map;
2841 struct isl_basic_map *res;
2842 enum isl_dim_type t;
2843 unsigned total, off;
2850 isl_assert(bmap->ctx, src_pos + n <= isl_basic_map_dim(bmap, src_type),
2853 if (dst_type == src_type && dst_pos == src_pos)
2856 isl_assert(bmap->ctx, dst_type != src_type, goto error);
2858 if (pos(bmap->dim, dst_type) + dst_pos ==
2859 pos(bmap->dim, src_type) + src_pos +
2860 ((src_type < dst_type) ? n : 0)) {
2861 bmap = isl_basic_map_cow(bmap);
2865 bmap->dim = isl_space_move_dims(bmap->dim, dst_type, dst_pos,
2866 src_type, src_pos, n);
2870 bmap = isl_basic_map_finalize(bmap);
2875 total = isl_basic_map_total_dim(bmap);
2876 dim_map = isl_dim_map_alloc(bmap->ctx, total);
2879 for (t = isl_dim_param; t <= isl_dim_out; ++t) {
2880 unsigned size = isl_space_dim(bmap->dim, t);
2881 if (t == dst_type) {
2882 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2885 isl_dim_map_dim_range(dim_map, bmap->dim, src_type,
2888 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2889 dst_pos, size - dst_pos, off);
2890 off += size - dst_pos;
2891 } else if (t == src_type) {
2892 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2895 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2896 src_pos + n, size - src_pos - n, off);
2897 off += size - src_pos - n;
2899 isl_dim_map_dim(dim_map, bmap->dim, t, off);
2903 isl_dim_map_div(dim_map, bmap, off);
2905 res = isl_basic_map_alloc_space(isl_basic_map_get_space(bmap),
2906 bmap->n_div, bmap->n_eq, bmap->n_ineq);
2907 bmap = isl_basic_map_add_constraints_dim_map(res, bmap, dim_map);
2909 bmap->dim = isl_space_move_dims(bmap->dim, dst_type, dst_pos,
2910 src_type, src_pos, n);
2914 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
2915 bmap = isl_basic_map_gauss(bmap, NULL);
2916 bmap = isl_basic_map_finalize(bmap);
2920 isl_basic_map_free(bmap);
2924 __isl_give isl_basic_set *isl_basic_set_move_dims(__isl_take isl_basic_set *bset,
2925 enum isl_dim_type dst_type, unsigned dst_pos,
2926 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2928 return (isl_basic_set *)isl_basic_map_move_dims(
2929 (isl_basic_map *)bset, dst_type, dst_pos, src_type, src_pos, n);
2932 __isl_give isl_set *isl_set_move_dims(__isl_take isl_set *set,
2933 enum isl_dim_type dst_type, unsigned dst_pos,
2934 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2938 isl_assert(set->ctx, dst_type != isl_dim_in, goto error);
2939 return (isl_set *)isl_map_move_dims((isl_map *)set, dst_type, dst_pos,
2940 src_type, src_pos, n);
2946 __isl_give isl_map *isl_map_move_dims(__isl_take isl_map *map,
2947 enum isl_dim_type dst_type, unsigned dst_pos,
2948 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2957 isl_assert(map->ctx, src_pos + n <= isl_map_dim(map, src_type),
2960 if (dst_type == src_type && dst_pos == src_pos)
2963 isl_assert(map->ctx, dst_type != src_type, goto error);
2965 map = isl_map_cow(map);
2969 map->dim = isl_space_move_dims(map->dim, dst_type, dst_pos, src_type, src_pos, n);
2973 for (i = 0; i < map->n; ++i) {
2974 map->p[i] = isl_basic_map_move_dims(map->p[i],
2976 src_type, src_pos, n);
2987 /* Move the specified dimensions to the last columns right before
2988 * the divs. Don't change the dimension specification of bmap.
2989 * That's the responsibility of the caller.
2991 static __isl_give isl_basic_map *move_last(__isl_take isl_basic_map *bmap,
2992 enum isl_dim_type type, unsigned first, unsigned n)
2994 struct isl_dim_map *dim_map;
2995 struct isl_basic_map *res;
2996 enum isl_dim_type t;
2997 unsigned total, off;
3001 if (pos(bmap->dim, type) + first + n ==
3002 1 + isl_space_dim(bmap->dim, isl_dim_all))
3005 total = isl_basic_map_total_dim(bmap);
3006 dim_map = isl_dim_map_alloc(bmap->ctx, total);
3009 for (t = isl_dim_param; t <= isl_dim_out; ++t) {
3010 unsigned size = isl_space_dim(bmap->dim, t);
3012 isl_dim_map_dim_range(dim_map, bmap->dim, t,
3015 isl_dim_map_dim_range(dim_map, bmap->dim, t,
3016 first, n, total - bmap->n_div - n);
3017 isl_dim_map_dim_range(dim_map, bmap->dim, t,
3018 first + n, size - (first + n), off);
3019 off += size - (first + n);
3021 isl_dim_map_dim(dim_map, bmap->dim, t, off);
3025 isl_dim_map_div(dim_map, bmap, off + n);
3027 res = isl_basic_map_alloc_space(isl_basic_map_get_space(bmap),
3028 bmap->n_div, bmap->n_eq, bmap->n_ineq);
3029 res = isl_basic_map_add_constraints_dim_map(res, bmap, dim_map);
3033 /* Turn the n dimensions of type type, starting at first
3034 * into existentially quantified variables.
3036 __isl_give isl_basic_map *isl_basic_map_project_out(
3037 __isl_take isl_basic_map *bmap,
3038 enum isl_dim_type type, unsigned first, unsigned n)
3046 return basic_map_space_reset(bmap, type);
3051 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_RATIONAL))
3052 return isl_basic_map_remove_dims(bmap, type, first, n);
3054 isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
3057 bmap = move_last(bmap, type, first, n);
3058 bmap = isl_basic_map_cow(bmap);
3062 row_size = 1 + isl_space_dim(bmap->dim, isl_dim_all) + bmap->extra;
3063 old = bmap->block2.data;
3064 bmap->block2 = isl_blk_extend(bmap->ctx, bmap->block2,
3065 (bmap->extra + n) * (1 + row_size));
3066 if (!bmap->block2.data)
3068 new_div = isl_alloc_array(bmap->ctx, isl_int *, bmap->extra + n);
3071 for (i = 0; i < n; ++i) {
3072 new_div[i] = bmap->block2.data +
3073 (bmap->extra + i) * (1 + row_size);
3074 isl_seq_clr(new_div[i], 1 + row_size);
3076 for (i = 0; i < bmap->extra; ++i)
3077 new_div[n + i] = bmap->block2.data + (bmap->div[i] - old);
3079 bmap->div = new_div;
3083 bmap->dim = isl_space_drop_dims(bmap->dim, type, first, n);
3086 bmap = isl_basic_map_simplify(bmap);
3087 bmap = isl_basic_map_drop_redundant_divs(bmap);
3088 return isl_basic_map_finalize(bmap);
3090 isl_basic_map_free(bmap);
3094 /* Turn the n dimensions of type type, starting at first
3095 * into existentially quantified variables.
3097 struct isl_basic_set *isl_basic_set_project_out(struct isl_basic_set *bset,
3098 enum isl_dim_type type, unsigned first, unsigned n)
3100 return (isl_basic_set *)isl_basic_map_project_out(
3101 (isl_basic_map *)bset, type, first, n);
3104 /* Turn the n dimensions of type type, starting at first
3105 * into existentially quantified variables.
3107 __isl_give isl_map *isl_map_project_out(__isl_take isl_map *map,
3108 enum isl_dim_type type, unsigned first, unsigned n)
3116 return map_space_reset(map, type);
3118 isl_assert(map->ctx, first + n <= isl_map_dim(map, type), goto error);
3120 map = isl_map_cow(map);
3124 map->dim = isl_space_drop_dims(map->dim, type, first, n);
3128 for (i = 0; i < map->n; ++i) {
3129 map->p[i] = isl_basic_map_project_out(map->p[i], type, first, n);
3140 /* Turn the n dimensions of type type, starting at first
3141 * into existentially quantified variables.
3143 __isl_give isl_set *isl_set_project_out(__isl_take isl_set *set,
3144 enum isl_dim_type type, unsigned first, unsigned n)
3146 return (isl_set *)isl_map_project_out((isl_map *)set, type, first, n);
3149 static struct isl_basic_map *add_divs(struct isl_basic_map *bmap, unsigned n)
3153 for (i = 0; i < n; ++i) {
3154 j = isl_basic_map_alloc_div(bmap);
3157 isl_seq_clr(bmap->div[j], 1+1+isl_basic_map_total_dim(bmap));
3161 isl_basic_map_free(bmap);
3165 struct isl_basic_map *isl_basic_map_apply_range(
3166 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
3168 isl_space *dim_result = NULL;
3169 struct isl_basic_map *bmap;
3170 unsigned n_in, n_out, n, nparam, total, pos;
3171 struct isl_dim_map *dim_map1, *dim_map2;
3173 if (!bmap1 || !bmap2)
3176 dim_result = isl_space_join(isl_space_copy(bmap1->dim),
3177 isl_space_copy(bmap2->dim));
3179 n_in = isl_basic_map_n_in(bmap1);
3180 n_out = isl_basic_map_n_out(bmap2);
3181 n = isl_basic_map_n_out(bmap1);
3182 nparam = isl_basic_map_n_param(bmap1);
3184 total = nparam + n_in + n_out + bmap1->n_div + bmap2->n_div + n;
3185 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
3186 dim_map2 = isl_dim_map_alloc(bmap1->ctx, total);
3187 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
3188 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos = 0);
3189 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
3190 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos += n_in);
3191 isl_dim_map_div(dim_map1, bmap1, pos += n_out);
3192 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
3193 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += bmap2->n_div);
3194 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos);
3196 bmap = isl_basic_map_alloc_space(dim_result,
3197 bmap1->n_div + bmap2->n_div + n,
3198 bmap1->n_eq + bmap2->n_eq,
3199 bmap1->n_ineq + bmap2->n_ineq);
3200 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap1, dim_map1);
3201 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap2, dim_map2);
3202 bmap = add_divs(bmap, n);
3203 bmap = isl_basic_map_simplify(bmap);
3204 bmap = isl_basic_map_drop_redundant_divs(bmap);
3205 return isl_basic_map_finalize(bmap);
3207 isl_basic_map_free(bmap1);
3208 isl_basic_map_free(bmap2);
3212 struct isl_basic_set *isl_basic_set_apply(
3213 struct isl_basic_set *bset, struct isl_basic_map *bmap)
3218 isl_assert(bset->ctx, isl_basic_map_compatible_domain(bmap, bset),
3221 return (struct isl_basic_set *)
3222 isl_basic_map_apply_range((struct isl_basic_map *)bset, bmap);
3224 isl_basic_set_free(bset);
3225 isl_basic_map_free(bmap);
3229 struct isl_basic_map *isl_basic_map_apply_domain(
3230 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
3232 if (!bmap1 || !bmap2)
3235 isl_assert(bmap1->ctx,
3236 isl_basic_map_n_in(bmap1) == isl_basic_map_n_in(bmap2), goto error);
3237 isl_assert(bmap1->ctx,
3238 isl_basic_map_n_param(bmap1) == isl_basic_map_n_param(bmap2),
3241 bmap1 = isl_basic_map_reverse(bmap1);
3242 bmap1 = isl_basic_map_apply_range(bmap1, bmap2);
3243 return isl_basic_map_reverse(bmap1);
3245 isl_basic_map_free(bmap1);
3246 isl_basic_map_free(bmap2);
3250 /* Given two basic maps A -> f(A) and B -> g(B), construct a basic map
3251 * A \cap B -> f(A) + f(B)
3253 struct isl_basic_map *isl_basic_map_sum(
3254 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
3256 unsigned n_in, n_out, nparam, total, pos;
3257 struct isl_basic_map *bmap = NULL;
3258 struct isl_dim_map *dim_map1, *dim_map2;
3261 if (!bmap1 || !bmap2)
3264 isl_assert(bmap1->ctx, isl_space_is_equal(bmap1->dim, bmap2->dim),
3267 nparam = isl_basic_map_n_param(bmap1);
3268 n_in = isl_basic_map_n_in(bmap1);
3269 n_out = isl_basic_map_n_out(bmap1);
3271 total = nparam + n_in + n_out + bmap1->n_div + bmap2->n_div + 2 * n_out;
3272 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
3273 dim_map2 = isl_dim_map_alloc(bmap2->ctx, total);
3274 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
3275 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos);
3276 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
3277 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos);
3278 isl_dim_map_div(dim_map1, bmap1, pos += n_in + n_out);
3279 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
3280 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += bmap2->n_div);
3281 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos += n_out);
3283 bmap = isl_basic_map_alloc_space(isl_space_copy(bmap1->dim),
3284 bmap1->n_div + bmap2->n_div + 2 * n_out,
3285 bmap1->n_eq + bmap2->n_eq + n_out,
3286 bmap1->n_ineq + bmap2->n_ineq);
3287 for (i = 0; i < n_out; ++i) {
3288 int j = isl_basic_map_alloc_equality(bmap);
3291 isl_seq_clr(bmap->eq[j], 1+total);
3292 isl_int_set_si(bmap->eq[j][1+nparam+n_in+i], -1);
3293 isl_int_set_si(bmap->eq[j][1+pos+i], 1);
3294 isl_int_set_si(bmap->eq[j][1+pos-n_out+i], 1);
3296 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap1, dim_map1);
3297 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap2, dim_map2);
3298 bmap = add_divs(bmap, 2 * n_out);
3300 bmap = isl_basic_map_simplify(bmap);
3301 return isl_basic_map_finalize(bmap);
3303 isl_basic_map_free(bmap);
3304 isl_basic_map_free(bmap1);
3305 isl_basic_map_free(bmap2);
3309 /* Given two maps A -> f(A) and B -> g(B), construct a map
3310 * A \cap B -> f(A) + f(B)
3312 struct isl_map *isl_map_sum(struct isl_map *map1, struct isl_map *map2)
3314 struct isl_map *result;
3320 isl_assert(map1->ctx, isl_space_is_equal(map1->dim, map2->dim), goto error);
3322 result = isl_map_alloc_space(isl_space_copy(map1->dim),
3323 map1->n * map2->n, 0);
3326 for (i = 0; i < map1->n; ++i)
3327 for (j = 0; j < map2->n; ++j) {
3328 struct isl_basic_map *part;
3329 part = isl_basic_map_sum(
3330 isl_basic_map_copy(map1->p[i]),
3331 isl_basic_map_copy(map2->p[j]));
3332 if (isl_basic_map_is_empty(part))
3333 isl_basic_map_free(part);
3335 result = isl_map_add_basic_map(result, part);
3348 __isl_give isl_set *isl_set_sum(__isl_take isl_set *set1,
3349 __isl_take isl_set *set2)
3351 return (isl_set *)isl_map_sum((isl_map *)set1, (isl_map *)set2);
3354 /* Given a basic map A -> f(A), construct A -> -f(A).
3356 struct isl_basic_map *isl_basic_map_neg(struct isl_basic_map *bmap)
3361 bmap = isl_basic_map_cow(bmap);
3365 n = isl_basic_map_dim(bmap, isl_dim_out);
3366 off = isl_basic_map_offset(bmap, isl_dim_out);
3367 for (i = 0; i < bmap->n_eq; ++i)
3368 for (j = 0; j < n; ++j)
3369 isl_int_neg(bmap->eq[i][off+j], bmap->eq[i][off+j]);
3370 for (i = 0; i < bmap->n_ineq; ++i)
3371 for (j = 0; j < n; ++j)
3372 isl_int_neg(bmap->ineq[i][off+j], bmap->ineq[i][off+j]);
3373 for (i = 0; i < bmap->n_div; ++i)
3374 for (j = 0; j < n; ++j)
3375 isl_int_neg(bmap->div[i][1+off+j], bmap->div[i][1+off+j]);
3376 bmap = isl_basic_map_gauss(bmap, NULL);
3377 return isl_basic_map_finalize(bmap);
3380 __isl_give isl_basic_set *isl_basic_set_neg(__isl_take isl_basic_set *bset)
3382 return isl_basic_map_neg(bset);
3385 /* Given a map A -> f(A), construct A -> -f(A).
3387 struct isl_map *isl_map_neg(struct isl_map *map)
3391 map = isl_map_cow(map);
3395 for (i = 0; i < map->n; ++i) {
3396 map->p[i] = isl_basic_map_neg(map->p[i]);
3407 __isl_give isl_set *isl_set_neg(__isl_take isl_set *set)
3409 return (isl_set *)isl_map_neg((isl_map *)set);
3412 /* Given a basic map A -> f(A) and an integer d, construct a basic map
3413 * A -> floor(f(A)/d).
3415 struct isl_basic_map *isl_basic_map_floordiv(struct isl_basic_map *bmap,
3418 unsigned n_in, n_out, nparam, total, pos;
3419 struct isl_basic_map *result = NULL;
3420 struct isl_dim_map *dim_map;
3426 nparam = isl_basic_map_n_param(bmap);
3427 n_in = isl_basic_map_n_in(bmap);
3428 n_out = isl_basic_map_n_out(bmap);
3430 total = nparam + n_in + n_out + bmap->n_div + n_out;
3431 dim_map = isl_dim_map_alloc(bmap->ctx, total);
3432 isl_dim_map_dim(dim_map, bmap->dim, isl_dim_param, pos = 0);
3433 isl_dim_map_dim(dim_map, bmap->dim, isl_dim_in, pos += nparam);
3434 isl_dim_map_div(dim_map, bmap, pos += n_in + n_out);
3435 isl_dim_map_dim(dim_map, bmap->dim, isl_dim_out, pos += bmap->n_div);
3437 result = isl_basic_map_alloc_space(isl_space_copy(bmap->dim),
3438 bmap->n_div + n_out,
3439 bmap->n_eq, bmap->n_ineq + 2 * n_out);
3440 result = isl_basic_map_add_constraints_dim_map(result, bmap, dim_map);
3441 result = add_divs(result, n_out);
3442 for (i = 0; i < n_out; ++i) {
3444 j = isl_basic_map_alloc_inequality(result);
3447 isl_seq_clr(result->ineq[j], 1+total);
3448 isl_int_neg(result->ineq[j][1+nparam+n_in+i], d);
3449 isl_int_set_si(result->ineq[j][1+pos+i], 1);
3450 j = isl_basic_map_alloc_inequality(result);
3453 isl_seq_clr(result->ineq[j], 1+total);
3454 isl_int_set(result->ineq[j][1+nparam+n_in+i], d);
3455 isl_int_set_si(result->ineq[j][1+pos+i], -1);
3456 isl_int_sub_ui(result->ineq[j][0], d, 1);
3459 result = isl_basic_map_simplify(result);
3460 return isl_basic_map_finalize(result);
3462 isl_basic_map_free(result);
3466 /* Given a map A -> f(A) and an integer d, construct a map
3467 * A -> floor(f(A)/d).
3469 struct isl_map *isl_map_floordiv(struct isl_map *map, isl_int d)
3473 map = isl_map_cow(map);
3477 ISL_F_CLR(map, ISL_MAP_DISJOINT);
3478 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
3479 for (i = 0; i < map->n; ++i) {
3480 map->p[i] = isl_basic_map_floordiv(map->p[i], d);
3491 static struct isl_basic_map *var_equal(struct isl_basic_map *bmap, unsigned pos)
3497 i = isl_basic_map_alloc_equality(bmap);
3500 nparam = isl_basic_map_n_param(bmap);
3501 n_in = isl_basic_map_n_in(bmap);
3502 isl_seq_clr(bmap->eq[i], 1 + isl_basic_map_total_dim(bmap));
3503 isl_int_set_si(bmap->eq[i][1+nparam+pos], -1);
3504 isl_int_set_si(bmap->eq[i][1+nparam+n_in+pos], 1);
3505 return isl_basic_map_finalize(bmap);
3507 isl_basic_map_free(bmap);
3511 /* Add a constraints to "bmap" expressing i_pos < o_pos
3513 static struct isl_basic_map *var_less(struct isl_basic_map *bmap, unsigned pos)
3519 i = isl_basic_map_alloc_inequality(bmap);
3522 nparam = isl_basic_map_n_param(bmap);
3523 n_in = isl_basic_map_n_in(bmap);
3524 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
3525 isl_int_set_si(bmap->ineq[i][0], -1);
3526 isl_int_set_si(bmap->ineq[i][1+nparam+pos], -1);
3527 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], 1);
3528 return isl_basic_map_finalize(bmap);
3530 isl_basic_map_free(bmap);
3534 /* Add a constraint to "bmap" expressing i_pos <= o_pos
3536 static __isl_give isl_basic_map *var_less_or_equal(
3537 __isl_take isl_basic_map *bmap, unsigned pos)
3543 i = isl_basic_map_alloc_inequality(bmap);
3546 nparam = isl_basic_map_n_param(bmap);
3547 n_in = isl_basic_map_n_in(bmap);
3548 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
3549 isl_int_set_si(bmap->ineq[i][1+nparam+pos], -1);
3550 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], 1);
3551 return isl_basic_map_finalize(bmap);
3553 isl_basic_map_free(bmap);
3557 /* Add a constraints to "bmap" expressing i_pos > o_pos
3559 static struct isl_basic_map *var_more(struct isl_basic_map *bmap, unsigned pos)
3565 i = isl_basic_map_alloc_inequality(bmap);
3568 nparam = isl_basic_map_n_param(bmap);
3569 n_in = isl_basic_map_n_in(bmap);
3570 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
3571 isl_int_set_si(bmap->ineq[i][0], -1);
3572 isl_int_set_si(bmap->ineq[i][1+nparam+pos], 1);
3573 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], -1);
3574 return isl_basic_map_finalize(bmap);
3576 isl_basic_map_free(bmap);
3580 /* Add a constraint to "bmap" expressing i_pos >= o_pos
3582 static __isl_give isl_basic_map *var_more_or_equal(
3583 __isl_take isl_basic_map *bmap, unsigned pos)
3589 i = isl_basic_map_alloc_inequality(bmap);
3592 nparam = isl_basic_map_n_param(bmap);
3593 n_in = isl_basic_map_n_in(bmap);
3594 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
3595 isl_int_set_si(bmap->ineq[i][1+nparam+pos], 1);
3596 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], -1);
3597 return isl_basic_map_finalize(bmap);
3599 isl_basic_map_free(bmap);
3603 __isl_give isl_basic_map *isl_basic_map_equal(
3604 __isl_take isl_space *dim, unsigned n_equal)
3607 struct isl_basic_map *bmap;
3608 bmap = isl_basic_map_alloc_space(dim, 0, n_equal, 0);
3611 for (i = 0; i < n_equal && bmap; ++i)
3612 bmap = var_equal(bmap, i);
3613 return isl_basic_map_finalize(bmap);
3616 /* Return a relation on of dimension "dim" expressing i_[0..pos] << o_[0..pos]
3618 __isl_give isl_basic_map *isl_basic_map_less_at(__isl_take isl_space *dim,
3622 struct isl_basic_map *bmap;
3623 bmap = isl_basic_map_alloc_space(dim, 0, pos, 1);
3626 for (i = 0; i < pos && bmap; ++i)
3627 bmap = var_equal(bmap, i);
3629 bmap = var_less(bmap, pos);
3630 return isl_basic_map_finalize(bmap);
3633 /* Return a relation on of dimension "dim" expressing i_[0..pos] <<= o_[0..pos]
3635 __isl_give isl_basic_map *isl_basic_map_less_or_equal_at(
3636 __isl_take isl_space *dim, unsigned pos)
3639 isl_basic_map *bmap;
3641 bmap = isl_basic_map_alloc_space(dim, 0, pos, 1);
3642 for (i = 0; i < pos; ++i)
3643 bmap = var_equal(bmap, i);
3644 bmap = var_less_or_equal(bmap, pos);
3645 return isl_basic_map_finalize(bmap);
3648 /* Return a relation on pairs of sets of dimension "dim" expressing i_pos > o_pos
3650 __isl_give isl_basic_map *isl_basic_map_more_at(__isl_take isl_space *dim,
3654 struct isl_basic_map *bmap;
3655 bmap = isl_basic_map_alloc_space(dim, 0, pos, 1);
3658 for (i = 0; i < pos && bmap; ++i)
3659 bmap = var_equal(bmap, i);
3661 bmap = var_more(bmap, pos);
3662 return isl_basic_map_finalize(bmap);
3665 /* Return a relation on of dimension "dim" expressing i_[0..pos] >>= o_[0..pos]
3667 __isl_give isl_basic_map *isl_basic_map_more_or_equal_at(
3668 __isl_take isl_space *dim, unsigned pos)
3671 isl_basic_map *bmap;
3673 bmap = isl_basic_map_alloc_space(dim, 0, pos, 1);
3674 for (i = 0; i < pos; ++i)
3675 bmap = var_equal(bmap, i);
3676 bmap = var_more_or_equal(bmap, pos);
3677 return isl_basic_map_finalize(bmap);
3680 static __isl_give isl_map *map_lex_lte_first(__isl_take isl_space *dims,
3681 unsigned n, int equal)
3683 struct isl_map *map;
3686 if (n == 0 && equal)
3687 return isl_map_universe(dims);
3689 map = isl_map_alloc_space(isl_space_copy(dims), n, ISL_MAP_DISJOINT);
3691 for (i = 0; i + 1 < n; ++i)
3692 map = isl_map_add_basic_map(map,
3693 isl_basic_map_less_at(isl_space_copy(dims), i));
3696 map = isl_map_add_basic_map(map,
3697 isl_basic_map_less_or_equal_at(dims, n - 1));
3699 map = isl_map_add_basic_map(map,
3700 isl_basic_map_less_at(dims, n - 1));
3702 isl_space_free(dims);
3707 static __isl_give isl_map *map_lex_lte(__isl_take isl_space *dims, int equal)
3711 return map_lex_lte_first(dims, dims->n_out, equal);
3714 __isl_give isl_map *isl_map_lex_lt_first(__isl_take isl_space *dim, unsigned n)
3716 return map_lex_lte_first(dim, n, 0);
3719 __isl_give isl_map *isl_map_lex_le_first(__isl_take isl_space *dim, unsigned n)
3721 return map_lex_lte_first(dim, n, 1);
3724 __isl_give isl_map *isl_map_lex_lt(__isl_take isl_space *set_dim)
3726 return map_lex_lte(isl_space_map_from_set(set_dim), 0);
3729 __isl_give isl_map *isl_map_lex_le(__isl_take isl_space *set_dim)
3731 return map_lex_lte(isl_space_map_from_set(set_dim), 1);
3734 static __isl_give isl_map *map_lex_gte_first(__isl_take isl_space *dims,
3735 unsigned n, int equal)
3737 struct isl_map *map;
3740 if (n == 0 && equal)
3741 return isl_map_universe(dims);
3743 map = isl_map_alloc_space(isl_space_copy(dims), n, ISL_MAP_DISJOINT);
3745 for (i = 0; i + 1 < n; ++i)
3746 map = isl_map_add_basic_map(map,
3747 isl_basic_map_more_at(isl_space_copy(dims), i));
3750 map = isl_map_add_basic_map(map,
3751 isl_basic_map_more_or_equal_at(dims, n - 1));
3753 map = isl_map_add_basic_map(map,
3754 isl_basic_map_more_at(dims, n - 1));
3756 isl_space_free(dims);
3761 static __isl_give isl_map *map_lex_gte(__isl_take isl_space *dims, int equal)
3765 return map_lex_gte_first(dims, dims->n_out, equal);
3768 __isl_give isl_map *isl_map_lex_gt_first(__isl_take isl_space *dim, unsigned n)
3770 return map_lex_gte_first(dim, n, 0);
3773 __isl_give isl_map *isl_map_lex_ge_first(__isl_take isl_space *dim, unsigned n)
3775 return map_lex_gte_first(dim, n, 1);
3778 __isl_give isl_map *isl_map_lex_gt(__isl_take isl_space *set_dim)
3780 return map_lex_gte(isl_space_map_from_set(set_dim), 0);
3783 __isl_give isl_map *isl_map_lex_ge(__isl_take isl_space *set_dim)
3785 return map_lex_gte(isl_space_map_from_set(set_dim), 1);
3788 __isl_give isl_map *isl_set_lex_le_set(__isl_take isl_set *set1,
3789 __isl_take isl_set *set2)
3792 map = isl_map_lex_le(isl_set_get_space(set1));
3793 map = isl_map_intersect_domain(map, set1);
3794 map = isl_map_intersect_range(map, set2);
3798 __isl_give isl_map *isl_set_lex_lt_set(__isl_take isl_set *set1,
3799 __isl_take isl_set *set2)
3802 map = isl_map_lex_lt(isl_set_get_space(set1));
3803 map = isl_map_intersect_domain(map, set1);
3804 map = isl_map_intersect_range(map, set2);
3808 __isl_give isl_map *isl_set_lex_ge_set(__isl_take isl_set *set1,
3809 __isl_take isl_set *set2)
3812 map = isl_map_lex_ge(isl_set_get_space(set1));
3813 map = isl_map_intersect_domain(map, set1);
3814 map = isl_map_intersect_range(map, set2);
3818 __isl_give isl_map *isl_set_lex_gt_set(__isl_take isl_set *set1,
3819 __isl_take isl_set *set2)
3822 map = isl_map_lex_gt(isl_set_get_space(set1));
3823 map = isl_map_intersect_domain(map, set1);
3824 map = isl_map_intersect_range(map, set2);
3828 __isl_give isl_map *isl_map_lex_le_map(__isl_take isl_map *map1,
3829 __isl_take isl_map *map2)
3832 map = isl_map_lex_le(isl_space_range(isl_map_get_space(map1)));
3833 map = isl_map_apply_domain(map, isl_map_reverse(map1));
3834 map = isl_map_apply_range(map, isl_map_reverse(map2));
3838 __isl_give isl_map *isl_map_lex_lt_map(__isl_take isl_map *map1,
3839 __isl_take isl_map *map2)
3842 map = isl_map_lex_lt(isl_space_range(isl_map_get_space(map1)));
3843 map = isl_map_apply_domain(map, isl_map_reverse(map1));
3844 map = isl_map_apply_range(map, isl_map_reverse(map2));
3848 __isl_give isl_map *isl_map_lex_ge_map(__isl_take isl_map *map1,
3849 __isl_take isl_map *map2)
3852 map = isl_map_lex_ge(isl_space_range(isl_map_get_space(map1)));
3853 map = isl_map_apply_domain(map, isl_map_reverse(map1));
3854 map = isl_map_apply_range(map, isl_map_reverse(map2));
3858 __isl_give isl_map *isl_map_lex_gt_map(__isl_take isl_map *map1,
3859 __isl_take isl_map *map2)
3862 map = isl_map_lex_gt(isl_space_range(isl_map_get_space(map1)));
3863 map = isl_map_apply_domain(map, isl_map_reverse(map1));
3864 map = isl_map_apply_range(map, isl_map_reverse(map2));
3868 __isl_give isl_basic_map *isl_basic_map_from_basic_set(
3869 __isl_take isl_basic_set *bset, __isl_take isl_space *dim)
3871 struct isl_basic_map *bmap;
3873 bset = isl_basic_set_cow(bset);
3877 isl_assert(bset->ctx, isl_space_compatible(bset->dim, dim), goto error);
3878 isl_space_free(bset->dim);
3879 bmap = (struct isl_basic_map *) bset;
3881 return isl_basic_map_finalize(bmap);
3883 isl_basic_set_free(bset);
3884 isl_space_free(dim);
3888 struct isl_basic_set *isl_basic_set_from_basic_map(struct isl_basic_map *bmap)
3892 if (bmap->dim->n_in == 0)
3893 return (struct isl_basic_set *)bmap;
3894 bmap = isl_basic_map_cow(bmap);
3897 bmap->dim = isl_space_as_set_space(bmap->dim);
3900 bmap = isl_basic_map_finalize(bmap);
3901 return (struct isl_basic_set *)bmap;
3903 isl_basic_map_free(bmap);
3907 /* For a div d = floor(f/m), add the constraints
3910 * -(f-(n-1)) + m d >= 0
3912 * Note that the second constraint is the negation of
3916 int isl_basic_map_add_div_constraints_var(__isl_keep isl_basic_map *bmap,
3917 unsigned pos, isl_int *div)
3920 unsigned total = isl_basic_map_total_dim(bmap);
3922 i = isl_basic_map_alloc_inequality(bmap);
3925 isl_seq_cpy(bmap->ineq[i], div + 1, 1 + total);
3926 isl_int_neg(bmap->ineq[i][1 + pos], div[0]);
3928 j = isl_basic_map_alloc_inequality(bmap);
3931 isl_seq_neg(bmap->ineq[j], bmap->ineq[i], 1 + total);
3932 isl_int_add(bmap->ineq[j][0], bmap->ineq[j][0], bmap->ineq[j][1 + pos]);
3933 isl_int_sub_ui(bmap->ineq[j][0], bmap->ineq[j][0], 1);
3937 int isl_basic_set_add_div_constraints_var(__isl_keep isl_basic_set *bset,
3938 unsigned pos, isl_int *div)
3940 return isl_basic_map_add_div_constraints_var((isl_basic_map *)bset,
3944 int isl_basic_map_add_div_constraints(struct isl_basic_map *bmap, unsigned div)
3946 unsigned total = isl_basic_map_total_dim(bmap);
3947 unsigned div_pos = total - bmap->n_div + div;
3949 return isl_basic_map_add_div_constraints_var(bmap, div_pos,
3953 struct isl_basic_set *isl_basic_map_underlying_set(
3954 struct isl_basic_map *bmap)
3958 if (bmap->dim->nparam == 0 && bmap->dim->n_in == 0 &&
3960 !isl_space_is_named_or_nested(bmap->dim, isl_dim_in) &&
3961 !isl_space_is_named_or_nested(bmap->dim, isl_dim_out))
3962 return (struct isl_basic_set *)bmap;
3963 bmap = isl_basic_map_cow(bmap);
3966 bmap->dim = isl_space_underlying(bmap->dim, bmap->n_div);
3969 bmap->extra -= bmap->n_div;
3971 bmap = isl_basic_map_finalize(bmap);
3972 return (struct isl_basic_set *)bmap;
3977 __isl_give isl_basic_set *isl_basic_set_underlying_set(
3978 __isl_take isl_basic_set *bset)
3980 return isl_basic_map_underlying_set((isl_basic_map *)bset);
3983 struct isl_basic_map *isl_basic_map_overlying_set(
3984 struct isl_basic_set *bset, struct isl_basic_map *like)
3986 struct isl_basic_map *bmap;
3987 struct isl_ctx *ctx;
3994 isl_assert(ctx, bset->n_div == 0, goto error);
3995 isl_assert(ctx, isl_basic_set_n_param(bset) == 0, goto error);
3996 isl_assert(ctx, bset->dim->n_out == isl_basic_map_total_dim(like),
3998 if (isl_space_is_equal(bset->dim, like->dim) && like->n_div == 0) {
3999 isl_basic_map_free(like);
4000 return (struct isl_basic_map *)bset;
4002 bset = isl_basic_set_cow(bset);
4005 total = bset->dim->n_out + bset->extra;
4006 bmap = (struct isl_basic_map *)bset;
4007 isl_space_free(bmap->dim);
4008 bmap->dim = isl_space_copy(like->dim);
4011 bmap->n_div = like->n_div;
4012 bmap->extra += like->n_div;
4016 ltotal = total - bmap->extra + like->extra;
4019 bmap->block2 = isl_blk_extend(ctx, bmap->block2,
4020 bmap->extra * (1 + 1 + total));
4021 if (isl_blk_is_error(bmap->block2))
4023 div = isl_realloc_array(ctx, bmap->div, isl_int *, bmap->extra);
4027 for (i = 0; i < bmap->extra; ++i)
4028 bmap->div[i] = bmap->block2.data + i * (1 + 1 + total);
4029 for (i = 0; i < like->n_div; ++i) {
4030 isl_seq_cpy(bmap->div[i], like->div[i], 1 + 1 + ltotal);
4031 isl_seq_clr(bmap->div[i]+1+1+ltotal, total - ltotal);
4033 bmap = isl_basic_map_extend_constraints(bmap,
4034 0, 2 * like->n_div);
4035 for (i = 0; i < like->n_div; ++i) {
4036 if (isl_int_is_zero(bmap->div[i][0]))
4038 if (isl_basic_map_add_div_constraints(bmap, i) < 0)
4042 isl_basic_map_free(like);
4043 bmap = isl_basic_map_simplify(bmap);
4044 bmap = isl_basic_map_finalize(bmap);
4047 isl_basic_map_free(like);
4048 isl_basic_set_free(bset);
4052 struct isl_basic_set *isl_basic_set_from_underlying_set(
4053 struct isl_basic_set *bset, struct isl_basic_set *like)
4055 return (struct isl_basic_set *)
4056 isl_basic_map_overlying_set(bset, (struct isl_basic_map *)like);
4059 struct isl_set *isl_set_from_underlying_set(
4060 struct isl_set *set, struct isl_basic_set *like)
4066 isl_assert(set->ctx, set->dim->n_out == isl_basic_set_total_dim(like),
4068 if (isl_space_is_equal(set->dim, like->dim) && like->n_div == 0) {
4069 isl_basic_set_free(like);
4072 set = isl_set_cow(set);
4075 for (i = 0; i < set->n; ++i) {
4076 set->p[i] = isl_basic_set_from_underlying_set(set->p[i],
4077 isl_basic_set_copy(like));
4081 isl_space_free(set->dim);
4082 set->dim = isl_space_copy(like->dim);
4085 isl_basic_set_free(like);
4088 isl_basic_set_free(like);
4093 struct isl_set *isl_map_underlying_set(struct isl_map *map)
4097 map = isl_map_cow(map);
4100 map->dim = isl_space_cow(map->dim);
4104 for (i = 1; i < map->n; ++i)
4105 isl_assert(map->ctx, map->p[0]->n_div == map->p[i]->n_div,
4107 for (i = 0; i < map->n; ++i) {
4108 map->p[i] = (struct isl_basic_map *)
4109 isl_basic_map_underlying_set(map->p[i]);
4114 map->dim = isl_space_underlying(map->dim, 0);
4116 isl_space_free(map->dim);
4117 map->dim = isl_space_copy(map->p[0]->dim);
4121 return (struct isl_set *)map;
4127 struct isl_set *isl_set_to_underlying_set(struct isl_set *set)
4129 return (struct isl_set *)isl_map_underlying_set((struct isl_map *)set);
4132 __isl_give isl_basic_map *isl_basic_map_reset_space(
4133 __isl_take isl_basic_map *bmap, __isl_take isl_space *dim)
4135 bmap = isl_basic_map_cow(bmap);
4139 isl_space_free(bmap->dim);
4142 bmap = isl_basic_map_finalize(bmap);
4146 isl_basic_map_free(bmap);
4147 isl_space_free(dim);
4151 __isl_give isl_basic_set *isl_basic_set_reset_space(
4152 __isl_take isl_basic_set *bset, __isl_take isl_space *dim)
4154 return (isl_basic_set *)isl_basic_map_reset_space((isl_basic_map *)bset,
4158 __isl_give isl_map *isl_map_reset_space(__isl_take isl_map *map,
4159 __isl_take isl_space *dim)
4163 map = isl_map_cow(map);
4167 for (i = 0; i < map->n; ++i) {
4168 map->p[i] = isl_basic_map_reset_space(map->p[i],
4169 isl_space_copy(dim));
4173 isl_space_free(map->dim);
4179 isl_space_free(dim);
4183 __isl_give isl_set *isl_set_reset_space(__isl_take isl_set *set,
4184 __isl_take isl_space *dim)
4186 return (struct isl_set *) isl_map_reset_space((struct isl_map *)set, dim);
4189 /* Compute the parameter domain of the given basic set.
4191 __isl_give isl_basic_set *isl_basic_set_params(__isl_take isl_basic_set *bset)
4196 if (isl_basic_set_is_params(bset))
4199 n = isl_basic_set_dim(bset, isl_dim_set);
4200 bset = isl_basic_set_project_out(bset, isl_dim_set, 0, n);
4201 space = isl_basic_set_get_space(bset);
4202 space = isl_space_params(space);
4203 bset = isl_basic_set_reset_space(bset, space);
4207 /* Compute the parameter domain of the given set.
4209 __isl_give isl_set *isl_set_params(__isl_take isl_set *set)
4214 if (isl_set_is_params(set))
4217 n = isl_set_dim(set, isl_dim_set);
4218 set = isl_set_project_out(set, isl_dim_set, 0, n);
4219 space = isl_set_get_space(set);
4220 space = isl_space_params(space);
4221 set = isl_set_reset_space(set, space);
4225 /* Construct a zero-dimensional set with the given parameter domain.
4227 __isl_give isl_set *isl_set_from_params(__isl_take isl_set *set)
4230 space = isl_set_get_space(set);
4231 space = isl_space_set_from_params(space);
4232 set = isl_set_reset_space(set, space);
4236 /* Compute the parameter domain of the given map.
4238 __isl_give isl_set *isl_map_params(__isl_take isl_map *map)
4243 n = isl_map_dim(map, isl_dim_in);
4244 map = isl_map_project_out(map, isl_dim_in, 0, n);
4245 n = isl_map_dim(map, isl_dim_out);
4246 map = isl_map_project_out(map, isl_dim_out, 0, n);
4247 space = isl_map_get_space(map);
4248 space = isl_space_params(space);
4249 map = isl_map_reset_space(map, space);
4253 struct isl_basic_set *isl_basic_map_domain(struct isl_basic_map *bmap)
4256 struct isl_basic_set *domain;
4262 dim = isl_space_domain(isl_basic_map_get_space(bmap));
4264 n_in = isl_basic_map_n_in(bmap);
4265 n_out = isl_basic_map_n_out(bmap);
4266 domain = isl_basic_set_from_basic_map(bmap);
4267 domain = isl_basic_set_project_out(domain, isl_dim_set, n_in, n_out);
4269 domain = isl_basic_set_reset_space(domain, dim);
4274 int isl_basic_map_may_be_set(__isl_keep isl_basic_map *bmap)
4278 return isl_space_may_be_set(bmap->dim);
4281 /* Is this basic map actually a set?
4282 * Users should never call this function. Outside of isl,
4283 * the type should indicate whether something is a set or a map.
4285 int isl_basic_map_is_set(__isl_keep isl_basic_map *bmap)
4289 return isl_space_is_set(bmap->dim);
4292 struct isl_basic_set *isl_basic_map_range(struct isl_basic_map *bmap)
4296 if (isl_basic_map_is_set(bmap))
4298 return isl_basic_map_domain(isl_basic_map_reverse(bmap));
4301 __isl_give isl_basic_map *isl_basic_map_domain_map(
4302 __isl_take isl_basic_map *bmap)
4306 isl_basic_map *domain;
4307 int nparam, n_in, n_out;
4310 nparam = isl_basic_map_dim(bmap, isl_dim_param);
4311 n_in = isl_basic_map_dim(bmap, isl_dim_in);
4312 n_out = isl_basic_map_dim(bmap, isl_dim_out);
4314 dim = isl_space_from_range(isl_space_domain(isl_basic_map_get_space(bmap)));
4315 domain = isl_basic_map_universe(dim);
4317 bmap = isl_basic_map_from_domain(isl_basic_map_wrap(bmap));
4318 bmap = isl_basic_map_apply_range(bmap, domain);
4319 bmap = isl_basic_map_extend_constraints(bmap, n_in, 0);
4321 total = isl_basic_map_total_dim(bmap);
4323 for (i = 0; i < n_in; ++i) {
4324 k = isl_basic_map_alloc_equality(bmap);
4327 isl_seq_clr(bmap->eq[k], 1 + total);
4328 isl_int_set_si(bmap->eq[k][1 + nparam + i], -1);
4329 isl_int_set_si(bmap->eq[k][1 + nparam + n_in + n_out + i], 1);
4332 bmap = isl_basic_map_gauss(bmap, NULL);
4333 return isl_basic_map_finalize(bmap);
4335 isl_basic_map_free(bmap);
4339 __isl_give isl_basic_map *isl_basic_map_range_map(
4340 __isl_take isl_basic_map *bmap)
4344 isl_basic_map *range;
4345 int nparam, n_in, n_out;
4348 nparam = isl_basic_map_dim(bmap, isl_dim_param);
4349 n_in = isl_basic_map_dim(bmap, isl_dim_in);
4350 n_out = isl_basic_map_dim(bmap, isl_dim_out);
4352 dim = isl_space_from_range(isl_space_range(isl_basic_map_get_space(bmap)));
4353 range = isl_basic_map_universe(dim);
4355 bmap = isl_basic_map_from_domain(isl_basic_map_wrap(bmap));
4356 bmap = isl_basic_map_apply_range(bmap, range);
4357 bmap = isl_basic_map_extend_constraints(bmap, n_out, 0);
4359 total = isl_basic_map_total_dim(bmap);
4361 for (i = 0; i < n_out; ++i) {
4362 k = isl_basic_map_alloc_equality(bmap);
4365 isl_seq_clr(bmap->eq[k], 1 + total);
4366 isl_int_set_si(bmap->eq[k][1 + nparam + n_in + i], -1);
4367 isl_int_set_si(bmap->eq[k][1 + nparam + n_in + n_out + i], 1);
4370 bmap = isl_basic_map_gauss(bmap, NULL);
4371 return isl_basic_map_finalize(bmap);
4373 isl_basic_map_free(bmap);
4377 int isl_map_may_be_set(__isl_keep isl_map *map)
4381 return isl_space_may_be_set(map->dim);
4384 /* Is this map actually a set?
4385 * Users should never call this function. Outside of isl,
4386 * the type should indicate whether something is a set or a map.
4388 int isl_map_is_set(__isl_keep isl_map *map)
4392 return isl_space_is_set(map->dim);
4395 struct isl_set *isl_map_range(struct isl_map *map)
4398 struct isl_set *set;
4402 if (isl_map_is_set(map))
4403 return (isl_set *)map;
4405 map = isl_map_cow(map);
4409 set = (struct isl_set *) map;
4410 set->dim = isl_space_range(set->dim);
4413 for (i = 0; i < map->n; ++i) {
4414 set->p[i] = isl_basic_map_range(map->p[i]);
4418 ISL_F_CLR(set, ISL_MAP_DISJOINT);
4419 ISL_F_CLR(set, ISL_SET_NORMALIZED);
4426 __isl_give isl_map *isl_map_domain_map(__isl_take isl_map *map)
4429 isl_space *domain_dim;
4431 map = isl_map_cow(map);
4435 domain_dim = isl_space_from_range(isl_space_domain(isl_map_get_space(map)));
4436 map->dim = isl_space_from_domain(isl_space_wrap(map->dim));
4437 map->dim = isl_space_join(map->dim, domain_dim);
4440 for (i = 0; i < map->n; ++i) {
4441 map->p[i] = isl_basic_map_domain_map(map->p[i]);
4445 ISL_F_CLR(map, ISL_MAP_DISJOINT);
4446 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
4453 __isl_give isl_map *isl_map_range_map(__isl_take isl_map *map)
4456 isl_space *range_dim;
4458 map = isl_map_cow(map);
4462 range_dim = isl_space_range(isl_map_get_space(map));
4463 range_dim = isl_space_from_range(range_dim);
4464 map->dim = isl_space_from_domain(isl_space_wrap(map->dim));
4465 map->dim = isl_space_join(map->dim, range_dim);
4468 for (i = 0; i < map->n; ++i) {
4469 map->p[i] = isl_basic_map_range_map(map->p[i]);
4473 ISL_F_CLR(map, ISL_MAP_DISJOINT);
4474 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
4481 __isl_give isl_map *isl_map_from_set(__isl_take isl_set *set,
4482 __isl_take isl_space *dim)
4485 struct isl_map *map = NULL;
4487 set = isl_set_cow(set);
4490 isl_assert(set->ctx, isl_space_compatible(set->dim, dim), goto error);
4491 map = (struct isl_map *)set;
4492 for (i = 0; i < set->n; ++i) {
4493 map->p[i] = isl_basic_map_from_basic_set(
4494 set->p[i], isl_space_copy(dim));
4498 isl_space_free(map->dim);
4502 isl_space_free(dim);
4507 __isl_give isl_basic_map *isl_basic_map_from_domain(
4508 __isl_take isl_basic_set *bset)
4510 return isl_basic_map_reverse(isl_basic_map_from_range(bset));
4513 __isl_give isl_basic_map *isl_basic_map_from_range(
4514 __isl_take isl_basic_set *bset)
4517 space = isl_basic_set_get_space(bset);
4518 space = isl_space_from_range(space);
4519 bset = isl_basic_set_reset_space(bset, space);
4520 return (isl_basic_map *)bset;
4523 struct isl_map *isl_map_from_range(struct isl_set *set)
4526 space = isl_set_get_space(set);
4527 space = isl_space_from_range(space);
4528 set = isl_set_reset_space(set, space);
4529 return (struct isl_map *)set;
4532 __isl_give isl_map *isl_map_from_domain(__isl_take isl_set *set)
4534 return isl_map_reverse(isl_map_from_range(set));
4537 __isl_give isl_basic_map *isl_basic_map_from_domain_and_range(
4538 __isl_take isl_basic_set *domain, __isl_take isl_basic_set *range)
4540 return isl_basic_map_apply_range(isl_basic_map_reverse(domain), range);
4543 __isl_give isl_map *isl_map_from_domain_and_range(__isl_take isl_set *domain,
4544 __isl_take isl_set *range)
4546 return isl_map_apply_range(isl_map_reverse(domain), range);
4549 struct isl_set *isl_set_from_map(struct isl_map *map)
4552 struct isl_set *set = NULL;
4556 map = isl_map_cow(map);
4559 map->dim = isl_space_as_set_space(map->dim);
4562 set = (struct isl_set *)map;
4563 for (i = 0; i < map->n; ++i) {
4564 set->p[i] = isl_basic_set_from_basic_map(map->p[i]);
4574 __isl_give isl_map *isl_map_alloc_space(__isl_take isl_space *dim, int n,
4577 struct isl_map *map;
4582 isl_die(dim->ctx, isl_error_internal,
4583 "negative number of basic maps", goto error);
4584 map = isl_alloc(dim->ctx, struct isl_map,
4585 sizeof(struct isl_map) +
4586 (n - 1) * sizeof(struct isl_basic_map *));
4590 map->ctx = dim->ctx;
4591 isl_ctx_ref(map->ctx);
4599 isl_space_free(dim);
4603 struct isl_map *isl_map_alloc(struct isl_ctx *ctx,
4604 unsigned nparam, unsigned in, unsigned out, int n,
4607 struct isl_map *map;
4610 dims = isl_space_alloc(ctx, nparam, in, out);
4614 map = isl_map_alloc_space(dims, n, flags);
4618 __isl_give isl_basic_map *isl_basic_map_empty(__isl_take isl_space *dim)
4620 struct isl_basic_map *bmap;
4621 bmap = isl_basic_map_alloc_space(dim, 0, 1, 0);
4622 bmap = isl_basic_map_set_to_empty(bmap);
4626 __isl_give isl_basic_set *isl_basic_set_empty(__isl_take isl_space *dim)
4628 struct isl_basic_set *bset;
4629 bset = isl_basic_set_alloc_space(dim, 0, 1, 0);
4630 bset = isl_basic_set_set_to_empty(bset);
4634 struct isl_basic_map *isl_basic_map_empty_like(struct isl_basic_map *model)
4636 struct isl_basic_map *bmap;
4639 bmap = isl_basic_map_alloc_space(isl_space_copy(model->dim), 0, 1, 0);
4640 bmap = isl_basic_map_set_to_empty(bmap);
4644 struct isl_basic_map *isl_basic_map_empty_like_map(struct isl_map *model)
4646 struct isl_basic_map *bmap;
4649 bmap = isl_basic_map_alloc_space(isl_space_copy(model->dim), 0, 1, 0);
4650 bmap = isl_basic_map_set_to_empty(bmap);
4654 struct isl_basic_set *isl_basic_set_empty_like(struct isl_basic_set *model)
4656 struct isl_basic_set *bset;
4659 bset = isl_basic_set_alloc_space(isl_space_copy(model->dim), 0, 1, 0);
4660 bset = isl_basic_set_set_to_empty(bset);
4664 __isl_give isl_basic_map *isl_basic_map_universe(__isl_take isl_space *dim)
4666 struct isl_basic_map *bmap;
4667 bmap = isl_basic_map_alloc_space(dim, 0, 0, 0);
4668 bmap = isl_basic_map_finalize(bmap);
4672 __isl_give isl_basic_set *isl_basic_set_universe(__isl_take isl_space *dim)
4674 struct isl_basic_set *bset;
4675 bset = isl_basic_set_alloc_space(dim, 0, 0, 0);
4676 bset = isl_basic_set_finalize(bset);
4680 __isl_give isl_basic_map *isl_basic_map_nat_universe(__isl_take isl_space *dim)
4683 unsigned total = isl_space_dim(dim, isl_dim_all);
4684 isl_basic_map *bmap;
4686 bmap= isl_basic_map_alloc_space(dim, 0, 0, total);
4687 for (i = 0; i < total; ++i) {
4688 int k = isl_basic_map_alloc_inequality(bmap);
4691 isl_seq_clr(bmap->ineq[k], 1 + total);
4692 isl_int_set_si(bmap->ineq[k][1 + i], 1);
4696 isl_basic_map_free(bmap);
4700 __isl_give isl_basic_set *isl_basic_set_nat_universe(__isl_take isl_space *dim)
4702 return isl_basic_map_nat_universe(dim);
4705 __isl_give isl_map *isl_map_nat_universe(__isl_take isl_space *dim)
4707 return isl_map_from_basic_map(isl_basic_map_nat_universe(dim));
4710 __isl_give isl_set *isl_set_nat_universe(__isl_take isl_space *dim)
4712 return isl_map_nat_universe(dim);
4715 __isl_give isl_basic_map *isl_basic_map_universe_like(
4716 __isl_keep isl_basic_map *model)
4720 return isl_basic_map_alloc_space(isl_space_copy(model->dim), 0, 0, 0);
4723 struct isl_basic_set *isl_basic_set_universe_like(struct isl_basic_set *model)
4727 return isl_basic_set_alloc_space(isl_space_copy(model->dim), 0, 0, 0);
4730 __isl_give isl_basic_set *isl_basic_set_universe_like_set(
4731 __isl_keep isl_set *model)
4735 return isl_basic_set_alloc_space(isl_space_copy(model->dim), 0, 0, 0);
4738 __isl_give isl_map *isl_map_empty(__isl_take isl_space *dim)
4740 return isl_map_alloc_space(dim, 0, ISL_MAP_DISJOINT);
4743 struct isl_map *isl_map_empty_like(struct isl_map *model)
4747 return isl_map_alloc_space(isl_space_copy(model->dim), 0, ISL_MAP_DISJOINT);
4750 struct isl_map *isl_map_empty_like_basic_map(struct isl_basic_map *model)
4754 return isl_map_alloc_space(isl_space_copy(model->dim), 0, ISL_MAP_DISJOINT);
4757 __isl_give isl_set *isl_set_empty(__isl_take isl_space *dim)
4759 return isl_set_alloc_space(dim, 0, ISL_MAP_DISJOINT);
4762 struct isl_set *isl_set_empty_like(struct isl_set *model)
4766 return isl_set_empty(isl_space_copy(model->dim));
4769 __isl_give isl_map *isl_map_universe(__isl_take isl_space *dim)
4771 struct isl_map *map;
4774 map = isl_map_alloc_space(isl_space_copy(dim), 1, ISL_MAP_DISJOINT);
4775 map = isl_map_add_basic_map(map, isl_basic_map_universe(dim));
4779 __isl_give isl_set *isl_set_universe(__isl_take isl_space *dim)
4781 struct isl_set *set;
4784 set = isl_set_alloc_space(isl_space_copy(dim), 1, ISL_MAP_DISJOINT);
4785 set = isl_set_add_basic_set(set, isl_basic_set_universe(dim));
4789 __isl_give isl_set *isl_set_universe_like(__isl_keep isl_set *model)
4793 return isl_set_universe(isl_space_copy(model->dim));
4796 struct isl_map *isl_map_dup(struct isl_map *map)
4799 struct isl_map *dup;
4803 dup = isl_map_alloc_space(isl_space_copy(map->dim), map->n, map->flags);
4804 for (i = 0; i < map->n; ++i)
4805 dup = isl_map_add_basic_map(dup, isl_basic_map_copy(map->p[i]));
4809 __isl_give isl_map *isl_map_add_basic_map(__isl_take isl_map *map,
4810 __isl_take isl_basic_map *bmap)
4814 if (isl_basic_map_plain_is_empty(bmap)) {
4815 isl_basic_map_free(bmap);
4818 isl_assert(map->ctx, isl_space_is_equal(map->dim, bmap->dim), goto error);
4819 isl_assert(map->ctx, map->n < map->size, goto error);
4820 map->p[map->n] = bmap;
4822 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
4828 isl_basic_map_free(bmap);
4832 void isl_map_free(struct isl_map *map)
4842 isl_ctx_deref(map->ctx);
4843 for (i = 0; i < map->n; ++i)
4844 isl_basic_map_free(map->p[i]);
4845 isl_space_free(map->dim);
4849 struct isl_map *isl_map_extend(struct isl_map *base,
4850 unsigned nparam, unsigned n_in, unsigned n_out)
4854 base = isl_map_cow(base);
4858 base->dim = isl_space_extend(base->dim, nparam, n_in, n_out);
4861 for (i = 0; i < base->n; ++i) {
4862 base->p[i] = isl_basic_map_extend_space(base->p[i],
4863 isl_space_copy(base->dim), 0, 0, 0);
4873 struct isl_set *isl_set_extend(struct isl_set *base,
4874 unsigned nparam, unsigned dim)
4876 return (struct isl_set *)isl_map_extend((struct isl_map *)base,
4880 static struct isl_basic_map *isl_basic_map_fix_pos_si(
4881 struct isl_basic_map *bmap, unsigned pos, int value)
4885 bmap = isl_basic_map_cow(bmap);
4886 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
4887 j = isl_basic_map_alloc_equality(bmap);
4890 isl_seq_clr(bmap->eq[j] + 1, isl_basic_map_total_dim(bmap));
4891 isl_int_set_si(bmap->eq[j][pos], -1);
4892 isl_int_set_si(bmap->eq[j][0], value);
4893 bmap = isl_basic_map_simplify(bmap);
4894 return isl_basic_map_finalize(bmap);
4896 isl_basic_map_free(bmap);
4900 static __isl_give isl_basic_map *isl_basic_map_fix_pos(
4901 __isl_take isl_basic_map *bmap, unsigned pos, isl_int value)
4905 bmap = isl_basic_map_cow(bmap);
4906 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
4907 j = isl_basic_map_alloc_equality(bmap);
4910 isl_seq_clr(bmap->eq[j] + 1, isl_basic_map_total_dim(bmap));
4911 isl_int_set_si(bmap->eq[j][pos], -1);
4912 isl_int_set(bmap->eq[j][0], value);
4913 bmap = isl_basic_map_simplify(bmap);
4914 return isl_basic_map_finalize(bmap);
4916 isl_basic_map_free(bmap);
4920 struct isl_basic_map *isl_basic_map_fix_si(struct isl_basic_map *bmap,
4921 enum isl_dim_type type, unsigned pos, int value)
4925 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
4926 return isl_basic_map_fix_pos_si(bmap,
4927 isl_basic_map_offset(bmap, type) + pos, value);
4929 isl_basic_map_free(bmap);
4933 __isl_give isl_basic_map *isl_basic_map_fix(__isl_take isl_basic_map *bmap,
4934 enum isl_dim_type type, unsigned pos, isl_int value)
4938 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
4939 return isl_basic_map_fix_pos(bmap,
4940 isl_basic_map_offset(bmap, type) + pos, value);
4942 isl_basic_map_free(bmap);
4946 struct isl_basic_set *isl_basic_set_fix_si(struct isl_basic_set *bset,
4947 enum isl_dim_type type, unsigned pos, int value)
4949 return (struct isl_basic_set *)
4950 isl_basic_map_fix_si((struct isl_basic_map *)bset,
4954 __isl_give isl_basic_set *isl_basic_set_fix(__isl_take isl_basic_set *bset,
4955 enum isl_dim_type type, unsigned pos, isl_int value)
4957 return (struct isl_basic_set *)
4958 isl_basic_map_fix((struct isl_basic_map *)bset,
4962 struct isl_basic_map *isl_basic_map_fix_input_si(struct isl_basic_map *bmap,
4963 unsigned input, int value)
4965 return isl_basic_map_fix_si(bmap, isl_dim_in, input, value);
4968 struct isl_basic_set *isl_basic_set_fix_dim_si(struct isl_basic_set *bset,
4969 unsigned dim, int value)
4971 return (struct isl_basic_set *)
4972 isl_basic_map_fix_si((struct isl_basic_map *)bset,
4973 isl_dim_set, dim, value);
4976 static int remove_if_empty(__isl_keep isl_map *map, int i)
4978 int empty = isl_basic_map_plain_is_empty(map->p[i]);
4985 isl_basic_map_free(map->p[i]);
4986 if (i != map->n - 1) {
4987 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
4988 map->p[i] = map->p[map->n - 1];
4995 struct isl_map *isl_map_fix_si(struct isl_map *map,
4996 enum isl_dim_type type, unsigned pos, int value)
5000 map = isl_map_cow(map);
5004 isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
5005 for (i = map->n - 1; i >= 0; --i) {
5006 map->p[i] = isl_basic_map_fix_si(map->p[i], type, pos, value);
5007 if (remove_if_empty(map, i) < 0)
5010 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
5017 __isl_give isl_set *isl_set_fix_si(__isl_take isl_set *set,
5018 enum isl_dim_type type, unsigned pos, int value)
5020 return (struct isl_set *)
5021 isl_map_fix_si((struct isl_map *)set, type, pos, value);
5024 __isl_give isl_map *isl_map_fix(__isl_take isl_map *map,
5025 enum isl_dim_type type, unsigned pos, isl_int value)
5029 map = isl_map_cow(map);
5033 isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
5034 for (i = 0; i < map->n; ++i) {
5035 map->p[i] = isl_basic_map_fix(map->p[i], type, pos, value);
5039 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
5046 __isl_give isl_set *isl_set_fix(__isl_take isl_set *set,
5047 enum isl_dim_type type, unsigned pos, isl_int value)
5049 return (struct isl_set *)isl_map_fix((isl_map *)set, type, pos, value);
5052 struct isl_map *isl_map_fix_input_si(struct isl_map *map,
5053 unsigned input, int value)
5055 return isl_map_fix_si(map, isl_dim_in, input, value);
5058 struct isl_set *isl_set_fix_dim_si(struct isl_set *set, unsigned dim, int value)
5060 return (struct isl_set *)
5061 isl_map_fix_si((struct isl_map *)set, isl_dim_set, dim, value);
5064 static __isl_give isl_basic_map *basic_map_bound_si(
5065 __isl_take isl_basic_map *bmap,
5066 enum isl_dim_type type, unsigned pos, int value, int upper)
5072 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
5073 pos += isl_basic_map_offset(bmap, type);
5074 bmap = isl_basic_map_cow(bmap);
5075 bmap = isl_basic_map_extend_constraints(bmap, 0, 1);
5076 j = isl_basic_map_alloc_inequality(bmap);
5079 isl_seq_clr(bmap->ineq[j], 1 + isl_basic_map_total_dim(bmap));
5081 isl_int_set_si(bmap->ineq[j][pos], -1);
5082 isl_int_set_si(bmap->ineq[j][0], value);
5084 isl_int_set_si(bmap->ineq[j][pos], 1);
5085 isl_int_set_si(bmap->ineq[j][0], -value);
5087 bmap = isl_basic_map_simplify(bmap);
5088 return isl_basic_map_finalize(bmap);
5090 isl_basic_map_free(bmap);
5094 __isl_give isl_basic_map *isl_basic_map_lower_bound_si(
5095 __isl_take isl_basic_map *bmap,
5096 enum isl_dim_type type, unsigned pos, int value)
5098 return basic_map_bound_si(bmap, type, pos, value, 0);
5101 struct isl_basic_set *isl_basic_set_lower_bound_dim(struct isl_basic_set *bset,
5102 unsigned dim, isl_int value)
5106 bset = isl_basic_set_cow(bset);
5107 bset = isl_basic_set_extend_constraints(bset, 0, 1);
5108 j = isl_basic_set_alloc_inequality(bset);
5111 isl_seq_clr(bset->ineq[j], 1 + isl_basic_set_total_dim(bset));
5112 isl_int_set_si(bset->ineq[j][1 + isl_basic_set_n_param(bset) + dim], 1);
5113 isl_int_neg(bset->ineq[j][0], value);
5114 bset = isl_basic_set_simplify(bset);
5115 return isl_basic_set_finalize(bset);
5117 isl_basic_set_free(bset);
5121 static __isl_give isl_map *map_bound_si(__isl_take isl_map *map,
5122 enum isl_dim_type type, unsigned pos, int value, int upper)
5126 map = isl_map_cow(map);
5130 isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
5131 for (i = 0; i < map->n; ++i) {
5132 map->p[i] = basic_map_bound_si(map->p[i],
5133 type, pos, value, upper);
5137 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
5144 __isl_give isl_map *isl_map_lower_bound_si(__isl_take isl_map *map,
5145 enum isl_dim_type type, unsigned pos, int value)
5147 return map_bound_si(map, type, pos, value, 0);
5150 __isl_give isl_map *isl_map_upper_bound_si(__isl_take isl_map *map,
5151 enum isl_dim_type type, unsigned pos, int value)
5153 return map_bound_si(map, type, pos, value, 1);
5156 __isl_give isl_set *isl_set_lower_bound_si(__isl_take isl_set *set,
5157 enum isl_dim_type type, unsigned pos, int value)
5159 return (struct isl_set *)
5160 isl_map_lower_bound_si((struct isl_map *)set, type, pos, value);
5163 __isl_give isl_set *isl_set_upper_bound_si(__isl_take isl_set *set,
5164 enum isl_dim_type type, unsigned pos, int value)
5166 return isl_map_upper_bound_si(set, type, pos, value);
5169 /* Bound the given variable of "bmap" from below (or above is "upper"
5170 * is set) to "value".
5172 static __isl_give isl_basic_map *basic_map_bound(
5173 __isl_take isl_basic_map *bmap,
5174 enum isl_dim_type type, unsigned pos, isl_int value, int upper)
5180 if (pos >= isl_basic_map_dim(bmap, type))
5181 isl_die(bmap->ctx, isl_error_invalid,
5182 "index out of bounds", goto error);
5183 pos += isl_basic_map_offset(bmap, type);
5184 bmap = isl_basic_map_cow(bmap);
5185 bmap = isl_basic_map_extend_constraints(bmap, 0, 1);
5186 j = isl_basic_map_alloc_inequality(bmap);
5189 isl_seq_clr(bmap->ineq[j], 1 + isl_basic_map_total_dim(bmap));
5191 isl_int_set_si(bmap->ineq[j][pos], -1);
5192 isl_int_set(bmap->ineq[j][0], value);
5194 isl_int_set_si(bmap->ineq[j][pos], 1);
5195 isl_int_neg(bmap->ineq[j][0], value);
5197 bmap = isl_basic_map_simplify(bmap);
5198 return isl_basic_map_finalize(bmap);
5200 isl_basic_map_free(bmap);
5204 /* Bound the given variable of "map" from below (or above is "upper"
5205 * is set) to "value".
5207 static __isl_give isl_map *map_bound(__isl_take isl_map *map,
5208 enum isl_dim_type type, unsigned pos, isl_int value, int upper)
5212 map = isl_map_cow(map);
5216 if (pos >= isl_map_dim(map, type))
5217 isl_die(map->ctx, isl_error_invalid,
5218 "index out of bounds", goto error);
5219 for (i = map->n - 1; i >= 0; --i) {
5220 map->p[i] = basic_map_bound(map->p[i], type, pos, value, upper);
5221 if (remove_if_empty(map, i) < 0)
5224 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
5231 __isl_give isl_map *isl_map_lower_bound(__isl_take isl_map *map,
5232 enum isl_dim_type type, unsigned pos, isl_int value)
5234 return map_bound(map, type, pos, value, 0);
5237 __isl_give isl_map *isl_map_upper_bound(__isl_take isl_map *map,
5238 enum isl_dim_type type, unsigned pos, isl_int value)
5240 return map_bound(map, type, pos, value, 1);
5243 __isl_give isl_set *isl_set_lower_bound(__isl_take isl_set *set,
5244 enum isl_dim_type type, unsigned pos, isl_int value)
5246 return isl_map_lower_bound(set, type, pos, value);
5249 __isl_give isl_set *isl_set_upper_bound(__isl_take isl_set *set,
5250 enum isl_dim_type type, unsigned pos, isl_int value)
5252 return isl_map_upper_bound(set, type, pos, value);
5255 struct isl_set *isl_set_lower_bound_dim(struct isl_set *set, unsigned dim,
5260 set = isl_set_cow(set);
5264 isl_assert(set->ctx, dim < isl_set_n_dim(set), goto error);
5265 for (i = 0; i < set->n; ++i) {
5266 set->p[i] = isl_basic_set_lower_bound_dim(set->p[i], dim, value);
5276 struct isl_map *isl_map_reverse(struct isl_map *map)
5280 map = isl_map_cow(map);
5284 map->dim = isl_space_reverse(map->dim);
5287 for (i = 0; i < map->n; ++i) {
5288 map->p[i] = isl_basic_map_reverse(map->p[i]);
5292 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
5299 static struct isl_map *isl_basic_map_partial_lexopt(
5300 struct isl_basic_map *bmap, struct isl_basic_set *dom,
5301 struct isl_set **empty, int max)
5305 if (bmap->ctx->opt->pip == ISL_PIP_PIP)
5306 return isl_pip_basic_map_lexopt(bmap, dom, empty, max);
5308 return isl_tab_basic_map_partial_lexopt(bmap, dom, empty, max);
5310 isl_basic_map_free(bmap);
5311 isl_basic_set_free(dom);
5317 struct isl_map *isl_basic_map_partial_lexmax(
5318 struct isl_basic_map *bmap, struct isl_basic_set *dom,
5319 struct isl_set **empty)
5321 return isl_basic_map_partial_lexopt(bmap, dom, empty, 1);
5324 struct isl_map *isl_basic_map_partial_lexmin(
5325 struct isl_basic_map *bmap, struct isl_basic_set *dom,
5326 struct isl_set **empty)
5328 return isl_basic_map_partial_lexopt(bmap, dom, empty, 0);
5331 struct isl_set *isl_basic_set_partial_lexmin(
5332 struct isl_basic_set *bset, struct isl_basic_set *dom,
5333 struct isl_set **empty)
5335 return (struct isl_set *)
5336 isl_basic_map_partial_lexmin((struct isl_basic_map *)bset,
5340 struct isl_set *isl_basic_set_partial_lexmax(
5341 struct isl_basic_set *bset, struct isl_basic_set *dom,
5342 struct isl_set **empty)
5344 return (struct isl_set *)
5345 isl_basic_map_partial_lexmax((struct isl_basic_map *)bset,
5349 __isl_give isl_pw_multi_aff *isl_basic_map_partial_lexmin_pw_multi_aff(
5350 __isl_take isl_basic_map *bmap, __isl_take isl_basic_set *dom,
5351 __isl_give isl_set **empty)
5353 return isl_basic_map_partial_lexopt_pw_multi_aff(bmap, dom, empty, 0);
5356 __isl_give isl_pw_multi_aff *isl_basic_map_partial_lexmax_pw_multi_aff(
5357 __isl_take isl_basic_map *bmap, __isl_take isl_basic_set *dom,
5358 __isl_give isl_set **empty)
5360 return isl_basic_map_partial_lexopt_pw_multi_aff(bmap, dom, empty, 1);
5363 __isl_give isl_pw_multi_aff *isl_basic_set_partial_lexmin_pw_multi_aff(
5364 __isl_take isl_basic_set *bset, __isl_take isl_basic_set *dom,
5365 __isl_give isl_set **empty)
5367 return isl_basic_map_partial_lexmin_pw_multi_aff(bset, dom, empty);
5370 __isl_give isl_pw_multi_aff *isl_basic_set_partial_lexmax_pw_multi_aff(
5371 __isl_take isl_basic_set *bset, __isl_take isl_basic_set *dom,
5372 __isl_give isl_set **empty)
5374 return isl_basic_map_partial_lexmax_pw_multi_aff(bset, dom, empty);
5377 __isl_give isl_pw_multi_aff *isl_basic_map_lexopt_pw_multi_aff(
5378 __isl_take isl_basic_map *bmap, int max)
5380 isl_basic_set *dom = NULL;
5381 isl_space *dom_space;
5385 dom_space = isl_space_domain(isl_space_copy(bmap->dim));
5386 dom = isl_basic_set_universe(dom_space);
5387 return isl_basic_map_partial_lexopt_pw_multi_aff(bmap, dom, NULL, max);
5389 isl_basic_map_free(bmap);
5393 __isl_give isl_pw_multi_aff *isl_basic_map_lexmin_pw_multi_aff(
5394 __isl_take isl_basic_map *bmap)
5396 return isl_basic_map_lexopt_pw_multi_aff(bmap, 0);
5399 /* Given a basic map "bmap", compute the lexicographically minimal
5400 * (or maximal) image element for each domain element in dom.
5401 * Set *empty to those elements in dom that do not have an image element.
5403 * We first make sure the basic sets in dom are disjoint and then
5404 * simply collect the results over each of the basic sets separately.
5405 * We could probably improve the efficiency a bit by moving the union
5406 * domain down into the parametric integer programming.
5408 static __isl_give isl_map *basic_map_partial_lexopt(
5409 __isl_take isl_basic_map *bmap, __isl_take isl_set *dom,
5410 __isl_give isl_set **empty, int max)
5413 struct isl_map *res;
5415 dom = isl_set_make_disjoint(dom);
5419 if (isl_set_plain_is_empty(dom)) {
5420 res = isl_map_empty_like_basic_map(bmap);
5421 *empty = isl_set_empty_like(dom);
5423 isl_basic_map_free(bmap);
5427 res = isl_basic_map_partial_lexopt(isl_basic_map_copy(bmap),
5428 isl_basic_set_copy(dom->p[0]), empty, max);
5430 for (i = 1; i < dom->n; ++i) {
5431 struct isl_map *res_i;
5432 struct isl_set *empty_i;
5434 res_i = isl_basic_map_partial_lexopt(isl_basic_map_copy(bmap),
5435 isl_basic_set_copy(dom->p[i]), &empty_i, max);
5437 res = isl_map_union_disjoint(res, res_i);
5438 *empty = isl_set_union_disjoint(*empty, empty_i);
5442 isl_basic_map_free(bmap);
5447 isl_basic_map_free(bmap);
5451 /* Given a map "map", compute the lexicographically minimal
5452 * (or maximal) image element for each domain element in dom.
5453 * Set *empty to those elements in dom that do not have an image element.
5455 * We first compute the lexicographically minimal or maximal element
5456 * in the first basic map. This results in a partial solution "res"
5457 * and a subset "todo" of dom that still need to be handled.
5458 * We then consider each of the remaining maps in "map" and successively
5459 * improve both "res" and "todo".
5461 * Let res^k and todo^k be the results after k steps and let i = k + 1.
5462 * Assume we are computing the lexicographical maximum.
5463 * We first compute the lexicographically maximal element in basic map i.
5464 * This results in a partial solution res_i and a subset todo_i.
5465 * Then we combine these results with those obtain for the first k basic maps
5466 * to obtain a result that is valid for the first k+1 basic maps.
5467 * In particular, the set where there is no solution is the set where
5468 * there is no solution for the first k basic maps and also no solution
5469 * for the ith basic map, i.e.,
5471 * todo^i = todo^k * todo_i
5473 * On dom(res^k) * dom(res_i), we need to pick the larger of the two
5474 * solutions, arbitrarily breaking ties in favor of res^k.
5475 * That is, when res^k(a) >= res_i(a), we pick res^k and
5476 * when res^k(a) < res_i(a), we pick res_i. (Here, ">=" and "<" denote
5477 * the lexicographic order.)
5478 * In practice, we compute
5480 * res^k * (res_i . "<=")
5484 * res_i * (res^k . "<")
5486 * Finally, we consider the symmetric difference of dom(res^k) and dom(res_i),
5487 * where only one of res^k and res_i provides a solution and we simply pick
5494 * Note that we only compute these intersections when dom(res^k) intersects
5495 * dom(res_i). Otherwise, the only effect of these intersections is to
5496 * potentially break up res^k and res_i into smaller pieces.
5497 * We want to avoid such splintering as much as possible.
5498 * In fact, an earlier implementation of this function would look for
5499 * better results in the domain of res^k and for extra results in todo^k,
5500 * but this would always result in a splintering according to todo^k,
5501 * even when the domain of basic map i is disjoint from the domains of
5502 * the previous basic maps.
5504 static __isl_give isl_map *isl_map_partial_lexopt_aligned(
5505 __isl_take isl_map *map, __isl_take isl_set *dom,
5506 __isl_give isl_set **empty, int max)
5509 struct isl_map *res;
5510 struct isl_set *todo;
5515 if (isl_map_plain_is_empty(map)) {
5523 res = basic_map_partial_lexopt(isl_basic_map_copy(map->p[0]),
5524 isl_set_copy(dom), &todo, max);
5526 for (i = 1; i < map->n; ++i) {
5530 isl_space *dim = isl_space_range(isl_map_get_space(res));
5532 res_i = basic_map_partial_lexopt(isl_basic_map_copy(map->p[i]),
5533 isl_set_copy(dom), &todo_i, max);
5536 lt = isl_map_lex_lt(isl_space_copy(dim));
5537 le = isl_map_lex_le(dim);
5539 lt = isl_map_lex_gt(isl_space_copy(dim));
5540 le = isl_map_lex_ge(dim);
5542 lt = isl_map_apply_range(isl_map_copy(res), lt);
5543 lt = isl_map_intersect(lt, isl_map_copy(res_i));
5544 le = isl_map_apply_range(isl_map_copy(res_i), le);
5545 le = isl_map_intersect(le, isl_map_copy(res));
5547 if (!isl_map_is_empty(lt) || !isl_map_is_empty(le)) {
5548 res = isl_map_intersect_domain(res,
5549 isl_set_copy(todo_i));
5550 res_i = isl_map_intersect_domain(res_i,
5551 isl_set_copy(todo));
5554 res = isl_map_union_disjoint(res, res_i);
5555 res = isl_map_union_disjoint(res, lt);
5556 res = isl_map_union_disjoint(res, le);
5558 todo = isl_set_intersect(todo, todo_i);
5578 /* Given a map "map", compute the lexicographically minimal
5579 * (or maximal) image element for each domain element in dom.
5580 * Set *empty to those elements in dom that do not have an image element.
5582 * Align parameters if needed and then call isl_map_partial_lexopt_aligned.
5584 static __isl_give isl_map *isl_map_partial_lexopt(
5585 __isl_take isl_map *map, __isl_take isl_set *dom,
5586 __isl_give isl_set **empty, int max)
5590 if (isl_space_match(map->dim, isl_dim_param, dom->dim, isl_dim_param))
5591 return isl_map_partial_lexopt_aligned(map, dom, empty, max);
5592 if (!isl_space_has_named_params(map->dim) ||
5593 !isl_space_has_named_params(dom->dim))
5594 isl_die(map->ctx, isl_error_invalid,
5595 "unaligned unnamed parameters", goto error);
5596 map = isl_map_align_params(map, isl_map_get_space(dom));
5597 dom = isl_map_align_params(dom, isl_map_get_space(map));
5598 return isl_map_partial_lexopt_aligned(map, dom, empty, max);
5607 __isl_give isl_map *isl_map_partial_lexmax(
5608 __isl_take isl_map *map, __isl_take isl_set *dom,
5609 __isl_give isl_set **empty)
5611 return isl_map_partial_lexopt(map, dom, empty, 1);
5614 __isl_give isl_map *isl_map_partial_lexmin(
5615 __isl_take isl_map *map, __isl_take isl_set *dom,
5616 __isl_give isl_set **empty)
5618 return isl_map_partial_lexopt(map, dom, empty, 0);
5621 __isl_give isl_set *isl_set_partial_lexmin(
5622 __isl_take isl_set *set, __isl_take isl_set *dom,
5623 __isl_give isl_set **empty)
5625 return (struct isl_set *)
5626 isl_map_partial_lexmin((struct isl_map *)set,
5630 __isl_give isl_set *isl_set_partial_lexmax(
5631 __isl_take isl_set *set, __isl_take isl_set *dom,
5632 __isl_give isl_set **empty)
5634 return (struct isl_set *)
5635 isl_map_partial_lexmax((struct isl_map *)set,
5639 __isl_give isl_map *isl_basic_map_lexopt(__isl_take isl_basic_map *bmap, int max)
5641 struct isl_basic_set *dom = NULL;
5646 dom_dim = isl_space_domain(isl_space_copy(bmap->dim));
5647 dom = isl_basic_set_universe(dom_dim);
5648 return isl_basic_map_partial_lexopt(bmap, dom, NULL, max);
5650 isl_basic_map_free(bmap);
5654 __isl_give isl_map *isl_basic_map_lexmin(__isl_take isl_basic_map *bmap)
5656 return isl_basic_map_lexopt(bmap, 0);
5659 __isl_give isl_map *isl_basic_map_lexmax(__isl_take isl_basic_map *bmap)
5661 return isl_basic_map_lexopt(bmap, 1);
5664 __isl_give isl_set *isl_basic_set_lexmin(__isl_take isl_basic_set *bset)
5666 return (isl_set *)isl_basic_map_lexmin((isl_basic_map *)bset);
5669 __isl_give isl_set *isl_basic_set_lexmax(__isl_take isl_basic_set *bset)
5671 return (isl_set *)isl_basic_map_lexmax((isl_basic_map *)bset);
5674 __isl_give isl_map *isl_map_lexopt(__isl_take isl_map *map, int max)
5676 struct isl_set *dom = NULL;
5681 dom_dim = isl_space_domain(isl_space_copy(map->dim));
5682 dom = isl_set_universe(dom_dim);
5683 return isl_map_partial_lexopt(map, dom, NULL, max);
5689 __isl_give isl_map *isl_map_lexmin(__isl_take isl_map *map)
5691 return isl_map_lexopt(map, 0);
5694 __isl_give isl_map *isl_map_lexmax(__isl_take isl_map *map)
5696 return isl_map_lexopt(map, 1);
5699 __isl_give isl_set *isl_set_lexmin(__isl_take isl_set *set)
5701 return (isl_set *)isl_map_lexmin((isl_map *)set);
5704 __isl_give isl_set *isl_set_lexmax(__isl_take isl_set *set)
5706 return (isl_set *)isl_map_lexmax((isl_map *)set);
5709 /* Extract the first and only affine expression from list
5710 * and then add it to *pwaff with the given dom.
5711 * This domain is known to be disjoint from other domains
5712 * because of the way isl_basic_map_foreach_lexmax works.
5714 static int update_dim_opt(__isl_take isl_basic_set *dom,
5715 __isl_take isl_aff_list *list, void *user)
5717 isl_ctx *ctx = isl_basic_set_get_ctx(dom);
5719 isl_pw_aff **pwaff = user;
5720 isl_pw_aff *pwaff_i;
5722 if (isl_aff_list_n_aff(list) != 1)
5723 isl_die(ctx, isl_error_internal,
5724 "expecting single element list", goto error);
5726 aff = isl_aff_list_get_aff(list, 0);
5727 pwaff_i = isl_pw_aff_alloc(isl_set_from_basic_set(dom), aff);
5729 *pwaff = isl_pw_aff_add_disjoint(*pwaff, pwaff_i);
5731 isl_aff_list_free(list);
5735 isl_basic_set_free(dom);
5736 isl_aff_list_free(list);
5740 /* Given a basic map with one output dimension, compute the minimum or
5741 * maximum of that dimension as an isl_pw_aff.
5743 * The isl_pw_aff is constructed by having isl_basic_map_foreach_lexopt
5744 * call update_dim_opt on each leaf of the result.
5746 static __isl_give isl_pw_aff *basic_map_dim_opt(__isl_keep isl_basic_map *bmap,
5749 isl_space *dim = isl_basic_map_get_space(bmap);
5753 dim = isl_space_from_domain(isl_space_domain(dim));
5754 dim = isl_space_add_dims(dim, isl_dim_out, 1);
5755 pwaff = isl_pw_aff_empty(dim);
5757 r = isl_basic_map_foreach_lexopt(bmap, max, &update_dim_opt, &pwaff);
5759 return isl_pw_aff_free(pwaff);
5764 /* Compute the minimum or maximum of the given output dimension
5765 * as a function of the parameters and the input dimensions,
5766 * but independently of the other output dimensions.
5768 * We first project out the other output dimension and then compute
5769 * the "lexicographic" maximum in each basic map, combining the results
5770 * using isl_pw_aff_union_max.
5772 static __isl_give isl_pw_aff *map_dim_opt(__isl_take isl_map *map, int pos,
5779 n_out = isl_map_dim(map, isl_dim_out);
5780 map = isl_map_project_out(map, isl_dim_out, pos + 1, n_out - (pos + 1));
5781 map = isl_map_project_out(map, isl_dim_out, 0, pos);
5786 isl_space *dim = isl_map_get_space(map);
5787 dim = isl_space_domain(isl_space_from_range(dim));
5789 return isl_pw_aff_empty(dim);
5792 pwaff = basic_map_dim_opt(map->p[0], max);
5793 for (i = 1; i < map->n; ++i) {
5794 isl_pw_aff *pwaff_i;
5796 pwaff_i = basic_map_dim_opt(map->p[i], max);
5797 pwaff = isl_pw_aff_union_opt(pwaff, pwaff_i, max);
5805 /* Compute the maximum of the given output dimension as a function of the
5806 * parameters and input dimensions, but independently of
5807 * the other output dimensions.
5809 __isl_give isl_pw_aff *isl_map_dim_max(__isl_take isl_map *map, int pos)
5811 return map_dim_opt(map, pos, 1);
5814 /* Compute the minimum or maximum of the given set dimension
5815 * as a function of the parameters,
5816 * but independently of the other set dimensions.
5818 static __isl_give isl_pw_aff *set_dim_opt(__isl_take isl_set *set, int pos,
5821 return map_dim_opt(set, pos, max);
5824 /* Compute the maximum of the given set dimension as a function of the
5825 * parameters, but independently of the other set dimensions.
5827 __isl_give isl_pw_aff *isl_set_dim_max(__isl_take isl_set *set, int pos)
5829 return set_dim_opt(set, pos, 1);
5832 /* Compute the minimum of the given set dimension as a function of the
5833 * parameters, but independently of the other set dimensions.
5835 __isl_give isl_pw_aff *isl_set_dim_min(__isl_take isl_set *set, int pos)
5837 return set_dim_opt(set, pos, 0);
5840 /* Apply a preimage specified by "mat" on the parameters of "bset".
5841 * bset is assumed to have only parameters and divs.
5843 static struct isl_basic_set *basic_set_parameter_preimage(
5844 struct isl_basic_set *bset, struct isl_mat *mat)
5851 bset->dim = isl_space_cow(bset->dim);
5855 nparam = isl_basic_set_dim(bset, isl_dim_param);
5857 isl_assert(bset->ctx, mat->n_row == 1 + nparam, goto error);
5859 bset->dim->nparam = 0;
5860 bset->dim->n_out = nparam;
5861 bset = isl_basic_set_preimage(bset, mat);
5863 bset->dim->nparam = bset->dim->n_out;
5864 bset->dim->n_out = 0;
5869 isl_basic_set_free(bset);
5873 /* Apply a preimage specified by "mat" on the parameters of "set".
5874 * set is assumed to have only parameters and divs.
5876 static struct isl_set *set_parameter_preimage(
5877 struct isl_set *set, struct isl_mat *mat)
5879 isl_space *dim = NULL;
5885 dim = isl_space_copy(set->dim);
5886 dim = isl_space_cow(dim);
5890 nparam = isl_set_dim(set, isl_dim_param);
5892 isl_assert(set->ctx, mat->n_row == 1 + nparam, goto error);
5895 dim->n_out = nparam;
5896 isl_set_reset_space(set, dim);
5897 set = isl_set_preimage(set, mat);
5900 dim = isl_space_copy(set->dim);
5901 dim = isl_space_cow(dim);
5904 dim->nparam = dim->n_out;
5906 isl_set_reset_space(set, dim);
5909 isl_space_free(dim);
5916 /* Intersect the basic set "bset" with the affine space specified by the
5917 * equalities in "eq".
5919 static struct isl_basic_set *basic_set_append_equalities(
5920 struct isl_basic_set *bset, struct isl_mat *eq)
5928 bset = isl_basic_set_extend_space(bset, isl_space_copy(bset->dim), 0,
5933 len = 1 + isl_space_dim(bset->dim, isl_dim_all) + bset->extra;
5934 for (i = 0; i < eq->n_row; ++i) {
5935 k = isl_basic_set_alloc_equality(bset);
5938 isl_seq_cpy(bset->eq[k], eq->row[i], eq->n_col);
5939 isl_seq_clr(bset->eq[k] + eq->n_col, len - eq->n_col);
5943 bset = isl_basic_set_gauss(bset, NULL);
5944 bset = isl_basic_set_finalize(bset);
5949 isl_basic_set_free(bset);
5953 /* Intersect the set "set" with the affine space specified by the
5954 * equalities in "eq".
5956 static struct isl_set *set_append_equalities(struct isl_set *set,
5964 for (i = 0; i < set->n; ++i) {
5965 set->p[i] = basic_set_append_equalities(set->p[i],
5978 /* Project the given basic set onto its parameter domain, possibly introducing
5979 * new, explicit, existential variables in the constraints.
5980 * The input has parameters and (possibly implicit) existential variables.
5981 * The output has the same parameters, but only
5982 * explicit existentially quantified variables.
5984 * The actual projection is performed by pip, but pip doesn't seem
5985 * to like equalities very much, so we first remove the equalities
5986 * among the parameters by performing a variable compression on
5987 * the parameters. Afterward, an inverse transformation is performed
5988 * and the equalities among the parameters are inserted back in.
5990 static struct isl_set *parameter_compute_divs(struct isl_basic_set *bset)
5994 struct isl_mat *T, *T2;
5995 struct isl_set *set;
5996 unsigned nparam, n_div;
5998 bset = isl_basic_set_cow(bset);
6002 if (bset->n_eq == 0)
6003 return isl_basic_set_lexmin(bset);
6005 isl_basic_set_gauss(bset, NULL);
6007 nparam = isl_basic_set_dim(bset, isl_dim_param);
6008 n_div = isl_basic_set_dim(bset, isl_dim_div);
6010 for (i = 0, j = n_div - 1; i < bset->n_eq && j >= 0; --j) {
6011 if (!isl_int_is_zero(bset->eq[i][1 + nparam + j]))
6014 if (i == bset->n_eq)
6015 return isl_basic_set_lexmin(bset);
6017 eq = isl_mat_sub_alloc6(bset->ctx, bset->eq, i, bset->n_eq - i,
6019 eq = isl_mat_cow(eq);
6020 T = isl_mat_variable_compression(isl_mat_copy(eq), &T2);
6021 if (T && T->n_col == 0) {
6025 bset = isl_basic_set_set_to_empty(bset);
6026 return isl_set_from_basic_set(bset);
6028 bset = basic_set_parameter_preimage(bset, T);
6030 set = isl_basic_set_lexmin(bset);
6031 set = set_parameter_preimage(set, T2);
6032 set = set_append_equalities(set, eq);
6036 /* Compute an explicit representation for all the existentially
6037 * quantified variables.
6038 * The input and output dimensions are first turned into parameters.
6039 * compute_divs then returns a map with the same parameters and
6040 * no input or output dimensions and the dimension specification
6041 * is reset to that of the input.
6043 static struct isl_map *compute_divs(struct isl_basic_map *bmap)
6045 struct isl_basic_set *bset;
6046 struct isl_set *set;
6047 struct isl_map *map;
6048 isl_space *dim, *orig_dim = NULL;
6053 bmap = isl_basic_map_cow(bmap);
6057 nparam = isl_basic_map_dim(bmap, isl_dim_param);
6058 n_in = isl_basic_map_dim(bmap, isl_dim_in);
6059 n_out = isl_basic_map_dim(bmap, isl_dim_out);
6060 dim = isl_space_set_alloc(bmap->ctx, nparam + n_in + n_out, 0);
6064 orig_dim = bmap->dim;
6066 bset = (struct isl_basic_set *)bmap;
6068 set = parameter_compute_divs(bset);
6069 map = (struct isl_map *)set;
6070 map = isl_map_reset_space(map, orig_dim);
6074 isl_basic_map_free(bmap);
6078 int isl_basic_map_divs_known(__isl_keep isl_basic_map *bmap)
6086 off = isl_space_dim(bmap->dim, isl_dim_all);
6087 for (i = 0; i < bmap->n_div; ++i) {
6088 if (isl_int_is_zero(bmap->div[i][0]))
6090 isl_assert(bmap->ctx, isl_int_is_zero(bmap->div[i][1+1+off+i]),
6096 static int map_divs_known(__isl_keep isl_map *map)
6103 for (i = 0; i < map->n; ++i) {
6104 int known = isl_basic_map_divs_known(map->p[i]);
6112 /* If bmap contains any unknown divs, then compute explicit
6113 * expressions for them. However, this computation may be
6114 * quite expensive, so first try to remove divs that aren't
6117 struct isl_map *isl_basic_map_compute_divs(struct isl_basic_map *bmap)
6120 struct isl_map *map;
6122 known = isl_basic_map_divs_known(bmap);
6126 return isl_map_from_basic_map(bmap);
6128 bmap = isl_basic_map_drop_redundant_divs(bmap);
6130 known = isl_basic_map_divs_known(bmap);
6134 return isl_map_from_basic_map(bmap);
6136 map = compute_divs(bmap);
6139 isl_basic_map_free(bmap);
6143 struct isl_map *isl_map_compute_divs(struct isl_map *map)
6147 struct isl_map *res;
6154 known = map_divs_known(map);
6162 res = isl_basic_map_compute_divs(isl_basic_map_copy(map->p[0]));
6163 for (i = 1 ; i < map->n; ++i) {
6165 r2 = isl_basic_map_compute_divs(isl_basic_map_copy(map->p[i]));
6166 if (ISL_F_ISSET(map, ISL_MAP_DISJOINT))
6167 res = isl_map_union_disjoint(res, r2);
6169 res = isl_map_union(res, r2);
6176 struct isl_set *isl_basic_set_compute_divs(struct isl_basic_set *bset)
6178 return (struct isl_set *)
6179 isl_basic_map_compute_divs((struct isl_basic_map *)bset);
6182 struct isl_set *isl_set_compute_divs(struct isl_set *set)
6184 return (struct isl_set *)
6185 isl_map_compute_divs((struct isl_map *)set);
6188 struct isl_set *isl_map_domain(struct isl_map *map)
6191 struct isl_set *set;
6196 map = isl_map_cow(map);
6200 set = (struct isl_set *)map;
6201 set->dim = isl_space_domain(set->dim);
6204 for (i = 0; i < map->n; ++i) {
6205 set->p[i] = isl_basic_map_domain(map->p[i]);
6209 ISL_F_CLR(set, ISL_MAP_DISJOINT);
6210 ISL_F_CLR(set, ISL_SET_NORMALIZED);
6217 static __isl_give isl_map *map_union_disjoint(__isl_take isl_map *map1,
6218 __isl_take isl_map *map2)
6222 struct isl_map *map = NULL;
6236 isl_assert(map1->ctx, isl_space_is_equal(map1->dim, map2->dim), goto error);
6238 if (ISL_F_ISSET(map1, ISL_MAP_DISJOINT) &&
6239 ISL_F_ISSET(map2, ISL_MAP_DISJOINT))
6240 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
6242 map = isl_map_alloc_space(isl_space_copy(map1->dim),
6243 map1->n + map2->n, flags);
6246 for (i = 0; i < map1->n; ++i) {
6247 map = isl_map_add_basic_map(map,
6248 isl_basic_map_copy(map1->p[i]));
6252 for (i = 0; i < map2->n; ++i) {
6253 map = isl_map_add_basic_map(map,
6254 isl_basic_map_copy(map2->p[i]));
6268 __isl_give isl_map *isl_map_union_disjoint(__isl_take isl_map *map1,
6269 __isl_take isl_map *map2)
6271 return isl_map_align_params_map_map_and(map1, map2, &map_union_disjoint);
6274 struct isl_map *isl_map_union(struct isl_map *map1, struct isl_map *map2)
6276 map1 = isl_map_union_disjoint(map1, map2);
6280 ISL_F_CLR(map1, ISL_MAP_DISJOINT);
6284 struct isl_set *isl_set_union_disjoint(
6285 struct isl_set *set1, struct isl_set *set2)
6287 return (struct isl_set *)
6288 isl_map_union_disjoint(
6289 (struct isl_map *)set1, (struct isl_map *)set2);
6292 struct isl_set *isl_set_union(struct isl_set *set1, struct isl_set *set2)
6294 return (struct isl_set *)
6295 isl_map_union((struct isl_map *)set1, (struct isl_map *)set2);
6298 static __isl_give isl_map *map_intersect_range(__isl_take isl_map *map,
6299 __isl_take isl_set *set)
6302 struct isl_map *result;
6308 if (!isl_space_match(map->dim, isl_dim_param, set->dim, isl_dim_param))
6309 isl_die(set->ctx, isl_error_invalid,
6310 "parameters don't match", goto error);
6312 if (isl_space_dim(set->dim, isl_dim_set) != 0 &&
6313 !isl_map_compatible_range(map, set))
6314 isl_die(set->ctx, isl_error_invalid,
6315 "incompatible spaces", goto error);
6317 if (isl_set_plain_is_universe(set)) {
6322 if (ISL_F_ISSET(map, ISL_MAP_DISJOINT) &&
6323 ISL_F_ISSET(set, ISL_MAP_DISJOINT))
6324 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
6326 result = isl_map_alloc_space(isl_space_copy(map->dim),
6327 map->n * set->n, flags);
6330 for (i = 0; i < map->n; ++i)
6331 for (j = 0; j < set->n; ++j) {
6332 result = isl_map_add_basic_map(result,
6333 isl_basic_map_intersect_range(
6334 isl_basic_map_copy(map->p[i]),
6335 isl_basic_set_copy(set->p[j])));
6348 __isl_give isl_map *isl_map_intersect_range(__isl_take isl_map *map,
6349 __isl_take isl_set *set)
6351 return isl_map_align_params_map_map_and(map, set, &map_intersect_range);
6354 struct isl_map *isl_map_intersect_domain(
6355 struct isl_map *map, struct isl_set *set)
6357 return isl_map_reverse(
6358 isl_map_intersect_range(isl_map_reverse(map), set));
6361 static __isl_give isl_map *map_apply_domain(__isl_take isl_map *map1,
6362 __isl_take isl_map *map2)
6366 map1 = isl_map_reverse(map1);
6367 map1 = isl_map_apply_range(map1, map2);
6368 return isl_map_reverse(map1);
6375 __isl_give isl_map *isl_map_apply_domain(__isl_take isl_map *map1,
6376 __isl_take isl_map *map2)
6378 return isl_map_align_params_map_map_and(map1, map2, &map_apply_domain);
6381 static __isl_give isl_map *map_apply_range(__isl_take isl_map *map1,
6382 __isl_take isl_map *map2)
6384 isl_space *dim_result;
6385 struct isl_map *result;
6391 dim_result = isl_space_join(isl_space_copy(map1->dim),
6392 isl_space_copy(map2->dim));
6394 result = isl_map_alloc_space(dim_result, map1->n * map2->n, 0);
6397 for (i = 0; i < map1->n; ++i)
6398 for (j = 0; j < map2->n; ++j) {
6399 result = isl_map_add_basic_map(result,
6400 isl_basic_map_apply_range(
6401 isl_basic_map_copy(map1->p[i]),
6402 isl_basic_map_copy(map2->p[j])));
6408 if (result && result->n <= 1)
6409 ISL_F_SET(result, ISL_MAP_DISJOINT);
6417 __isl_give isl_map *isl_map_apply_range(__isl_take isl_map *map1,
6418 __isl_take isl_map *map2)
6420 return isl_map_align_params_map_map_and(map1, map2, &map_apply_range);
6424 * returns range - domain
6426 struct isl_basic_set *isl_basic_map_deltas(struct isl_basic_map *bmap)
6428 isl_space *dims, *target_dim;
6429 struct isl_basic_set *bset;
6436 isl_assert(bmap->ctx, isl_space_tuple_match(bmap->dim, isl_dim_in,
6437 bmap->dim, isl_dim_out),
6439 target_dim = isl_space_domain(isl_basic_map_get_space(bmap));
6440 dim = isl_basic_map_n_in(bmap);
6441 nparam = isl_basic_map_n_param(bmap);
6442 bset = isl_basic_set_from_basic_map(bmap);
6443 bset = isl_basic_set_cow(bset);
6444 dims = isl_basic_set_get_space(bset);
6445 dims = isl_space_add_dims(dims, isl_dim_set, dim);
6446 bset = isl_basic_set_extend_space(bset, dims, 0, dim, 0);
6447 bset = isl_basic_set_swap_vars(bset, 2*dim);
6448 for (i = 0; i < dim; ++i) {
6449 int j = isl_basic_map_alloc_equality(
6450 (struct isl_basic_map *)bset);
6453 isl_seq_clr(bset->eq[j], 1 + isl_basic_set_total_dim(bset));
6454 isl_int_set_si(bset->eq[j][1+nparam+i], 1);
6455 isl_int_set_si(bset->eq[j][1+nparam+dim+i], 1);
6456 isl_int_set_si(bset->eq[j][1+nparam+2*dim+i], -1);
6458 bset = isl_basic_set_project_out(bset, isl_dim_set, dim, 2*dim);
6459 bset = isl_basic_set_reset_space(bset, target_dim);
6462 isl_basic_map_free(bmap);
6467 * returns range - domain
6469 __isl_give isl_set *isl_map_deltas(__isl_take isl_map *map)
6473 struct isl_set *result;
6478 isl_assert(map->ctx, isl_space_tuple_match(map->dim, isl_dim_in,
6479 map->dim, isl_dim_out),
6481 dim = isl_map_get_space(map);
6482 dim = isl_space_domain(dim);
6483 result = isl_set_alloc_space(dim, map->n, 0);
6486 for (i = 0; i < map->n; ++i)
6487 result = isl_set_add_basic_set(result,
6488 isl_basic_map_deltas(isl_basic_map_copy(map->p[i])));
6497 * returns [domain -> range] -> range - domain
6499 __isl_give isl_basic_map *isl_basic_map_deltas_map(
6500 __isl_take isl_basic_map *bmap)
6504 isl_basic_map *domain;
6508 if (!isl_space_tuple_match(bmap->dim, isl_dim_in, bmap->dim, isl_dim_out))
6509 isl_die(bmap->ctx, isl_error_invalid,
6510 "domain and range don't match", goto error);
6512 nparam = isl_basic_map_dim(bmap, isl_dim_param);
6513 n = isl_basic_map_dim(bmap, isl_dim_in);
6515 dim = isl_space_from_range(isl_space_domain(isl_basic_map_get_space(bmap)));
6516 domain = isl_basic_map_universe(dim);
6518 bmap = isl_basic_map_from_domain(isl_basic_map_wrap(bmap));
6519 bmap = isl_basic_map_apply_range(bmap, domain);
6520 bmap = isl_basic_map_extend_constraints(bmap, n, 0);
6522 total = isl_basic_map_total_dim(bmap);
6524 for (i = 0; i < n; ++i) {
6525 k = isl_basic_map_alloc_equality(bmap);
6528 isl_seq_clr(bmap->eq[k], 1 + total);
6529 isl_int_set_si(bmap->eq[k][1 + nparam + i], 1);
6530 isl_int_set_si(bmap->eq[k][1 + nparam + n + i], -1);
6531 isl_int_set_si(bmap->eq[k][1 + nparam + n + n + i], 1);
6534 bmap = isl_basic_map_gauss(bmap, NULL);
6535 return isl_basic_map_finalize(bmap);
6537 isl_basic_map_free(bmap);
6542 * returns [domain -> range] -> range - domain
6544 __isl_give isl_map *isl_map_deltas_map(__isl_take isl_map *map)
6547 isl_space *domain_dim;
6552 if (!isl_space_tuple_match(map->dim, isl_dim_in, map->dim, isl_dim_out))
6553 isl_die(map->ctx, isl_error_invalid,
6554 "domain and range don't match", goto error);
6556 map = isl_map_cow(map);
6560 domain_dim = isl_space_from_range(isl_space_domain(isl_map_get_space(map)));
6561 map->dim = isl_space_from_domain(isl_space_wrap(map->dim));
6562 map->dim = isl_space_join(map->dim, domain_dim);
6565 for (i = 0; i < map->n; ++i) {
6566 map->p[i] = isl_basic_map_deltas_map(map->p[i]);
6570 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
6577 __isl_give struct isl_basic_map *basic_map_identity(__isl_take isl_space *dims)
6579 struct isl_basic_map *bmap;
6587 nparam = dims->nparam;
6589 bmap = isl_basic_map_alloc_space(dims, 0, dim, 0);
6593 for (i = 0; i < dim; ++i) {
6594 int j = isl_basic_map_alloc_equality(bmap);
6597 isl_seq_clr(bmap->eq[j], 1 + isl_basic_map_total_dim(bmap));
6598 isl_int_set_si(bmap->eq[j][1+nparam+i], 1);
6599 isl_int_set_si(bmap->eq[j][1+nparam+dim+i], -1);
6601 return isl_basic_map_finalize(bmap);
6603 isl_basic_map_free(bmap);
6607 __isl_give isl_basic_map *isl_basic_map_identity(__isl_take isl_space *dim)
6611 if (dim->n_in != dim->n_out)
6612 isl_die(dim->ctx, isl_error_invalid,
6613 "number of input and output dimensions needs to be "
6614 "the same", goto error);
6615 return basic_map_identity(dim);
6617 isl_space_free(dim);
6621 struct isl_basic_map *isl_basic_map_identity_like(struct isl_basic_map *model)
6623 if (!model || !model->dim)
6625 return isl_basic_map_identity(isl_space_copy(model->dim));
6628 __isl_give isl_map *isl_map_identity(__isl_take isl_space *dim)
6630 return isl_map_from_basic_map(isl_basic_map_identity(dim));
6633 struct isl_map *isl_map_identity_like(struct isl_map *model)
6635 if (!model || !model->dim)
6637 return isl_map_identity(isl_space_copy(model->dim));
6640 struct isl_map *isl_map_identity_like_basic_map(struct isl_basic_map *model)
6642 if (!model || !model->dim)
6644 return isl_map_identity(isl_space_copy(model->dim));
6647 __isl_give isl_map *isl_set_identity(__isl_take isl_set *set)
6649 isl_space *dim = isl_set_get_space(set);
6651 id = isl_map_identity(isl_space_map_from_set(dim));
6652 return isl_map_intersect_range(id, set);
6655 /* Construct a basic set with all set dimensions having only non-negative
6658 __isl_give isl_basic_set *isl_basic_set_positive_orthant(
6659 __isl_take isl_space *space)
6664 struct isl_basic_set *bset;
6668 nparam = space->nparam;
6670 bset = isl_basic_set_alloc_space(space, 0, 0, dim);
6673 for (i = 0; i < dim; ++i) {
6674 int k = isl_basic_set_alloc_inequality(bset);
6677 isl_seq_clr(bset->ineq[k], 1 + isl_basic_set_total_dim(bset));
6678 isl_int_set_si(bset->ineq[k][1 + nparam + i], 1);
6682 isl_basic_set_free(bset);
6686 /* Construct the half-space x_pos >= 0.
6688 static __isl_give isl_basic_set *nonneg_halfspace(__isl_take isl_space *dim,
6692 isl_basic_set *nonneg;
6694 nonneg = isl_basic_set_alloc_space(dim, 0, 0, 1);
6695 k = isl_basic_set_alloc_inequality(nonneg);
6698 isl_seq_clr(nonneg->ineq[k], 1 + isl_basic_set_total_dim(nonneg));
6699 isl_int_set_si(nonneg->ineq[k][pos], 1);
6701 return isl_basic_set_finalize(nonneg);
6703 isl_basic_set_free(nonneg);
6707 /* Construct the half-space x_pos <= -1.
6709 static __isl_give isl_basic_set *neg_halfspace(__isl_take isl_space *dim, int pos)
6714 neg = isl_basic_set_alloc_space(dim, 0, 0, 1);
6715 k = isl_basic_set_alloc_inequality(neg);
6718 isl_seq_clr(neg->ineq[k], 1 + isl_basic_set_total_dim(neg));
6719 isl_int_set_si(neg->ineq[k][0], -1);
6720 isl_int_set_si(neg->ineq[k][pos], -1);
6722 return isl_basic_set_finalize(neg);
6724 isl_basic_set_free(neg);
6728 __isl_give isl_set *isl_set_split_dims(__isl_take isl_set *set,
6729 enum isl_dim_type type, unsigned first, unsigned n)
6732 isl_basic_set *nonneg;
6740 isl_assert(set->ctx, first + n <= isl_set_dim(set, type), goto error);
6742 for (i = 0; i < n; ++i) {
6743 nonneg = nonneg_halfspace(isl_set_get_space(set),
6744 pos(set->dim, type) + first + i);
6745 neg = neg_halfspace(isl_set_get_space(set),
6746 pos(set->dim, type) + first + i);
6748 set = isl_set_intersect(set, isl_basic_set_union(nonneg, neg));
6757 static int foreach_orthant(__isl_take isl_set *set, int *signs, int first,
6758 int len, int (*fn)(__isl_take isl_set *orthant, int *signs, void *user),
6765 if (isl_set_plain_is_empty(set)) {
6770 return fn(set, signs, user);
6773 half = isl_set_from_basic_set(nonneg_halfspace(isl_set_get_space(set),
6775 half = isl_set_intersect(half, isl_set_copy(set));
6776 if (foreach_orthant(half, signs, first + 1, len, fn, user) < 0)
6780 half = isl_set_from_basic_set(neg_halfspace(isl_set_get_space(set),
6782 half = isl_set_intersect(half, set);
6783 return foreach_orthant(half, signs, first + 1, len, fn, user);
6789 /* Call "fn" on the intersections of "set" with each of the orthants
6790 * (except for obviously empty intersections). The orthant is identified
6791 * by the signs array, with each entry having value 1 or -1 according
6792 * to the sign of the corresponding variable.
6794 int isl_set_foreach_orthant(__isl_keep isl_set *set,
6795 int (*fn)(__isl_take isl_set *orthant, int *signs, void *user),
6805 if (isl_set_plain_is_empty(set))
6808 nparam = isl_set_dim(set, isl_dim_param);
6809 nvar = isl_set_dim(set, isl_dim_set);
6811 signs = isl_alloc_array(set->ctx, int, nparam + nvar);
6813 r = foreach_orthant(isl_set_copy(set), signs, 0, nparam + nvar,
6821 int isl_set_is_equal(struct isl_set *set1, struct isl_set *set2)
6823 return isl_map_is_equal((struct isl_map *)set1, (struct isl_map *)set2);
6826 int isl_basic_map_is_subset(
6827 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
6830 struct isl_map *map1;
6831 struct isl_map *map2;
6833 if (!bmap1 || !bmap2)
6836 map1 = isl_map_from_basic_map(isl_basic_map_copy(bmap1));
6837 map2 = isl_map_from_basic_map(isl_basic_map_copy(bmap2));
6839 is_subset = isl_map_is_subset(map1, map2);
6847 int isl_basic_set_is_subset(__isl_keep isl_basic_set *bset1,
6848 __isl_keep isl_basic_set *bset2)
6850 return isl_basic_map_is_subset(bset1, bset2);
6853 int isl_basic_map_is_equal(
6854 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
6858 if (!bmap1 || !bmap2)
6860 is_subset = isl_basic_map_is_subset(bmap1, bmap2);
6863 is_subset = isl_basic_map_is_subset(bmap2, bmap1);
6867 int isl_basic_set_is_equal(
6868 struct isl_basic_set *bset1, struct isl_basic_set *bset2)
6870 return isl_basic_map_is_equal(
6871 (struct isl_basic_map *)bset1, (struct isl_basic_map *)bset2);
6874 int isl_map_is_empty(struct isl_map *map)
6881 for (i = 0; i < map->n; ++i) {
6882 is_empty = isl_basic_map_is_empty(map->p[i]);
6891 int isl_map_plain_is_empty(__isl_keep isl_map *map)
6893 return map ? map->n == 0 : -1;
6896 int isl_map_fast_is_empty(__isl_keep isl_map *map)
6898 return isl_map_plain_is_empty(map);
6901 int isl_set_plain_is_empty(struct isl_set *set)
6903 return set ? set->n == 0 : -1;
6906 int isl_set_fast_is_empty(__isl_keep isl_set *set)
6908 return isl_set_plain_is_empty(set);
6911 int isl_set_is_empty(struct isl_set *set)
6913 return isl_map_is_empty((struct isl_map *)set);
6916 int isl_map_has_equal_space(__isl_keep isl_map *map1, __isl_keep isl_map *map2)
6921 return isl_space_is_equal(map1->dim, map2->dim);
6924 int isl_set_has_equal_space(__isl_keep isl_set *set1, __isl_keep isl_set *set2)
6929 return isl_space_is_equal(set1->dim, set2->dim);
6932 static int map_is_equal(__isl_keep isl_map *map1, __isl_keep isl_map *map2)
6938 is_subset = isl_map_is_subset(map1, map2);
6941 is_subset = isl_map_is_subset(map2, map1);
6945 int isl_map_is_equal(__isl_keep isl_map *map1, __isl_keep isl_map *map2)
6947 return isl_map_align_params_map_map_and_test(map1, map2, &map_is_equal);
6950 int isl_basic_map_is_strict_subset(
6951 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
6955 if (!bmap1 || !bmap2)
6957 is_subset = isl_basic_map_is_subset(bmap1, bmap2);
6960 is_subset = isl_basic_map_is_subset(bmap2, bmap1);
6961 if (is_subset == -1)
6966 int isl_map_is_strict_subset(struct isl_map *map1, struct isl_map *map2)
6972 is_subset = isl_map_is_subset(map1, map2);
6975 is_subset = isl_map_is_subset(map2, map1);
6976 if (is_subset == -1)
6981 int isl_set_is_strict_subset(__isl_keep isl_set *set1, __isl_keep isl_set *set2)
6983 return isl_map_is_strict_subset((isl_map *)set1, (isl_map *)set2);
6986 int isl_basic_map_is_universe(struct isl_basic_map *bmap)
6990 return bmap->n_eq == 0 && bmap->n_ineq == 0;
6993 int isl_basic_set_is_universe(struct isl_basic_set *bset)
6997 return bset->n_eq == 0 && bset->n_ineq == 0;
7000 int isl_map_plain_is_universe(__isl_keep isl_map *map)
7007 for (i = 0; i < map->n; ++i) {
7008 int r = isl_basic_map_is_universe(map->p[i]);
7016 int isl_set_plain_is_universe(__isl_keep isl_set *set)
7018 return isl_map_plain_is_universe((isl_map *) set);
7021 int isl_set_fast_is_universe(__isl_keep isl_set *set)
7023 return isl_set_plain_is_universe(set);
7026 int isl_basic_map_is_empty(struct isl_basic_map *bmap)
7028 struct isl_basic_set *bset = NULL;
7029 struct isl_vec *sample = NULL;
7036 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_EMPTY))
7039 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_RATIONAL)) {
7040 struct isl_basic_map *copy = isl_basic_map_copy(bmap);
7041 copy = isl_basic_map_remove_redundancies(copy);
7042 empty = ISL_F_ISSET(copy, ISL_BASIC_MAP_EMPTY);
7043 isl_basic_map_free(copy);
7047 total = 1 + isl_basic_map_total_dim(bmap);
7048 if (bmap->sample && bmap->sample->size == total) {
7049 int contains = isl_basic_map_contains(bmap, bmap->sample);
7055 isl_vec_free(bmap->sample);
7056 bmap->sample = NULL;
7057 bset = isl_basic_map_underlying_set(isl_basic_map_copy(bmap));
7060 sample = isl_basic_set_sample_vec(bset);
7063 empty = sample->size == 0;
7064 isl_vec_free(bmap->sample);
7065 bmap->sample = sample;
7067 ISL_F_SET(bmap, ISL_BASIC_MAP_EMPTY);
7072 int isl_basic_map_plain_is_empty(__isl_keep isl_basic_map *bmap)
7076 return ISL_F_ISSET(bmap, ISL_BASIC_MAP_EMPTY);
7079 int isl_basic_map_fast_is_empty(__isl_keep isl_basic_map *bmap)
7081 return isl_basic_map_plain_is_empty(bmap);
7084 int isl_basic_set_plain_is_empty(__isl_keep isl_basic_set *bset)
7088 return ISL_F_ISSET(bset, ISL_BASIC_SET_EMPTY);
7091 int isl_basic_set_fast_is_empty(__isl_keep isl_basic_set *bset)
7093 return isl_basic_set_plain_is_empty(bset);
7096 int isl_basic_set_is_empty(struct isl_basic_set *bset)
7098 return isl_basic_map_is_empty((struct isl_basic_map *)bset);
7101 struct isl_map *isl_basic_map_union(
7102 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
7104 struct isl_map *map;
7105 if (!bmap1 || !bmap2)
7108 isl_assert(bmap1->ctx, isl_space_is_equal(bmap1->dim, bmap2->dim), goto error);
7110 map = isl_map_alloc_space(isl_space_copy(bmap1->dim), 2, 0);
7113 map = isl_map_add_basic_map(map, bmap1);
7114 map = isl_map_add_basic_map(map, bmap2);
7117 isl_basic_map_free(bmap1);
7118 isl_basic_map_free(bmap2);
7122 struct isl_set *isl_basic_set_union(
7123 struct isl_basic_set *bset1, struct isl_basic_set *bset2)
7125 return (struct isl_set *)isl_basic_map_union(
7126 (struct isl_basic_map *)bset1,
7127 (struct isl_basic_map *)bset2);
7130 /* Order divs such that any div only depends on previous divs */
7131 struct isl_basic_map *isl_basic_map_order_divs(struct isl_basic_map *bmap)
7139 off = isl_space_dim(bmap->dim, isl_dim_all);
7141 for (i = 0; i < bmap->n_div; ++i) {
7143 if (isl_int_is_zero(bmap->div[i][0]))
7145 pos = isl_seq_first_non_zero(bmap->div[i]+1+1+off+i,
7149 isl_basic_map_swap_div(bmap, i, i + pos);
7155 struct isl_basic_set *isl_basic_set_order_divs(struct isl_basic_set *bset)
7157 return (struct isl_basic_set *)
7158 isl_basic_map_order_divs((struct isl_basic_map *)bset);
7161 __isl_give isl_map *isl_map_order_divs(__isl_take isl_map *map)
7168 for (i = 0; i < map->n; ++i) {
7169 map->p[i] = isl_basic_map_order_divs(map->p[i]);
7180 /* Apply the expansion computed by isl_merge_divs.
7181 * The expansion itself is given by "exp" while the resulting
7182 * list of divs is given by "div".
7184 __isl_give isl_basic_set *isl_basic_set_expand_divs(
7185 __isl_take isl_basic_set *bset, __isl_take isl_mat *div, int *exp)
7190 bset = isl_basic_set_cow(bset);
7194 if (div->n_row < bset->n_div)
7195 isl_die(isl_mat_get_ctx(div), isl_error_invalid,
7196 "not an expansion", goto error);
7198 bset = isl_basic_map_extend_space(bset, isl_space_copy(bset->dim),
7199 div->n_row - bset->n_div, 0,
7200 2 * (div->n_row - bset->n_div));
7202 n_div = bset->n_div;
7203 for (i = n_div; i < div->n_row; ++i)
7204 if (isl_basic_set_alloc_div(bset) < 0)
7208 for (i = div->n_row - 1; i >= 0; --i) {
7209 if (j >= 0 && exp[j] == i) {
7211 isl_basic_map_swap_div(bset, i, j);
7214 isl_seq_cpy(bset->div[i], div->row[i], div->n_col);
7215 if (isl_basic_map_add_div_constraints(bset, i) < 0)
7223 isl_basic_set_free(bset);
7228 /* Look for a div in dst that corresponds to the div "div" in src.
7229 * The divs before "div" in src and dst are assumed to be the same.
7231 * Returns -1 if no corresponding div was found and the position
7232 * of the corresponding div in dst otherwise.
7234 static int find_div(struct isl_basic_map *dst,
7235 struct isl_basic_map *src, unsigned div)
7239 unsigned total = isl_space_dim(src->dim, isl_dim_all);
7241 isl_assert(dst->ctx, div <= dst->n_div, return -1);
7242 for (i = div; i < dst->n_div; ++i)
7243 if (isl_seq_eq(dst->div[i], src->div[div], 1+1+total+div) &&
7244 isl_seq_first_non_zero(dst->div[i]+1+1+total+div,
7245 dst->n_div - div) == -1)
7250 struct isl_basic_map *isl_basic_map_align_divs(
7251 struct isl_basic_map *dst, struct isl_basic_map *src)
7254 unsigned total = isl_space_dim(src->dim, isl_dim_all);
7259 if (src->n_div == 0)
7262 for (i = 0; i < src->n_div; ++i)
7263 isl_assert(src->ctx, !isl_int_is_zero(src->div[i][0]), goto error);
7265 src = isl_basic_map_order_divs(src);
7266 dst = isl_basic_map_cow(dst);
7267 dst = isl_basic_map_extend_space(dst, isl_space_copy(dst->dim),
7268 src->n_div, 0, 2 * src->n_div);
7271 for (i = 0; i < src->n_div; ++i) {
7272 int j = find_div(dst, src, i);
7274 j = isl_basic_map_alloc_div(dst);
7277 isl_seq_cpy(dst->div[j], src->div[i], 1+1+total+i);
7278 isl_seq_clr(dst->div[j]+1+1+total+i, dst->n_div - i);
7279 if (isl_basic_map_add_div_constraints(dst, j) < 0)
7283 isl_basic_map_swap_div(dst, i, j);
7287 isl_basic_map_free(dst);
7291 struct isl_basic_set *isl_basic_set_align_divs(
7292 struct isl_basic_set *dst, struct isl_basic_set *src)
7294 return (struct isl_basic_set *)isl_basic_map_align_divs(
7295 (struct isl_basic_map *)dst, (struct isl_basic_map *)src);
7298 struct isl_map *isl_map_align_divs(struct isl_map *map)
7306 map = isl_map_compute_divs(map);
7307 map = isl_map_cow(map);
7311 for (i = 1; i < map->n; ++i)
7312 map->p[0] = isl_basic_map_align_divs(map->p[0], map->p[i]);
7313 for (i = 1; i < map->n; ++i)
7314 map->p[i] = isl_basic_map_align_divs(map->p[i], map->p[0]);
7316 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
7320 struct isl_set *isl_set_align_divs(struct isl_set *set)
7322 return (struct isl_set *)isl_map_align_divs((struct isl_map *)set);
7325 static __isl_give isl_set *set_apply( __isl_take isl_set *set,
7326 __isl_take isl_map *map)
7330 isl_assert(set->ctx, isl_map_compatible_domain(map, set), goto error);
7331 map = isl_map_intersect_domain(map, set);
7332 set = isl_map_range(map);
7340 __isl_give isl_set *isl_set_apply( __isl_take isl_set *set,
7341 __isl_take isl_map *map)
7343 return isl_map_align_params_map_map_and(set, map, &set_apply);
7346 /* There is no need to cow as removing empty parts doesn't change
7347 * the meaning of the set.
7349 struct isl_map *isl_map_remove_empty_parts(struct isl_map *map)
7356 for (i = map->n - 1; i >= 0; --i)
7357 remove_if_empty(map, i);
7362 struct isl_set *isl_set_remove_empty_parts(struct isl_set *set)
7364 return (struct isl_set *)
7365 isl_map_remove_empty_parts((struct isl_map *)set);
7368 struct isl_basic_map *isl_map_copy_basic_map(struct isl_map *map)
7370 struct isl_basic_map *bmap;
7371 if (!map || map->n == 0)
7373 bmap = map->p[map->n-1];
7374 isl_assert(map->ctx, ISL_F_ISSET(bmap, ISL_BASIC_SET_FINAL), return NULL);
7375 return isl_basic_map_copy(bmap);
7378 struct isl_basic_set *isl_set_copy_basic_set(struct isl_set *set)
7380 return (struct isl_basic_set *)
7381 isl_map_copy_basic_map((struct isl_map *)set);
7384 __isl_give isl_map *isl_map_drop_basic_map(__isl_take isl_map *map,
7385 __isl_keep isl_basic_map *bmap)
7391 for (i = map->n-1; i >= 0; --i) {
7392 if (map->p[i] != bmap)
7394 map = isl_map_cow(map);
7397 isl_basic_map_free(map->p[i]);
7398 if (i != map->n-1) {
7399 ISL_F_CLR(map, ISL_SET_NORMALIZED);
7400 map->p[i] = map->p[map->n-1];
7411 struct isl_set *isl_set_drop_basic_set(struct isl_set *set,
7412 struct isl_basic_set *bset)
7414 return (struct isl_set *)isl_map_drop_basic_map((struct isl_map *)set,
7415 (struct isl_basic_map *)bset);
7418 /* Given two basic sets bset1 and bset2, compute the maximal difference
7419 * between the values of dimension pos in bset1 and those in bset2
7420 * for any common value of the parameters and dimensions preceding pos.
7422 static enum isl_lp_result basic_set_maximal_difference_at(
7423 __isl_keep isl_basic_set *bset1, __isl_keep isl_basic_set *bset2,
7424 int pos, isl_int *opt)
7427 struct isl_basic_map *bmap1 = NULL;
7428 struct isl_basic_map *bmap2 = NULL;
7429 struct isl_ctx *ctx;
7430 struct isl_vec *obj;
7433 unsigned dim1, dim2;
7434 enum isl_lp_result res;
7436 if (!bset1 || !bset2)
7437 return isl_lp_error;
7439 nparam = isl_basic_set_n_param(bset1);
7440 dim1 = isl_basic_set_n_dim(bset1);
7441 dim2 = isl_basic_set_n_dim(bset2);
7442 dims = isl_space_alloc(bset1->ctx, nparam, pos, dim1 - pos);
7443 bmap1 = isl_basic_map_from_basic_set(isl_basic_set_copy(bset1), dims);
7444 dims = isl_space_alloc(bset2->ctx, nparam, pos, dim2 - pos);
7445 bmap2 = isl_basic_map_from_basic_set(isl_basic_set_copy(bset2), dims);
7446 if (!bmap1 || !bmap2)
7448 bmap1 = isl_basic_map_cow(bmap1);
7449 bmap1 = isl_basic_map_extend(bmap1, nparam,
7450 pos, (dim1 - pos) + (dim2 - pos),
7451 bmap2->n_div, bmap2->n_eq, bmap2->n_ineq);
7452 bmap1 = add_constraints(bmap1, bmap2, 0, dim1 - pos);
7455 total = isl_basic_map_total_dim(bmap1);
7457 obj = isl_vec_alloc(ctx, 1 + total);
7458 isl_seq_clr(obj->block.data, 1 + total);
7459 isl_int_set_si(obj->block.data[1+nparam+pos], 1);
7460 isl_int_set_si(obj->block.data[1+nparam+pos+(dim1-pos)], -1);
7463 res = isl_basic_map_solve_lp(bmap1, 1, obj->block.data, ctx->one,
7465 isl_basic_map_free(bmap1);
7469 isl_basic_map_free(bmap1);
7470 isl_basic_map_free(bmap2);
7471 return isl_lp_error;
7474 /* Given two _disjoint_ basic sets bset1 and bset2, check whether
7475 * for any common value of the parameters and dimensions preceding pos
7476 * in both basic sets, the values of dimension pos in bset1 are
7477 * smaller or larger than those in bset2.
7480 * 1 if bset1 follows bset2
7481 * -1 if bset1 precedes bset2
7482 * 0 if bset1 and bset2 are incomparable
7483 * -2 if some error occurred.
7485 int isl_basic_set_compare_at(struct isl_basic_set *bset1,
7486 struct isl_basic_set *bset2, int pos)
7489 enum isl_lp_result res;
7494 res = basic_set_maximal_difference_at(bset1, bset2, pos, &opt);
7496 if (res == isl_lp_empty)
7498 else if ((res == isl_lp_ok && isl_int_is_pos(opt)) ||
7499 res == isl_lp_unbounded)
7501 else if (res == isl_lp_ok && isl_int_is_neg(opt))
7510 /* Given two basic sets bset1 and bset2, check whether
7511 * for any common value of the parameters and dimensions preceding pos
7512 * there is a value of dimension pos in bset1 that is larger
7513 * than a value of the same dimension in bset2.
7516 * 1 if there exists such a pair
7517 * 0 if there is no such pair, but there is a pair of equal values
7519 * -2 if some error occurred.
7521 int isl_basic_set_follows_at(__isl_keep isl_basic_set *bset1,
7522 __isl_keep isl_basic_set *bset2, int pos)
7525 enum isl_lp_result res;
7530 res = basic_set_maximal_difference_at(bset1, bset2, pos, &opt);
7532 if (res == isl_lp_empty)
7534 else if ((res == isl_lp_ok && isl_int_is_pos(opt)) ||
7535 res == isl_lp_unbounded)
7537 else if (res == isl_lp_ok && isl_int_is_neg(opt))
7539 else if (res == isl_lp_ok)
7548 /* Given two sets set1 and set2, check whether
7549 * for any common value of the parameters and dimensions preceding pos
7550 * there is a value of dimension pos in set1 that is larger
7551 * than a value of the same dimension in set2.
7554 * 1 if there exists such a pair
7555 * 0 if there is no such pair, but there is a pair of equal values
7557 * -2 if some error occurred.
7559 int isl_set_follows_at(__isl_keep isl_set *set1,
7560 __isl_keep isl_set *set2, int pos)
7568 for (i = 0; i < set1->n; ++i)
7569 for (j = 0; j < set2->n; ++j) {
7571 f = isl_basic_set_follows_at(set1->p[i], set2->p[j], pos);
7572 if (f == 1 || f == -2)
7581 static int isl_basic_map_plain_has_fixed_var(__isl_keep isl_basic_map *bmap,
7582 unsigned pos, isl_int *val)
7590 total = isl_basic_map_total_dim(bmap);
7591 for (i = 0, d = total-1; i < bmap->n_eq && d+1 > pos; ++i) {
7592 for (; d+1 > pos; --d)
7593 if (!isl_int_is_zero(bmap->eq[i][1+d]))
7597 if (isl_seq_first_non_zero(bmap->eq[i]+1, d) != -1)
7599 if (isl_seq_first_non_zero(bmap->eq[i]+1+d+1, total-d-1) != -1)
7601 if (!isl_int_is_one(bmap->eq[i][1+d]))
7604 isl_int_neg(*val, bmap->eq[i][0]);
7610 static int isl_map_plain_has_fixed_var(__isl_keep isl_map *map,
7611 unsigned pos, isl_int *val)
7623 return isl_basic_map_plain_has_fixed_var(map->p[0], pos, val);
7626 fixed = isl_basic_map_plain_has_fixed_var(map->p[0], pos, &v);
7627 for (i = 1; fixed == 1 && i < map->n; ++i) {
7628 fixed = isl_basic_map_plain_has_fixed_var(map->p[i], pos, &tmp);
7629 if (fixed == 1 && isl_int_ne(tmp, v))
7633 isl_int_set(*val, v);
7639 static int isl_basic_set_plain_has_fixed_var(__isl_keep isl_basic_set *bset,
7640 unsigned pos, isl_int *val)
7642 return isl_basic_map_plain_has_fixed_var((struct isl_basic_map *)bset,
7646 static int isl_set_plain_has_fixed_var(__isl_keep isl_set *set, unsigned pos,
7649 return isl_map_plain_has_fixed_var((struct isl_map *)set, pos, val);
7652 int isl_basic_map_plain_is_fixed(__isl_keep isl_basic_map *bmap,
7653 enum isl_dim_type type, unsigned pos, isl_int *val)
7655 if (pos >= isl_basic_map_dim(bmap, type))
7657 return isl_basic_map_plain_has_fixed_var(bmap,
7658 isl_basic_map_offset(bmap, type) - 1 + pos, val);
7661 int isl_map_plain_is_fixed(__isl_keep isl_map *map,
7662 enum isl_dim_type type, unsigned pos, isl_int *val)
7664 if (pos >= isl_map_dim(map, type))
7666 return isl_map_plain_has_fixed_var(map,
7667 map_offset(map, type) - 1 + pos, val);
7670 int isl_set_plain_is_fixed(__isl_keep isl_set *set,
7671 enum isl_dim_type type, unsigned pos, isl_int *val)
7673 return isl_map_plain_is_fixed(set, type, pos, val);
7676 int isl_map_fast_is_fixed(__isl_keep isl_map *map,
7677 enum isl_dim_type type, unsigned pos, isl_int *val)
7679 return isl_map_plain_is_fixed(map, type, pos, val);
7682 /* Check if dimension dim has fixed value and if so and if val is not NULL,
7683 * then return this fixed value in *val.
7685 int isl_basic_set_plain_dim_is_fixed(__isl_keep isl_basic_set *bset,
7686 unsigned dim, isl_int *val)
7688 return isl_basic_set_plain_has_fixed_var(bset,
7689 isl_basic_set_n_param(bset) + dim, val);
7692 /* Check if dimension dim has fixed value and if so and if val is not NULL,
7693 * then return this fixed value in *val.
7695 int isl_set_plain_dim_is_fixed(__isl_keep isl_set *set,
7696 unsigned dim, isl_int *val)
7698 return isl_set_plain_has_fixed_var(set, isl_set_n_param(set) + dim, val);
7701 int isl_set_fast_dim_is_fixed(__isl_keep isl_set *set,
7702 unsigned dim, isl_int *val)
7704 return isl_set_plain_dim_is_fixed(set, dim, val);
7707 /* Check if input variable in has fixed value and if so and if val is not NULL,
7708 * then return this fixed value in *val.
7710 int isl_map_plain_input_is_fixed(__isl_keep isl_map *map,
7711 unsigned in, isl_int *val)
7713 return isl_map_plain_has_fixed_var(map, isl_map_n_param(map) + in, val);
7716 /* Check if dimension dim has an (obvious) fixed lower bound and if so
7717 * and if val is not NULL, then return this lower bound in *val.
7719 int isl_basic_set_plain_dim_has_fixed_lower_bound(
7720 __isl_keep isl_basic_set *bset, unsigned dim, isl_int *val)
7722 int i, i_eq = -1, i_ineq = -1;
7729 total = isl_basic_set_total_dim(bset);
7730 nparam = isl_basic_set_n_param(bset);
7731 for (i = 0; i < bset->n_eq; ++i) {
7732 if (isl_int_is_zero(bset->eq[i][1+nparam+dim]))
7738 for (i = 0; i < bset->n_ineq; ++i) {
7739 if (!isl_int_is_pos(bset->ineq[i][1+nparam+dim]))
7741 if (i_eq != -1 || i_ineq != -1)
7745 if (i_eq == -1 && i_ineq == -1)
7747 c = i_eq != -1 ? bset->eq[i_eq] : bset->ineq[i_ineq];
7748 /* The coefficient should always be one due to normalization. */
7749 if (!isl_int_is_one(c[1+nparam+dim]))
7751 if (isl_seq_first_non_zero(c+1, nparam+dim) != -1)
7753 if (isl_seq_first_non_zero(c+1+nparam+dim+1,
7754 total - nparam - dim - 1) != -1)
7757 isl_int_neg(*val, c[0]);
7761 int isl_set_plain_dim_has_fixed_lower_bound(__isl_keep isl_set *set,
7762 unsigned dim, isl_int *val)
7774 return isl_basic_set_plain_dim_has_fixed_lower_bound(set->p[0],
7778 fixed = isl_basic_set_plain_dim_has_fixed_lower_bound(set->p[0],
7780 for (i = 1; fixed == 1 && i < set->n; ++i) {
7781 fixed = isl_basic_set_plain_dim_has_fixed_lower_bound(set->p[i],
7783 if (fixed == 1 && isl_int_ne(tmp, v))
7787 isl_int_set(*val, v);
7798 /* uset_gist depends on constraints without existentially quantified
7799 * variables sorting first.
7801 static int qsort_constraint_cmp(const void *p1, const void *p2)
7803 const struct constraint *c1 = (const struct constraint *)p1;
7804 const struct constraint *c2 = (const struct constraint *)p2;
7806 unsigned size = isl_min(c1->size, c2->size);
7808 l1 = isl_seq_last_non_zero(c1->c, size);
7809 l2 = isl_seq_last_non_zero(c2->c, size);
7814 return isl_seq_cmp(c1->c, c2->c, size);
7817 static struct isl_basic_map *isl_basic_map_sort_constraints(
7818 struct isl_basic_map *bmap)
7821 struct constraint *c;
7826 total = isl_basic_map_total_dim(bmap);
7827 c = isl_alloc_array(bmap->ctx, struct constraint, bmap->n_ineq);
7830 for (i = 0; i < bmap->n_ineq; ++i) {
7832 c[i].c = bmap->ineq[i];
7834 qsort(c, bmap->n_ineq, sizeof(struct constraint), qsort_constraint_cmp);
7835 for (i = 0; i < bmap->n_ineq; ++i)
7836 bmap->ineq[i] = c[i].c;
7840 isl_basic_map_free(bmap);
7844 __isl_give isl_basic_set *isl_basic_set_sort_constraints(
7845 __isl_take isl_basic_set *bset)
7847 return (struct isl_basic_set *)isl_basic_map_sort_constraints(
7848 (struct isl_basic_map *)bset);
7851 struct isl_basic_map *isl_basic_map_normalize(struct isl_basic_map *bmap)
7855 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_NORMALIZED))
7857 bmap = isl_basic_map_remove_redundancies(bmap);
7858 bmap = isl_basic_map_sort_constraints(bmap);
7859 ISL_F_SET(bmap, ISL_BASIC_MAP_NORMALIZED);
7863 struct isl_basic_set *isl_basic_set_normalize(struct isl_basic_set *bset)
7865 return (struct isl_basic_set *)isl_basic_map_normalize(
7866 (struct isl_basic_map *)bset);
7869 int isl_basic_map_plain_cmp(const __isl_keep isl_basic_map *bmap1,
7870 const __isl_keep isl_basic_map *bmap2)
7877 if (ISL_F_ISSET(bmap1, ISL_BASIC_MAP_RATIONAL) !=
7878 ISL_F_ISSET(bmap2, ISL_BASIC_MAP_RATIONAL))
7879 return ISL_F_ISSET(bmap1, ISL_BASIC_MAP_RATIONAL) ? -1 : 1;
7880 if (isl_basic_map_n_param(bmap1) != isl_basic_map_n_param(bmap2))
7881 return isl_basic_map_n_param(bmap1) - isl_basic_map_n_param(bmap2);
7882 if (isl_basic_map_n_in(bmap1) != isl_basic_map_n_in(bmap2))
7883 return isl_basic_map_n_out(bmap1) - isl_basic_map_n_out(bmap2);
7884 if (isl_basic_map_n_out(bmap1) != isl_basic_map_n_out(bmap2))
7885 return isl_basic_map_n_out(bmap1) - isl_basic_map_n_out(bmap2);
7886 if (ISL_F_ISSET(bmap1, ISL_BASIC_MAP_EMPTY) &&
7887 ISL_F_ISSET(bmap2, ISL_BASIC_MAP_EMPTY))
7889 if (ISL_F_ISSET(bmap1, ISL_BASIC_MAP_EMPTY))
7891 if (ISL_F_ISSET(bmap2, ISL_BASIC_MAP_EMPTY))
7893 if (bmap1->n_eq != bmap2->n_eq)
7894 return bmap1->n_eq - bmap2->n_eq;
7895 if (bmap1->n_ineq != bmap2->n_ineq)
7896 return bmap1->n_ineq - bmap2->n_ineq;
7897 if (bmap1->n_div != bmap2->n_div)
7898 return bmap1->n_div - bmap2->n_div;
7899 total = isl_basic_map_total_dim(bmap1);
7900 for (i = 0; i < bmap1->n_eq; ++i) {
7901 cmp = isl_seq_cmp(bmap1->eq[i], bmap2->eq[i], 1+total);
7905 for (i = 0; i < bmap1->n_ineq; ++i) {
7906 cmp = isl_seq_cmp(bmap1->ineq[i], bmap2->ineq[i], 1+total);
7910 for (i = 0; i < bmap1->n_div; ++i) {
7911 cmp = isl_seq_cmp(bmap1->div[i], bmap2->div[i], 1+1+total);
7918 int isl_basic_set_plain_cmp(const __isl_keep isl_basic_set *bset1,
7919 const __isl_keep isl_basic_set *bset2)
7921 return isl_basic_map_plain_cmp(bset1, bset2);
7924 int isl_set_plain_cmp(const __isl_keep isl_set *set1,
7925 const __isl_keep isl_set *set2)
7931 if (set1->n != set2->n)
7932 return set1->n - set2->n;
7934 for (i = 0; i < set1->n; ++i) {
7935 cmp = isl_basic_set_plain_cmp(set1->p[i], set2->p[i]);
7943 int isl_basic_map_plain_is_equal(__isl_keep isl_basic_map *bmap1,
7944 __isl_keep isl_basic_map *bmap2)
7946 return isl_basic_map_plain_cmp(bmap1, bmap2) == 0;
7949 int isl_basic_set_plain_is_equal(__isl_keep isl_basic_set *bset1,
7950 __isl_keep isl_basic_set *bset2)
7952 return isl_basic_map_plain_is_equal((isl_basic_map *)bset1,
7953 (isl_basic_map *)bset2);
7956 static int qsort_bmap_cmp(const void *p1, const void *p2)
7958 const struct isl_basic_map *bmap1 = *(const struct isl_basic_map **)p1;
7959 const struct isl_basic_map *bmap2 = *(const struct isl_basic_map **)p2;
7961 return isl_basic_map_plain_cmp(bmap1, bmap2);
7964 /* We normalize in place, but if anything goes wrong we need
7965 * to return NULL, so we need to make sure we don't change the
7966 * meaning of any possible other copies of map.
7968 struct isl_map *isl_map_normalize(struct isl_map *map)
7971 struct isl_basic_map *bmap;
7975 if (ISL_F_ISSET(map, ISL_MAP_NORMALIZED))
7977 for (i = 0; i < map->n; ++i) {
7978 bmap = isl_basic_map_normalize(isl_basic_map_copy(map->p[i]));
7981 isl_basic_map_free(map->p[i]);
7984 qsort(map->p, map->n, sizeof(struct isl_basic_map *), qsort_bmap_cmp);
7985 ISL_F_SET(map, ISL_MAP_NORMALIZED);
7986 map = isl_map_remove_empty_parts(map);
7989 for (i = map->n - 1; i >= 1; --i) {
7990 if (!isl_basic_map_plain_is_equal(map->p[i-1], map->p[i]))
7992 isl_basic_map_free(map->p[i-1]);
7993 for (j = i; j < map->n; ++j)
7994 map->p[j-1] = map->p[j];
8004 struct isl_set *isl_set_normalize(struct isl_set *set)
8006 return (struct isl_set *)isl_map_normalize((struct isl_map *)set);
8009 int isl_map_plain_is_equal(__isl_keep isl_map *map1, __isl_keep isl_map *map2)
8019 if (!isl_space_is_equal(map1->dim, map2->dim))
8022 map1 = isl_map_copy(map1);
8023 map2 = isl_map_copy(map2);
8024 map1 = isl_map_normalize(map1);
8025 map2 = isl_map_normalize(map2);
8028 equal = map1->n == map2->n;
8029 for (i = 0; equal && i < map1->n; ++i) {
8030 equal = isl_basic_map_plain_is_equal(map1->p[i], map2->p[i]);
8043 int isl_map_fast_is_equal(__isl_keep isl_map *map1, __isl_keep isl_map *map2)
8045 return isl_map_plain_is_equal(map1, map2);
8048 int isl_set_plain_is_equal(__isl_keep isl_set *set1, __isl_keep isl_set *set2)
8050 return isl_map_plain_is_equal((struct isl_map *)set1,
8051 (struct isl_map *)set2);
8054 int isl_set_fast_is_equal(__isl_keep isl_set *set1, __isl_keep isl_set *set2)
8056 return isl_set_plain_is_equal(set1, set2);
8059 /* Return an interval that ranges from min to max (inclusive)
8061 struct isl_basic_set *isl_basic_set_interval(struct isl_ctx *ctx,
8062 isl_int min, isl_int max)
8065 struct isl_basic_set *bset = NULL;
8067 bset = isl_basic_set_alloc(ctx, 0, 1, 0, 0, 2);
8071 k = isl_basic_set_alloc_inequality(bset);
8074 isl_int_set_si(bset->ineq[k][1], 1);
8075 isl_int_neg(bset->ineq[k][0], min);
8077 k = isl_basic_set_alloc_inequality(bset);
8080 isl_int_set_si(bset->ineq[k][1], -1);
8081 isl_int_set(bset->ineq[k][0], max);
8085 isl_basic_set_free(bset);
8089 /* Return the Cartesian product of the basic sets in list (in the given order).
8091 __isl_give isl_basic_set *isl_basic_set_list_product(
8092 __isl_take struct isl_basic_set_list *list)
8100 struct isl_basic_set *product = NULL;
8104 isl_assert(list->ctx, list->n > 0, goto error);
8105 isl_assert(list->ctx, list->p[0], goto error);
8106 nparam = isl_basic_set_n_param(list->p[0]);
8107 dim = isl_basic_set_n_dim(list->p[0]);
8108 extra = list->p[0]->n_div;
8109 n_eq = list->p[0]->n_eq;
8110 n_ineq = list->p[0]->n_ineq;
8111 for (i = 1; i < list->n; ++i) {
8112 isl_assert(list->ctx, list->p[i], goto error);
8113 isl_assert(list->ctx,
8114 nparam == isl_basic_set_n_param(list->p[i]), goto error);
8115 dim += isl_basic_set_n_dim(list->p[i]);
8116 extra += list->p[i]->n_div;
8117 n_eq += list->p[i]->n_eq;
8118 n_ineq += list->p[i]->n_ineq;
8120 product = isl_basic_set_alloc(list->ctx, nparam, dim, extra,
8125 for (i = 0; i < list->n; ++i) {
8126 isl_basic_set_add_constraints(product,
8127 isl_basic_set_copy(list->p[i]), dim);
8128 dim += isl_basic_set_n_dim(list->p[i]);
8130 isl_basic_set_list_free(list);
8133 isl_basic_set_free(product);
8134 isl_basic_set_list_free(list);
8138 struct isl_basic_map *isl_basic_map_product(
8139 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
8141 isl_space *dim_result = NULL;
8142 struct isl_basic_map *bmap;
8143 unsigned in1, in2, out1, out2, nparam, total, pos;
8144 struct isl_dim_map *dim_map1, *dim_map2;
8146 if (!bmap1 || !bmap2)
8149 isl_assert(bmap1->ctx, isl_space_match(bmap1->dim, isl_dim_param,
8150 bmap2->dim, isl_dim_param), goto error);
8151 dim_result = isl_space_product(isl_space_copy(bmap1->dim),
8152 isl_space_copy(bmap2->dim));
8154 in1 = isl_basic_map_n_in(bmap1);
8155 in2 = isl_basic_map_n_in(bmap2);
8156 out1 = isl_basic_map_n_out(bmap1);
8157 out2 = isl_basic_map_n_out(bmap2);
8158 nparam = isl_basic_map_n_param(bmap1);
8160 total = nparam + in1 + in2 + out1 + out2 + bmap1->n_div + bmap2->n_div;
8161 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
8162 dim_map2 = isl_dim_map_alloc(bmap1->ctx, total);
8163 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
8164 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos = 0);
8165 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
8166 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos += in1);
8167 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += in2);
8168 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos += out1);
8169 isl_dim_map_div(dim_map1, bmap1, pos += out2);
8170 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
8172 bmap = isl_basic_map_alloc_space(dim_result,
8173 bmap1->n_div + bmap2->n_div,
8174 bmap1->n_eq + bmap2->n_eq,
8175 bmap1->n_ineq + bmap2->n_ineq);
8176 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap1, dim_map1);
8177 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap2, dim_map2);
8178 bmap = isl_basic_map_simplify(bmap);
8179 return isl_basic_map_finalize(bmap);
8181 isl_basic_map_free(bmap1);
8182 isl_basic_map_free(bmap2);
8186 __isl_give isl_basic_map *isl_basic_map_flat_product(
8187 __isl_take isl_basic_map *bmap1, __isl_take isl_basic_map *bmap2)
8189 isl_basic_map *prod;
8191 prod = isl_basic_map_product(bmap1, bmap2);
8192 prod = isl_basic_map_flatten(prod);
8196 __isl_give isl_basic_set *isl_basic_set_flat_product(
8197 __isl_take isl_basic_set *bset1, __isl_take isl_basic_set *bset2)
8199 return isl_basic_map_flat_range_product(bset1, bset2);
8202 __isl_give isl_basic_map *isl_basic_map_domain_product(
8203 __isl_take isl_basic_map *bmap1, __isl_take isl_basic_map *bmap2)
8205 isl_space *space_result = NULL;
8206 isl_basic_map *bmap;
8207 unsigned in1, in2, out, nparam, total, pos;
8208 struct isl_dim_map *dim_map1, *dim_map2;
8210 if (!bmap1 || !bmap2)
8213 space_result = isl_space_domain_product(isl_space_copy(bmap1->dim),
8214 isl_space_copy(bmap2->dim));
8216 in1 = isl_basic_map_dim(bmap1, isl_dim_in);
8217 in2 = isl_basic_map_dim(bmap2, isl_dim_in);
8218 out = isl_basic_map_dim(bmap1, isl_dim_out);
8219 nparam = isl_basic_map_dim(bmap1, isl_dim_param);
8221 total = nparam + in1 + in2 + out + bmap1->n_div + bmap2->n_div;
8222 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
8223 dim_map2 = isl_dim_map_alloc(bmap1->ctx, total);
8224 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
8225 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos = 0);
8226 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
8227 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos += in1);
8228 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += in2);
8229 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos);
8230 isl_dim_map_div(dim_map1, bmap1, pos += out);
8231 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
8233 bmap = isl_basic_map_alloc_space(space_result,
8234 bmap1->n_div + bmap2->n_div,
8235 bmap1->n_eq + bmap2->n_eq,
8236 bmap1->n_ineq + bmap2->n_ineq);
8237 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap1, dim_map1);
8238 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap2, dim_map2);
8239 bmap = isl_basic_map_simplify(bmap);
8240 return isl_basic_map_finalize(bmap);
8242 isl_basic_map_free(bmap1);
8243 isl_basic_map_free(bmap2);
8247 __isl_give isl_basic_map *isl_basic_map_range_product(
8248 __isl_take isl_basic_map *bmap1, __isl_take isl_basic_map *bmap2)
8250 isl_space *dim_result = NULL;
8251 isl_basic_map *bmap;
8252 unsigned in, out1, out2, nparam, total, pos;
8253 struct isl_dim_map *dim_map1, *dim_map2;
8255 if (!bmap1 || !bmap2)
8258 dim_result = isl_space_range_product(isl_space_copy(bmap1->dim),
8259 isl_space_copy(bmap2->dim));
8261 in = isl_basic_map_dim(bmap1, isl_dim_in);
8262 out1 = isl_basic_map_n_out(bmap1);
8263 out2 = isl_basic_map_n_out(bmap2);
8264 nparam = isl_basic_map_n_param(bmap1);
8266 total = nparam + in + out1 + out2 + bmap1->n_div + bmap2->n_div;
8267 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
8268 dim_map2 = isl_dim_map_alloc(bmap1->ctx, total);
8269 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
8270 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos = 0);
8271 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
8272 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos);
8273 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += in);
8274 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos += out1);
8275 isl_dim_map_div(dim_map1, bmap1, pos += out2);
8276 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
8278 bmap = isl_basic_map_alloc_space(dim_result,
8279 bmap1->n_div + bmap2->n_div,
8280 bmap1->n_eq + bmap2->n_eq,
8281 bmap1->n_ineq + bmap2->n_ineq);
8282 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap1, dim_map1);
8283 bmap = isl_basic_map_add_constraints_dim_map(bmap, bmap2, dim_map2);
8284 bmap = isl_basic_map_simplify(bmap);
8285 return isl_basic_map_finalize(bmap);
8287 isl_basic_map_free(bmap1);
8288 isl_basic_map_free(bmap2);
8292 __isl_give isl_basic_map *isl_basic_map_flat_range_product(
8293 __isl_take isl_basic_map *bmap1, __isl_take isl_basic_map *bmap2)
8295 isl_basic_map *prod;
8297 prod = isl_basic_map_range_product(bmap1, bmap2);
8298 prod = isl_basic_map_flatten_range(prod);
8302 static __isl_give isl_map *map_product(__isl_take isl_map *map1,
8303 __isl_take isl_map *map2,
8304 __isl_give isl_space *(*dim_product)(__isl_take isl_space *left,
8305 __isl_take isl_space *right),
8306 __isl_give isl_basic_map *(*basic_map_product)(
8307 __isl_take isl_basic_map *left, __isl_take isl_basic_map *right))
8310 struct isl_map *result;
8316 isl_assert(map1->ctx, isl_space_match(map1->dim, isl_dim_param,
8317 map2->dim, isl_dim_param), goto error);
8319 if (ISL_F_ISSET(map1, ISL_MAP_DISJOINT) &&
8320 ISL_F_ISSET(map2, ISL_MAP_DISJOINT))
8321 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
8323 result = isl_map_alloc_space(dim_product(isl_space_copy(map1->dim),
8324 isl_space_copy(map2->dim)),
8325 map1->n * map2->n, flags);
8328 for (i = 0; i < map1->n; ++i)
8329 for (j = 0; j < map2->n; ++j) {
8330 struct isl_basic_map *part;
8331 part = basic_map_product(isl_basic_map_copy(map1->p[i]),
8332 isl_basic_map_copy(map2->p[j]));
8333 if (isl_basic_map_is_empty(part))
8334 isl_basic_map_free(part);
8336 result = isl_map_add_basic_map(result, part);
8349 /* Given two maps A -> B and C -> D, construct a map [A -> C] -> [B -> D]
8351 static __isl_give isl_map *map_product_aligned(__isl_take isl_map *map1,
8352 __isl_take isl_map *map2)
8354 return map_product(map1, map2, &isl_space_product, &isl_basic_map_product);
8357 __isl_give isl_map *isl_map_product(__isl_take isl_map *map1,
8358 __isl_take isl_map *map2)
8360 return isl_map_align_params_map_map_and(map1, map2, &map_product_aligned);
8363 /* Given two maps A -> B and C -> D, construct a map (A, C) -> (B, D)
8365 __isl_give isl_map *isl_map_flat_product(__isl_take isl_map *map1,
8366 __isl_take isl_map *map2)
8370 prod = isl_map_product(map1, map2);
8371 prod = isl_map_flatten(prod);
8375 /* Given two set A and B, construct its Cartesian product A x B.
8377 struct isl_set *isl_set_product(struct isl_set *set1, struct isl_set *set2)
8379 return isl_map_range_product(set1, set2);
8382 __isl_give isl_set *isl_set_flat_product(__isl_take isl_set *set1,
8383 __isl_take isl_set *set2)
8385 return isl_map_flat_range_product(set1, set2);
8388 /* Given two maps A -> B and C -> D, construct a map [A -> C] -> (B * D)
8390 static __isl_give isl_map *map_domain_product_aligned(__isl_take isl_map *map1,
8391 __isl_take isl_map *map2)
8393 return map_product(map1, map2, &isl_space_domain_product,
8394 &isl_basic_map_domain_product);
8397 /* Given two maps A -> B and C -> D, construct a map (A * C) -> [B -> D]
8399 static __isl_give isl_map *map_range_product_aligned(__isl_take isl_map *map1,
8400 __isl_take isl_map *map2)
8402 return map_product(map1, map2, &isl_space_range_product,
8403 &isl_basic_map_range_product);
8406 __isl_give isl_map *isl_map_domain_product(__isl_take isl_map *map1,
8407 __isl_take isl_map *map2)
8409 return isl_map_align_params_map_map_and(map1, map2,
8410 &map_domain_product_aligned);
8413 __isl_give isl_map *isl_map_range_product(__isl_take isl_map *map1,
8414 __isl_take isl_map *map2)
8416 return isl_map_align_params_map_map_and(map1, map2,
8417 &map_range_product_aligned);
8420 /* Given two maps A -> B and C -> D, construct a map (A, C) -> (B * D)
8422 __isl_give isl_map *isl_map_flat_domain_product(__isl_take isl_map *map1,
8423 __isl_take isl_map *map2)
8427 prod = isl_map_domain_product(map1, map2);
8428 prod = isl_map_flatten_domain(prod);
8432 /* Given two maps A -> B and C -> D, construct a map (A * C) -> (B, D)
8434 __isl_give isl_map *isl_map_flat_range_product(__isl_take isl_map *map1,
8435 __isl_take isl_map *map2)
8439 prod = isl_map_range_product(map1, map2);
8440 prod = isl_map_flatten_range(prod);
8444 uint32_t isl_basic_map_get_hash(__isl_keep isl_basic_map *bmap)
8447 uint32_t hash = isl_hash_init();
8452 bmap = isl_basic_map_copy(bmap);
8453 bmap = isl_basic_map_normalize(bmap);
8456 total = isl_basic_map_total_dim(bmap);
8457 isl_hash_byte(hash, bmap->n_eq & 0xFF);
8458 for (i = 0; i < bmap->n_eq; ++i) {
8460 c_hash = isl_seq_get_hash(bmap->eq[i], 1 + total);
8461 isl_hash_hash(hash, c_hash);
8463 isl_hash_byte(hash, bmap->n_ineq & 0xFF);
8464 for (i = 0; i < bmap->n_ineq; ++i) {
8466 c_hash = isl_seq_get_hash(bmap->ineq[i], 1 + total);
8467 isl_hash_hash(hash, c_hash);
8469 isl_hash_byte(hash, bmap->n_div & 0xFF);
8470 for (i = 0; i < bmap->n_div; ++i) {
8472 if (isl_int_is_zero(bmap->div[i][0]))
8474 isl_hash_byte(hash, i & 0xFF);
8475 c_hash = isl_seq_get_hash(bmap->div[i], 1 + 1 + total);
8476 isl_hash_hash(hash, c_hash);
8478 isl_basic_map_free(bmap);
8482 uint32_t isl_basic_set_get_hash(__isl_keep isl_basic_set *bset)
8484 return isl_basic_map_get_hash((isl_basic_map *)bset);
8487 uint32_t isl_map_get_hash(__isl_keep isl_map *map)
8494 map = isl_map_copy(map);
8495 map = isl_map_normalize(map);
8499 hash = isl_hash_init();
8500 for (i = 0; i < map->n; ++i) {
8502 bmap_hash = isl_basic_map_get_hash(map->p[i]);
8503 isl_hash_hash(hash, bmap_hash);
8511 uint32_t isl_set_get_hash(__isl_keep isl_set *set)
8513 return isl_map_get_hash((isl_map *)set);
8516 /* Check if the value for dimension dim is completely determined
8517 * by the values of the other parameters and variables.
8518 * That is, check if dimension dim is involved in an equality.
8520 int isl_basic_set_dim_is_unique(struct isl_basic_set *bset, unsigned dim)
8527 nparam = isl_basic_set_n_param(bset);
8528 for (i = 0; i < bset->n_eq; ++i)
8529 if (!isl_int_is_zero(bset->eq[i][1 + nparam + dim]))
8534 /* Check if the value for dimension dim is completely determined
8535 * by the values of the other parameters and variables.
8536 * That is, check if dimension dim is involved in an equality
8537 * for each of the subsets.
8539 int isl_set_dim_is_unique(struct isl_set *set, unsigned dim)
8545 for (i = 0; i < set->n; ++i) {
8547 unique = isl_basic_set_dim_is_unique(set->p[i], dim);
8554 int isl_set_n_basic_set(__isl_keep isl_set *set)
8556 return set ? set->n : 0;
8559 int isl_map_foreach_basic_map(__isl_keep isl_map *map,
8560 int (*fn)(__isl_take isl_basic_map *bmap, void *user), void *user)
8567 for (i = 0; i < map->n; ++i)
8568 if (fn(isl_basic_map_copy(map->p[i]), user) < 0)
8574 int isl_set_foreach_basic_set(__isl_keep isl_set *set,
8575 int (*fn)(__isl_take isl_basic_set *bset, void *user), void *user)
8582 for (i = 0; i < set->n; ++i)
8583 if (fn(isl_basic_set_copy(set->p[i]), user) < 0)
8589 __isl_give isl_basic_set *isl_basic_set_lift(__isl_take isl_basic_set *bset)
8596 bset = isl_basic_set_cow(bset);
8600 dim = isl_basic_set_get_space(bset);
8601 dim = isl_space_lift(dim, bset->n_div);
8604 isl_space_free(bset->dim);
8606 bset->extra -= bset->n_div;
8609 bset = isl_basic_set_finalize(bset);
8613 isl_basic_set_free(bset);
8617 __isl_give isl_set *isl_set_lift(__isl_take isl_set *set)
8623 set = isl_set_align_divs(set);
8628 set = isl_set_cow(set);
8632 n_div = set->p[0]->n_div;
8633 dim = isl_set_get_space(set);
8634 dim = isl_space_lift(dim, n_div);
8637 isl_space_free(set->dim);
8640 for (i = 0; i < set->n; ++i) {
8641 set->p[i] = isl_basic_set_lift(set->p[i]);
8652 __isl_give isl_map *isl_set_lifting(__isl_take isl_set *set)
8655 struct isl_basic_map *bmap;
8662 set = isl_set_align_divs(set);
8667 dim = isl_set_get_space(set);
8668 if (set->n == 0 || set->p[0]->n_div == 0) {
8670 return isl_map_identity(isl_space_map_from_set(dim));
8673 n_div = set->p[0]->n_div;
8674 dim = isl_space_map_from_set(dim);
8675 n_param = isl_space_dim(dim, isl_dim_param);
8676 n_set = isl_space_dim(dim, isl_dim_in);
8677 dim = isl_space_extend(dim, n_param, n_set, n_set + n_div);
8678 bmap = isl_basic_map_alloc_space(dim, 0, n_set, 2 * n_div);
8679 for (i = 0; i < n_set; ++i)
8680 bmap = var_equal(bmap, i);
8682 total = n_param + n_set + n_set + n_div;
8683 for (i = 0; i < n_div; ++i) {
8684 k = isl_basic_map_alloc_inequality(bmap);
8687 isl_seq_cpy(bmap->ineq[k], set->p[0]->div[i]+1, 1+n_param);
8688 isl_seq_clr(bmap->ineq[k]+1+n_param, n_set);
8689 isl_seq_cpy(bmap->ineq[k]+1+n_param+n_set,
8690 set->p[0]->div[i]+1+1+n_param, n_set + n_div);
8691 isl_int_neg(bmap->ineq[k][1+n_param+n_set+n_set+i],
8692 set->p[0]->div[i][0]);
8694 l = isl_basic_map_alloc_inequality(bmap);
8697 isl_seq_neg(bmap->ineq[l], bmap->ineq[k], 1 + total);
8698 isl_int_add(bmap->ineq[l][0], bmap->ineq[l][0],
8699 set->p[0]->div[i][0]);
8700 isl_int_sub_ui(bmap->ineq[l][0], bmap->ineq[l][0], 1);
8704 bmap = isl_basic_map_simplify(bmap);
8705 bmap = isl_basic_map_finalize(bmap);
8706 return isl_map_from_basic_map(bmap);
8709 isl_basic_map_free(bmap);
8713 int isl_basic_set_size(__isl_keep isl_basic_set *bset)
8721 dim = isl_basic_set_total_dim(bset);
8722 size += bset->n_eq * (1 + dim);
8723 size += bset->n_ineq * (1 + dim);
8724 size += bset->n_div * (2 + dim);
8729 int isl_set_size(__isl_keep isl_set *set)
8737 for (i = 0; i < set->n; ++i)
8738 size += isl_basic_set_size(set->p[i]);
8743 /* Check if there is any lower bound (if lower == 0) and/or upper
8744 * bound (if upper == 0) on the specified dim.
8746 static int basic_map_dim_is_bounded(__isl_keep isl_basic_map *bmap,
8747 enum isl_dim_type type, unsigned pos, int lower, int upper)
8754 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), return -1);
8756 pos += isl_basic_map_offset(bmap, type);
8758 for (i = 0; i < bmap->n_div; ++i) {
8759 if (isl_int_is_zero(bmap->div[i][0]))
8761 if (!isl_int_is_zero(bmap->div[i][1 + pos]))
8765 for (i = 0; i < bmap->n_eq; ++i)
8766 if (!isl_int_is_zero(bmap->eq[i][pos]))
8769 for (i = 0; i < bmap->n_ineq; ++i) {
8770 int sgn = isl_int_sgn(bmap->ineq[i][pos]);
8777 return lower && upper;
8780 int isl_basic_map_dim_is_bounded(__isl_keep isl_basic_map *bmap,
8781 enum isl_dim_type type, unsigned pos)
8783 return basic_map_dim_is_bounded(bmap, type, pos, 0, 0);
8786 int isl_basic_map_dim_has_lower_bound(__isl_keep isl_basic_map *bmap,
8787 enum isl_dim_type type, unsigned pos)
8789 return basic_map_dim_is_bounded(bmap, type, pos, 0, 1);
8792 int isl_basic_map_dim_has_upper_bound(__isl_keep isl_basic_map *bmap,
8793 enum isl_dim_type type, unsigned pos)
8795 return basic_map_dim_is_bounded(bmap, type, pos, 1, 0);
8798 int isl_map_dim_is_bounded(__isl_keep isl_map *map,
8799 enum isl_dim_type type, unsigned pos)
8806 for (i = 0; i < map->n; ++i) {
8808 bounded = isl_basic_map_dim_is_bounded(map->p[i], type, pos);
8809 if (bounded < 0 || !bounded)
8816 /* Return 1 if the specified dim is involved in both an upper bound
8817 * and a lower bound.
8819 int isl_set_dim_is_bounded(__isl_keep isl_set *set,
8820 enum isl_dim_type type, unsigned pos)
8822 return isl_map_dim_is_bounded((isl_map *)set, type, pos);
8825 static int has_bound(__isl_keep isl_map *map,
8826 enum isl_dim_type type, unsigned pos,
8827 int (*fn)(__isl_keep isl_basic_map *bmap,
8828 enum isl_dim_type type, unsigned pos))
8835 for (i = 0; i < map->n; ++i) {
8837 bounded = fn(map->p[i], type, pos);
8838 if (bounded < 0 || bounded)
8845 /* Return 1 if the specified dim is involved in any lower bound.
8847 int isl_set_dim_has_lower_bound(__isl_keep isl_set *set,
8848 enum isl_dim_type type, unsigned pos)
8850 return has_bound(set, type, pos, &isl_basic_map_dim_has_lower_bound);
8853 /* Return 1 if the specified dim is involved in any upper bound.
8855 int isl_set_dim_has_upper_bound(__isl_keep isl_set *set,
8856 enum isl_dim_type type, unsigned pos)
8858 return has_bound(set, type, pos, &isl_basic_map_dim_has_upper_bound);
8861 /* For each of the "n" variables starting at "first", determine
8862 * the sign of the variable and put the results in the first "n"
8863 * elements of the array "signs".
8865 * 1 means that the variable is non-negative
8866 * -1 means that the variable is non-positive
8867 * 0 means the variable attains both positive and negative values.
8869 int isl_basic_set_vars_get_sign(__isl_keep isl_basic_set *bset,
8870 unsigned first, unsigned n, int *signs)
8872 isl_vec *bound = NULL;
8873 struct isl_tab *tab = NULL;
8874 struct isl_tab_undo *snap;
8877 if (!bset || !signs)
8880 bound = isl_vec_alloc(bset->ctx, 1 + isl_basic_set_total_dim(bset));
8881 tab = isl_tab_from_basic_set(bset, 0);
8885 isl_seq_clr(bound->el, bound->size);
8886 isl_int_set_si(bound->el[0], -1);
8888 snap = isl_tab_snap(tab);
8889 for (i = 0; i < n; ++i) {
8892 isl_int_set_si(bound->el[1 + first + i], -1);
8893 if (isl_tab_add_ineq(tab, bound->el) < 0)
8896 isl_int_set_si(bound->el[1 + first + i], 0);
8897 if (isl_tab_rollback(tab, snap) < 0)
8905 isl_int_set_si(bound->el[1 + first + i], 1);
8906 if (isl_tab_add_ineq(tab, bound->el) < 0)
8909 isl_int_set_si(bound->el[1 + first + i], 0);
8910 if (isl_tab_rollback(tab, snap) < 0)
8913 signs[i] = empty ? -1 : 0;
8917 isl_vec_free(bound);
8921 isl_vec_free(bound);
8925 int isl_basic_set_dims_get_sign(__isl_keep isl_basic_set *bset,
8926 enum isl_dim_type type, unsigned first, unsigned n, int *signs)
8928 if (!bset || !signs)
8930 isl_assert(bset->ctx, first + n <= isl_basic_set_dim(bset, type),
8933 first += pos(bset->dim, type) - 1;
8934 return isl_basic_set_vars_get_sign(bset, first, n, signs);
8937 /* Check if the given basic map is obviously single-valued.
8938 * In particular, for each output dimension, check that there is
8939 * an equality that defines the output dimension in terms of
8940 * earlier dimensions.
8942 int isl_basic_map_plain_is_single_valued(__isl_keep isl_basic_map *bmap)
8952 total = 1 + isl_basic_map_total_dim(bmap);
8953 n_out = isl_basic_map_dim(bmap, isl_dim_out);
8954 o_out = isl_basic_map_offset(bmap, isl_dim_out);
8956 for (i = 0; i < n_out; ++i) {
8957 for (j = 0; j < bmap->n_eq; ++j) {
8958 if (isl_int_is_zero(bmap->eq[j][o_out + i]))
8960 if (isl_seq_first_non_zero(bmap->eq[j] + o_out + i + 1,
8961 total - (o_out + i + 1)) == -1)
8964 if (j >= bmap->n_eq)
8971 /* Check if the given basic map is single-valued.
8976 * and check if the result is a subset of the identity mapping.
8978 int isl_basic_map_is_single_valued(__isl_keep isl_basic_map *bmap)
8981 isl_basic_map *test;
8985 sv = isl_basic_map_plain_is_single_valued(bmap);
8989 test = isl_basic_map_reverse(isl_basic_map_copy(bmap));
8990 test = isl_basic_map_apply_range(test, isl_basic_map_copy(bmap));
8992 space = isl_basic_map_get_space(bmap);
8993 space = isl_space_map_from_set(isl_space_range(space));
8994 id = isl_basic_map_identity(space);
8996 sv = isl_basic_map_is_subset(test, id);
8998 isl_basic_map_free(test);
8999 isl_basic_map_free(id);
9004 /* Check if the given map is obviously single-valued.
9006 int isl_map_plain_is_single_valued(__isl_keep isl_map *map)
9015 return isl_basic_map_plain_is_single_valued(map->p[0]);
9018 /* Check if the given map is single-valued.
9023 * and check if the result is a subset of the identity mapping.
9025 int isl_map_is_single_valued(__isl_keep isl_map *map)
9032 sv = isl_map_plain_is_single_valued(map);
9036 test = isl_map_reverse(isl_map_copy(map));
9037 test = isl_map_apply_range(test, isl_map_copy(map));
9039 dim = isl_space_map_from_set(isl_space_range(isl_map_get_space(map)));
9040 id = isl_map_identity(dim);
9042 sv = isl_map_is_subset(test, id);
9050 int isl_map_is_injective(__isl_keep isl_map *map)
9054 map = isl_map_copy(map);
9055 map = isl_map_reverse(map);
9056 in = isl_map_is_single_valued(map);
9062 /* Check if the given map is obviously injective.
9064 int isl_map_plain_is_injective(__isl_keep isl_map *map)
9068 map = isl_map_copy(map);
9069 map = isl_map_reverse(map);
9070 in = isl_map_plain_is_single_valued(map);
9076 int isl_map_is_bijective(__isl_keep isl_map *map)
9080 sv = isl_map_is_single_valued(map);
9084 return isl_map_is_injective(map);
9087 int isl_set_is_singleton(__isl_keep isl_set *set)
9089 return isl_map_is_single_valued((isl_map *)set);
9092 int isl_map_is_translation(__isl_keep isl_map *map)
9097 delta = isl_map_deltas(isl_map_copy(map));
9098 ok = isl_set_is_singleton(delta);
9099 isl_set_free(delta);
9104 static int unique(isl_int *p, unsigned pos, unsigned len)
9106 if (isl_seq_first_non_zero(p, pos) != -1)
9108 if (isl_seq_first_non_zero(p + pos + 1, len - pos - 1) != -1)
9113 int isl_basic_set_is_box(__isl_keep isl_basic_set *bset)
9122 if (isl_basic_set_dim(bset, isl_dim_div) != 0)
9125 nvar = isl_basic_set_dim(bset, isl_dim_set);
9126 ovar = isl_space_offset(bset->dim, isl_dim_set);
9127 for (j = 0; j < nvar; ++j) {
9128 int lower = 0, upper = 0;
9129 for (i = 0; i < bset->n_eq; ++i) {
9130 if (isl_int_is_zero(bset->eq[i][1 + ovar + j]))
9132 if (!unique(bset->eq[i] + 1 + ovar, j, nvar))
9138 for (i = 0; i < bset->n_ineq; ++i) {
9139 if (isl_int_is_zero(bset->ineq[i][1 + ovar + j]))
9141 if (!unique(bset->ineq[i] + 1 + ovar, j, nvar))
9143 if (isl_int_is_pos(bset->ineq[i][1 + ovar + j]))
9148 if (!lower || !upper)
9155 int isl_set_is_box(__isl_keep isl_set *set)
9162 return isl_basic_set_is_box(set->p[0]);
9165 int isl_basic_set_is_wrapping(__isl_keep isl_basic_set *bset)
9170 return isl_space_is_wrapping(bset->dim);
9173 int isl_set_is_wrapping(__isl_keep isl_set *set)
9178 return isl_space_is_wrapping(set->dim);
9181 __isl_give isl_basic_set *isl_basic_map_wrap(__isl_take isl_basic_map *bmap)
9183 bmap = isl_basic_map_cow(bmap);
9187 bmap->dim = isl_space_wrap(bmap->dim);
9191 bmap = isl_basic_map_finalize(bmap);
9193 return (isl_basic_set *)bmap;
9195 isl_basic_map_free(bmap);
9199 __isl_give isl_set *isl_map_wrap(__isl_take isl_map *map)
9203 map = isl_map_cow(map);
9207 for (i = 0; i < map->n; ++i) {
9208 map->p[i] = (isl_basic_map *)isl_basic_map_wrap(map->p[i]);
9212 map->dim = isl_space_wrap(map->dim);
9216 return (isl_set *)map;
9222 __isl_give isl_basic_map *isl_basic_set_unwrap(__isl_take isl_basic_set *bset)
9224 bset = isl_basic_set_cow(bset);
9228 bset->dim = isl_space_unwrap(bset->dim);
9232 bset = isl_basic_set_finalize(bset);
9234 return (isl_basic_map *)bset;
9236 isl_basic_set_free(bset);
9240 __isl_give isl_map *isl_set_unwrap(__isl_take isl_set *set)
9247 if (!isl_set_is_wrapping(set))
9248 isl_die(set->ctx, isl_error_invalid, "not a wrapping set",
9251 set = isl_set_cow(set);
9255 for (i = 0; i < set->n; ++i) {
9256 set->p[i] = (isl_basic_set *)isl_basic_set_unwrap(set->p[i]);
9261 set->dim = isl_space_unwrap(set->dim);
9265 return (isl_map *)set;
9271 __isl_give isl_basic_map *isl_basic_map_reset(__isl_take isl_basic_map *bmap,
9272 enum isl_dim_type type)
9277 if (!isl_space_is_named_or_nested(bmap->dim, type))
9280 bmap = isl_basic_map_cow(bmap);
9284 bmap->dim = isl_space_reset(bmap->dim, type);
9288 bmap = isl_basic_map_finalize(bmap);
9292 isl_basic_map_free(bmap);
9296 __isl_give isl_map *isl_map_reset(__isl_take isl_map *map,
9297 enum isl_dim_type type)
9304 if (!isl_space_is_named_or_nested(map->dim, type))
9307 map = isl_map_cow(map);
9311 for (i = 0; i < map->n; ++i) {
9312 map->p[i] = isl_basic_map_reset(map->p[i], type);
9316 map->dim = isl_space_reset(map->dim, type);
9326 __isl_give isl_basic_map *isl_basic_map_flatten(__isl_take isl_basic_map *bmap)
9331 if (!bmap->dim->nested[0] && !bmap->dim->nested[1])
9334 bmap = isl_basic_map_cow(bmap);
9338 bmap->dim = isl_space_flatten(bmap->dim);
9342 bmap = isl_basic_map_finalize(bmap);
9346 isl_basic_map_free(bmap);
9350 __isl_give isl_basic_set *isl_basic_set_flatten(__isl_take isl_basic_set *bset)
9352 return (isl_basic_set *)isl_basic_map_flatten((isl_basic_map *)bset);
9355 __isl_give isl_basic_map *isl_basic_map_flatten_domain(
9356 __isl_take isl_basic_map *bmap)
9361 if (!bmap->dim->nested[0])
9364 bmap = isl_basic_map_cow(bmap);
9368 bmap->dim = isl_space_flatten_domain(bmap->dim);
9372 bmap = isl_basic_map_finalize(bmap);
9376 isl_basic_map_free(bmap);
9380 __isl_give isl_basic_map *isl_basic_map_flatten_range(
9381 __isl_take isl_basic_map *bmap)
9386 if (!bmap->dim->nested[1])
9389 bmap = isl_basic_map_cow(bmap);
9393 bmap->dim = isl_space_flatten_range(bmap->dim);
9397 bmap = isl_basic_map_finalize(bmap);
9401 isl_basic_map_free(bmap);
9405 __isl_give isl_map *isl_map_flatten(__isl_take isl_map *map)
9412 if (!map->dim->nested[0] && !map->dim->nested[1])
9415 map = isl_map_cow(map);
9419 for (i = 0; i < map->n; ++i) {
9420 map->p[i] = isl_basic_map_flatten(map->p[i]);
9424 map->dim = isl_space_flatten(map->dim);
9434 __isl_give isl_set *isl_set_flatten(__isl_take isl_set *set)
9436 return (isl_set *)isl_map_flatten((isl_map *)set);
9439 __isl_give isl_map *isl_set_flatten_map(__isl_take isl_set *set)
9441 isl_space *dim, *flat_dim;
9444 dim = isl_set_get_space(set);
9445 flat_dim = isl_space_flatten(isl_space_copy(dim));
9446 map = isl_map_identity(isl_space_join(isl_space_reverse(dim), flat_dim));
9447 map = isl_map_intersect_domain(map, set);
9452 __isl_give isl_map *isl_map_flatten_domain(__isl_take isl_map *map)
9459 if (!map->dim->nested[0])
9462 map = isl_map_cow(map);
9466 for (i = 0; i < map->n; ++i) {
9467 map->p[i] = isl_basic_map_flatten_domain(map->p[i]);
9471 map->dim = isl_space_flatten_domain(map->dim);
9481 __isl_give isl_map *isl_map_flatten_range(__isl_take isl_map *map)
9488 if (!map->dim->nested[1])
9491 map = isl_map_cow(map);
9495 for (i = 0; i < map->n; ++i) {
9496 map->p[i] = isl_basic_map_flatten_range(map->p[i]);
9500 map->dim = isl_space_flatten_range(map->dim);
9510 /* Reorder the dimensions of "bmap" according to the given dim_map
9511 * and set the dimension specification to "dim".
9513 __isl_give isl_basic_map *isl_basic_map_realign(__isl_take isl_basic_map *bmap,
9514 __isl_take isl_space *dim, __isl_take struct isl_dim_map *dim_map)
9519 bmap = isl_basic_map_cow(bmap);
9520 if (!bmap || !dim || !dim_map)
9523 flags = bmap->flags;
9524 ISL_FL_CLR(flags, ISL_BASIC_MAP_FINAL);
9525 ISL_FL_CLR(flags, ISL_BASIC_MAP_NORMALIZED);
9526 ISL_FL_CLR(flags, ISL_BASIC_MAP_NORMALIZED_DIVS);
9527 res = isl_basic_map_alloc_space(dim,
9528 bmap->n_div, bmap->n_eq, bmap->n_ineq);
9529 res = isl_basic_map_add_constraints_dim_map(res, bmap, dim_map);
9532 res = isl_basic_map_finalize(res);
9536 isl_basic_map_free(bmap);
9537 isl_space_free(dim);
9541 /* Reorder the dimensions of "map" according to given reordering.
9543 __isl_give isl_map *isl_map_realign(__isl_take isl_map *map,
9544 __isl_take isl_reordering *r)
9547 struct isl_dim_map *dim_map;
9549 map = isl_map_cow(map);
9550 dim_map = isl_dim_map_from_reordering(r);
9551 if (!map || !r || !dim_map)
9554 for (i = 0; i < map->n; ++i) {
9555 struct isl_dim_map *dim_map_i;
9557 dim_map_i = isl_dim_map_extend(dim_map, map->p[i]);
9559 map->p[i] = isl_basic_map_realign(map->p[i],
9560 isl_space_copy(r->dim), dim_map_i);
9566 map = isl_map_reset_space(map, isl_space_copy(r->dim));
9568 isl_reordering_free(r);
9574 isl_reordering_free(r);
9578 __isl_give isl_set *isl_set_realign(__isl_take isl_set *set,
9579 __isl_take isl_reordering *r)
9581 return (isl_set *)isl_map_realign((isl_map *)set, r);
9584 __isl_give isl_map *isl_map_align_params(__isl_take isl_map *map,
9585 __isl_take isl_space *model)
9592 ctx = isl_space_get_ctx(model);
9593 if (!isl_space_has_named_params(model))
9594 isl_die(ctx, isl_error_invalid,
9595 "model has unnamed parameters", goto error);
9596 if (!isl_space_has_named_params(map->dim))
9597 isl_die(ctx, isl_error_invalid,
9598 "relation has unnamed parameters", goto error);
9599 if (!isl_space_match(map->dim, isl_dim_param, model, isl_dim_param)) {
9600 isl_reordering *exp;
9602 model = isl_space_drop_dims(model, isl_dim_in,
9603 0, isl_space_dim(model, isl_dim_in));
9604 model = isl_space_drop_dims(model, isl_dim_out,
9605 0, isl_space_dim(model, isl_dim_out));
9606 exp = isl_parameter_alignment_reordering(map->dim, model);
9607 exp = isl_reordering_extend_space(exp, isl_map_get_space(map));
9608 map = isl_map_realign(map, exp);
9611 isl_space_free(model);
9614 isl_space_free(model);
9619 __isl_give isl_set *isl_set_align_params(__isl_take isl_set *set,
9620 __isl_take isl_space *model)
9622 return isl_map_align_params(set, model);
9625 __isl_give isl_mat *isl_basic_map_equalities_matrix(
9626 __isl_keep isl_basic_map *bmap, enum isl_dim_type c1,
9627 enum isl_dim_type c2, enum isl_dim_type c3,
9628 enum isl_dim_type c4, enum isl_dim_type c5)
9630 enum isl_dim_type c[5] = { c1, c2, c3, c4, c5 };
9631 struct isl_mat *mat;
9637 mat = isl_mat_alloc(bmap->ctx, bmap->n_eq,
9638 isl_basic_map_total_dim(bmap) + 1);
9641 for (i = 0; i < bmap->n_eq; ++i)
9642 for (j = 0, pos = 0; j < 5; ++j) {
9643 int off = isl_basic_map_offset(bmap, c[j]);
9644 for (k = 0; k < isl_basic_map_dim(bmap, c[j]); ++k) {
9645 isl_int_set(mat->row[i][pos],
9646 bmap->eq[i][off + k]);
9654 __isl_give isl_mat *isl_basic_map_inequalities_matrix(
9655 __isl_keep isl_basic_map *bmap, enum isl_dim_type c1,
9656 enum isl_dim_type c2, enum isl_dim_type c3,
9657 enum isl_dim_type c4, enum isl_dim_type c5)
9659 enum isl_dim_type c[5] = { c1, c2, c3, c4, c5 };
9660 struct isl_mat *mat;
9666 mat = isl_mat_alloc(bmap->ctx, bmap->n_ineq,
9667 isl_basic_map_total_dim(bmap) + 1);
9670 for (i = 0; i < bmap->n_ineq; ++i)
9671 for (j = 0, pos = 0; j < 5; ++j) {
9672 int off = isl_basic_map_offset(bmap, c[j]);
9673 for (k = 0; k < isl_basic_map_dim(bmap, c[j]); ++k) {
9674 isl_int_set(mat->row[i][pos],
9675 bmap->ineq[i][off + k]);
9683 __isl_give isl_basic_map *isl_basic_map_from_constraint_matrices(
9684 __isl_take isl_space *dim,
9685 __isl_take isl_mat *eq, __isl_take isl_mat *ineq, enum isl_dim_type c1,
9686 enum isl_dim_type c2, enum isl_dim_type c3,
9687 enum isl_dim_type c4, enum isl_dim_type c5)
9689 enum isl_dim_type c[5] = { c1, c2, c3, c4, c5 };
9690 isl_basic_map *bmap;
9696 if (!dim || !eq || !ineq)
9699 if (eq->n_col != ineq->n_col)
9700 isl_die(dim->ctx, isl_error_invalid,
9701 "equalities and inequalities matrices should have "
9702 "same number of columns", goto error);
9704 total = 1 + isl_space_dim(dim, isl_dim_all);
9706 if (eq->n_col < total)
9707 isl_die(dim->ctx, isl_error_invalid,
9708 "number of columns too small", goto error);
9710 extra = eq->n_col - total;
9712 bmap = isl_basic_map_alloc_space(isl_space_copy(dim), extra,
9713 eq->n_row, ineq->n_row);
9716 for (i = 0; i < extra; ++i) {
9717 k = isl_basic_map_alloc_div(bmap);
9720 isl_int_set_si(bmap->div[k][0], 0);
9722 for (i = 0; i < eq->n_row; ++i) {
9723 l = isl_basic_map_alloc_equality(bmap);
9726 for (j = 0, pos = 0; j < 5; ++j) {
9727 int off = isl_basic_map_offset(bmap, c[j]);
9728 for (k = 0; k < isl_basic_map_dim(bmap, c[j]); ++k) {
9729 isl_int_set(bmap->eq[l][off + k],
9735 for (i = 0; i < ineq->n_row; ++i) {
9736 l = isl_basic_map_alloc_inequality(bmap);
9739 for (j = 0, pos = 0; j < 5; ++j) {
9740 int off = isl_basic_map_offset(bmap, c[j]);
9741 for (k = 0; k < isl_basic_map_dim(bmap, c[j]); ++k) {
9742 isl_int_set(bmap->ineq[l][off + k],
9749 isl_space_free(dim);
9755 isl_space_free(dim);
9761 __isl_give isl_mat *isl_basic_set_equalities_matrix(
9762 __isl_keep isl_basic_set *bset, enum isl_dim_type c1,
9763 enum isl_dim_type c2, enum isl_dim_type c3, enum isl_dim_type c4)
9765 return isl_basic_map_equalities_matrix((isl_basic_map *)bset,
9766 c1, c2, c3, c4, isl_dim_in);
9769 __isl_give isl_mat *isl_basic_set_inequalities_matrix(
9770 __isl_keep isl_basic_set *bset, enum isl_dim_type c1,
9771 enum isl_dim_type c2, enum isl_dim_type c3, enum isl_dim_type c4)
9773 return isl_basic_map_inequalities_matrix((isl_basic_map *)bset,
9774 c1, c2, c3, c4, isl_dim_in);
9777 __isl_give isl_basic_set *isl_basic_set_from_constraint_matrices(
9778 __isl_take isl_space *dim,
9779 __isl_take isl_mat *eq, __isl_take isl_mat *ineq, enum isl_dim_type c1,
9780 enum isl_dim_type c2, enum isl_dim_type c3, enum isl_dim_type c4)
9782 return (isl_basic_set*)
9783 isl_basic_map_from_constraint_matrices(dim, eq, ineq,
9784 c1, c2, c3, c4, isl_dim_in);
9787 int isl_basic_map_can_zip(__isl_keep isl_basic_map *bmap)
9792 return isl_space_can_zip(bmap->dim);
9795 int isl_map_can_zip(__isl_keep isl_map *map)
9800 return isl_space_can_zip(map->dim);
9803 /* Given a basic map (A -> B) -> (C -> D), return the corresponding basic map
9804 * (A -> C) -> (B -> D).
9806 __isl_give isl_basic_map *isl_basic_map_zip(__isl_take isl_basic_map *bmap)
9815 if (!isl_basic_map_can_zip(bmap))
9816 isl_die(bmap->ctx, isl_error_invalid,
9817 "basic map cannot be zipped", goto error);
9818 pos = isl_basic_map_offset(bmap, isl_dim_in) +
9819 isl_space_dim(bmap->dim->nested[0], isl_dim_in);
9820 n1 = isl_space_dim(bmap->dim->nested[0], isl_dim_out);
9821 n2 = isl_space_dim(bmap->dim->nested[1], isl_dim_in);
9822 bmap = isl_basic_map_swap_vars(bmap, pos, n1, n2);
9825 bmap->dim = isl_space_zip(bmap->dim);
9830 isl_basic_map_free(bmap);
9834 /* Given a map (A -> B) -> (C -> D), return the corresponding map
9835 * (A -> C) -> (B -> D).
9837 __isl_give isl_map *isl_map_zip(__isl_take isl_map *map)
9844 if (!isl_map_can_zip(map))
9845 isl_die(map->ctx, isl_error_invalid, "map cannot be zipped",
9848 map = isl_map_cow(map);
9852 for (i = 0; i < map->n; ++i) {
9853 map->p[i] = isl_basic_map_zip(map->p[i]);
9858 map->dim = isl_space_zip(map->dim);
9868 /* Can we apply isl_basic_map_curry to "bmap"?
9869 * That is, does it have a nested relation in its domain?
9871 int isl_basic_map_can_curry(__isl_keep isl_basic_map *bmap)
9876 return isl_space_can_curry(bmap->dim);
9879 /* Can we apply isl_map_curry to "map"?
9880 * That is, does it have a nested relation in its domain?
9882 int isl_map_can_curry(__isl_keep isl_map *map)
9887 return isl_space_can_curry(map->dim);
9890 /* Given a basic map (A -> B) -> C, return the corresponding basic map
9893 __isl_give isl_basic_map *isl_basic_map_curry(__isl_take isl_basic_map *bmap)
9899 if (!isl_basic_map_can_curry(bmap))
9900 isl_die(bmap->ctx, isl_error_invalid,
9901 "basic map cannot be curried", goto error);
9902 bmap->dim = isl_space_curry(bmap->dim);
9907 isl_basic_map_free(bmap);
9911 /* Given a map (A -> B) -> C, return the corresponding map
9914 __isl_give isl_map *isl_map_curry(__isl_take isl_map *map)
9921 if (!isl_map_can_curry(map))
9922 isl_die(map->ctx, isl_error_invalid, "map cannot be curried",
9925 map = isl_map_cow(map);
9929 for (i = 0; i < map->n; ++i) {
9930 map->p[i] = isl_basic_map_curry(map->p[i]);
9935 map->dim = isl_space_curry(map->dim);
9945 /* Construct a basic map mapping the domain of the affine expression
9946 * to a one-dimensional range prescribed by the affine expression.
9948 __isl_give isl_basic_map *isl_basic_map_from_aff(__isl_take isl_aff *aff)
9952 isl_local_space *ls;
9953 isl_basic_map *bmap;
9958 ls = isl_aff_get_local_space(aff);
9959 bmap = isl_basic_map_from_local_space(ls);
9960 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
9961 k = isl_basic_map_alloc_equality(bmap);
9965 pos = isl_basic_map_offset(bmap, isl_dim_out);
9966 isl_seq_cpy(bmap->eq[k], aff->v->el + 1, pos);
9967 isl_int_neg(bmap->eq[k][pos], aff->v->el[0]);
9968 isl_seq_cpy(bmap->eq[k] + pos + 1, aff->v->el + 1 + pos,
9969 aff->v->size - (pos + 1));
9972 bmap = isl_basic_map_finalize(bmap);
9976 isl_basic_map_free(bmap);
9980 /* Construct a map mapping the domain of the affine expression
9981 * to a one-dimensional range prescribed by the affine expression.
9983 __isl_give isl_map *isl_map_from_aff(__isl_take isl_aff *aff)
9985 isl_basic_map *bmap;
9987 bmap = isl_basic_map_from_aff(aff);
9988 return isl_map_from_basic_map(bmap);
9991 /* Construct a basic map mapping the domain the multi-affine expression
9992 * to its range, with each dimension in the range equated to the
9993 * corresponding affine expression.
9995 __isl_give isl_basic_map *isl_basic_map_from_multi_aff(
9996 __isl_take isl_multi_aff *maff)
10000 isl_basic_map *bmap;
10005 if (isl_space_dim(maff->space, isl_dim_out) != maff->n)
10006 isl_die(isl_multi_aff_get_ctx(maff), isl_error_internal,
10007 "invalid space", return isl_multi_aff_free(maff));
10009 space = isl_space_domain(isl_multi_aff_get_space(maff));
10010 bmap = isl_basic_map_universe(isl_space_from_domain(space));
10012 for (i = 0; i < maff->n; ++i) {
10014 isl_basic_map *bmap_i;
10016 aff = isl_aff_copy(maff->p[i]);
10017 bmap_i = isl_basic_map_from_aff(aff);
10019 bmap = isl_basic_map_flat_range_product(bmap, bmap_i);
10022 bmap = isl_basic_map_reset_space(bmap, isl_multi_aff_get_space(maff));
10024 isl_multi_aff_free(maff);
10028 /* Construct a map mapping the domain the multi-affine expression
10029 * to its range, with each dimension in the range equated to the
10030 * corresponding affine expression.
10032 __isl_give isl_map *isl_map_from_multi_aff(__isl_take isl_multi_aff *maff)
10034 isl_basic_map *bmap;
10036 bmap = isl_basic_map_from_multi_aff(maff);
10037 return isl_map_from_basic_map(bmap);
10040 /* Construct a basic map mapping a domain in the given space to
10041 * to an n-dimensional range, with n the number of elements in the list,
10042 * where each coordinate in the range is prescribed by the
10043 * corresponding affine expression.
10044 * The domains of all affine expressions in the list are assumed to match
10047 __isl_give isl_basic_map *isl_basic_map_from_aff_list(
10048 __isl_take isl_space *domain_dim, __isl_take isl_aff_list *list)
10052 isl_basic_map *bmap;
10057 dim = isl_space_from_domain(domain_dim);
10058 bmap = isl_basic_map_universe(dim);
10060 for (i = 0; i < list->n; ++i) {
10062 isl_basic_map *bmap_i;
10064 aff = isl_aff_copy(list->p[i]);
10065 bmap_i = isl_basic_map_from_aff(aff);
10067 bmap = isl_basic_map_flat_range_product(bmap, bmap_i);
10070 isl_aff_list_free(list);
10074 __isl_give isl_set *isl_set_equate(__isl_take isl_set *set,
10075 enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
10077 return isl_map_equate(set, type1, pos1, type2, pos2);
10080 /* Construct a basic map where the given dimensions are equal to each other.
10082 static __isl_give isl_basic_map *equator(__isl_take isl_space *space,
10083 enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
10085 isl_basic_map *bmap = NULL;
10091 if (pos1 >= isl_space_dim(space, type1))
10092 isl_die(isl_space_get_ctx(space), isl_error_invalid,
10093 "index out of bounds", goto error);
10094 if (pos2 >= isl_space_dim(space, type2))
10095 isl_die(isl_space_get_ctx(space), isl_error_invalid,
10096 "index out of bounds", goto error);
10098 bmap = isl_basic_map_alloc_space(isl_space_copy(space), 0, 1, 0);
10099 i = isl_basic_map_alloc_equality(bmap);
10102 isl_seq_clr(bmap->eq[i], 1 + isl_basic_map_total_dim(bmap));
10103 pos1 += isl_basic_map_offset(bmap, type1);
10104 pos2 += isl_basic_map_offset(bmap, type2);
10105 isl_int_set_si(bmap->eq[i][pos1], -1);
10106 isl_int_set_si(bmap->eq[i][pos2], 1);
10107 bmap = isl_basic_map_finalize(bmap);
10108 isl_space_free(space);
10111 isl_space_free(space);
10112 isl_basic_map_free(bmap);
10116 /* Add a constraint imposing that the given two dimensions are equal.
10118 __isl_give isl_basic_map *isl_basic_map_equate(__isl_take isl_basic_map *bmap,
10119 enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
10123 eq = equator(isl_basic_map_get_space(bmap), type1, pos1, type2, pos2);
10125 bmap = isl_basic_map_intersect(bmap, eq);
10130 /* Add a constraint imposing that the given two dimensions are equal.
10132 __isl_give isl_map *isl_map_equate(__isl_take isl_map *map,
10133 enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
10135 isl_basic_map *bmap;
10137 bmap = equator(isl_map_get_space(map), type1, pos1, type2, pos2);
10139 map = isl_map_intersect(map, isl_map_from_basic_map(bmap));
10144 /* Add a constraint imposing that the given two dimensions have opposite values.
10146 __isl_give isl_map *isl_map_oppose(__isl_take isl_map *map,
10147 enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
10149 isl_basic_map *bmap = NULL;
10155 if (pos1 >= isl_map_dim(map, type1))
10156 isl_die(map->ctx, isl_error_invalid,
10157 "index out of bounds", goto error);
10158 if (pos2 >= isl_map_dim(map, type2))
10159 isl_die(map->ctx, isl_error_invalid,
10160 "index out of bounds", goto error);
10162 bmap = isl_basic_map_alloc_space(isl_map_get_space(map), 0, 1, 0);
10163 i = isl_basic_map_alloc_equality(bmap);
10166 isl_seq_clr(bmap->eq[i], 1 + isl_basic_map_total_dim(bmap));
10167 pos1 += isl_basic_map_offset(bmap, type1);
10168 pos2 += isl_basic_map_offset(bmap, type2);
10169 isl_int_set_si(bmap->eq[i][pos1], 1);
10170 isl_int_set_si(bmap->eq[i][pos2], 1);
10171 bmap = isl_basic_map_finalize(bmap);
10173 map = isl_map_intersect(map, isl_map_from_basic_map(bmap));
10177 isl_basic_map_free(bmap);
10182 /* Add a constraint imposing that the value of the first dimension is
10183 * greater than that of the second.
10185 __isl_give isl_map *isl_map_order_gt(__isl_take isl_map *map,
10186 enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
10188 isl_basic_map *bmap = NULL;
10194 if (pos1 >= isl_map_dim(map, type1))
10195 isl_die(map->ctx, isl_error_invalid,
10196 "index out of bounds", goto error);
10197 if (pos2 >= isl_map_dim(map, type2))
10198 isl_die(map->ctx, isl_error_invalid,
10199 "index out of bounds", goto error);
10201 bmap = isl_basic_map_alloc_space(isl_map_get_space(map), 0, 0, 1);
10202 i = isl_basic_map_alloc_inequality(bmap);
10205 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
10206 pos1 += isl_basic_map_offset(bmap, type1);
10207 pos2 += isl_basic_map_offset(bmap, type2);
10208 isl_int_set_si(bmap->ineq[i][pos1], 1);
10209 isl_int_set_si(bmap->ineq[i][pos2], -1);
10210 isl_int_set_si(bmap->ineq[i][0], -1);
10211 bmap = isl_basic_map_finalize(bmap);
10213 map = isl_map_intersect(map, isl_map_from_basic_map(bmap));
10217 isl_basic_map_free(bmap);
10222 __isl_give isl_aff *isl_basic_map_get_div(__isl_keep isl_basic_map *bmap,
10226 isl_local_space *ls;
10231 if (!isl_basic_map_divs_known(bmap))
10232 isl_die(isl_basic_map_get_ctx(bmap), isl_error_invalid,
10233 "some divs are unknown", return NULL);
10235 ls = isl_basic_map_get_local_space(bmap);
10236 div = isl_local_space_get_div(ls, pos);
10237 isl_local_space_free(ls);
10242 __isl_give isl_aff *isl_basic_set_get_div(__isl_keep isl_basic_set *bset,
10245 return isl_basic_map_get_div(bset, pos);
10248 /* Plug in "subs" for dimension "type", "pos" of "bset".
10250 * Let i be the dimension to replace and let "subs" be of the form
10254 * Any integer division with a non-zero coefficient for i,
10256 * floor((a i + g)/m)
10260 * floor((a f + d g)/(m d))
10262 * Constraints of the form
10270 __isl_give isl_basic_set *isl_basic_set_substitute(
10271 __isl_take isl_basic_set *bset,
10272 enum isl_dim_type type, unsigned pos, __isl_keep isl_aff *subs)
10278 if (bset && isl_basic_set_plain_is_empty(bset))
10281 bset = isl_basic_set_cow(bset);
10282 if (!bset || !subs)
10285 ctx = isl_basic_set_get_ctx(bset);
10286 if (!isl_space_is_equal(bset->dim, subs->ls->dim))
10287 isl_die(ctx, isl_error_invalid,
10288 "spaces don't match", goto error);
10289 if (isl_local_space_dim(subs->ls, isl_dim_div) != 0)
10290 isl_die(ctx, isl_error_unsupported,
10291 "cannot handle divs yet", goto error);
10293 pos += isl_basic_set_offset(bset, type);
10297 for (i = 0; i < bset->n_eq; ++i) {
10298 if (isl_int_is_zero(bset->eq[i][pos]))
10300 isl_int_set(v, bset->eq[i][pos]);
10301 isl_int_set_si(bset->eq[i][pos], 0);
10302 isl_seq_combine(bset->eq[i], subs->v->el[0], bset->eq[i],
10303 v, subs->v->el + 1, subs->v->size - 1);
10306 for (i = 0; i < bset->n_ineq; ++i) {
10307 if (isl_int_is_zero(bset->ineq[i][pos]))
10309 isl_int_set(v, bset->ineq[i][pos]);
10310 isl_int_set_si(bset->ineq[i][pos], 0);
10311 isl_seq_combine(bset->ineq[i], subs->v->el[0], bset->ineq[i],
10312 v, subs->v->el + 1, subs->v->size - 1);
10315 for (i = 0; i < bset->n_div; ++i) {
10316 if (isl_int_is_zero(bset->div[i][1 + pos]))
10318 isl_int_set(v, bset->div[i][1 + pos]);
10319 isl_int_set_si(bset->div[i][1 + pos], 0);
10320 isl_seq_combine(bset->div[i] + 1,
10321 subs->v->el[0], bset->div[i] + 1,
10322 v, subs->v->el + 1, subs->v->size - 1);
10323 isl_int_mul(bset->div[i][0], bset->div[i][0], subs->v->el[0]);
10328 bset = isl_basic_set_simplify(bset);
10329 return isl_basic_set_finalize(bset);
10331 isl_basic_set_free(bset);
10335 /* Plug in "subs" for dimension "type", "pos" of "set".
10337 __isl_give isl_set *isl_set_substitute(__isl_take isl_set *set,
10338 enum isl_dim_type type, unsigned pos, __isl_keep isl_aff *subs)
10342 if (set && isl_set_plain_is_empty(set))
10345 set = isl_set_cow(set);
10349 for (i = set->n - 1; i >= 0; --i) {
10350 set->p[i] = isl_basic_set_substitute(set->p[i], type, pos, subs);
10351 if (remove_if_empty(set, i) < 0)