isl_pw_templ.c

   1 #define xFN(TYPE,NAME) TYPE ## _ ## NAME
   2 #define FN(TYPE,NAME) xFN(TYPE,NAME)
   3 #define xS(TYPE,NAME) struct TYPE ## _ ## NAME
   4 #define S(TYPE,NAME) xS(TYPE,NAME)
   5
   6 #ifdef HAS_TYPE
   7 static __isl_give PW *FN(PW,alloc_)(__isl_take isl_dim *dim,
   8         enum isl_fold type, int n)
   9 #else
  10 static __isl_give PW *FN(PW,alloc_)(__isl_take isl_dim *dim, int n)
  11 #endif
  12 {
  13         isl_ctx *ctx;
  14         struct PW *pw;
  15
  16         if (!dim)
  17                 return NULL;
  18         ctx = isl_dim_get_ctx(dim);
  19         isl_assert(ctx, n >= 0, goto error);
  20         pw = isl_alloc(ctx, struct PW,
  21                         sizeof(struct PW) + (n - 1) * sizeof(S(PW,piece)));
  22         if (!pw)
  23                 goto error;
  24
  25         pw->ref = 1;
  26 #ifdef HAS_TYPE
  27         pw->type = type;
  28 #endif
  29         pw->size = n;
  30         pw->n = 0;
  31         pw->dim = dim;
  32         return pw;
  33 error:
  34         isl_dim_free(dim);
  35         return NULL;
  36 }
  37
  38 #ifdef HAS_TYPE
  39 __isl_give PW *FN(PW,ZERO)(__isl_take isl_dim *dim, enum isl_fold type)
  40 {
  41         return FN(PW,alloc_)(dim, type, 0);
  42 }
  43 #else
  44 __isl_give PW *FN(PW,ZERO)(__isl_take isl_dim *dim)
  45 {
  46         return FN(PW,alloc_)(dim, 0);
  47 }
  48 #endif
  49
  50 __isl_give PW *FN(PW,add_piece)(__isl_take PW *pw,
  51         __isl_take isl_set *set, __isl_take EL *el)
  52 {
  53         isl_ctx *ctx;
  54         isl_dim *el_dim = NULL;
  55
  56         if (!pw || !set || !el)
  57                 goto error;
  58
  59         if (isl_set_plain_is_empty(set) || FN(EL,EL_IS_ZERO)(el)) {
  60                 isl_set_free(set);
  61                 FN(EL,free)(el);
  62                 return pw;
  63         }
  64
  65         ctx = isl_set_get_ctx(set);
  66 #ifdef HAS_TYPE
  67         if (pw->type != el->type)
  68                 isl_die(ctx, isl_error_invalid, "fold types don't match",
  69                         goto error);
  70 #endif
  71         el_dim = FN(EL,get_dim(el));
  72         isl_assert(ctx, isl_dim_equal(pw->dim, el_dim), goto error);
  73         isl_assert(ctx, pw->n < pw->size, goto error);
  74
  75         pw->p[pw->n].set = set;
  76         pw->p[pw->n].FIELD = el;
  77         pw->n++;
  78
  79         isl_dim_free(el_dim);
  80         return pw;
  81 error:
  82         isl_dim_free(el_dim);
  83         FN(PW,free)(pw);
  84         isl_set_free(set);
  85         FN(EL,free)(el);
  86         return NULL;
  87 }
  88
  89 #ifdef HAS_TYPE
  90 __isl_give PW *FN(PW,alloc)(enum isl_fold type,
  91         __isl_take isl_set *set, __isl_take EL *el)
  92 #else
  93 __isl_give PW *FN(PW,alloc)(__isl_take isl_set *set, __isl_take EL *el)
  94 #endif
  95 {
  96         PW *pw;
  97
  98         if (!set || !el)
  99                 goto error;
 100
 101 #ifdef HAS_TYPE
 102         pw = FN(PW,alloc_)(isl_set_get_dim(set), type, 1);
 103 #else
 104         pw = FN(PW,alloc_)(isl_set_get_dim(set), 1);
 105 #endif
 106
 107         return FN(PW,add_piece)(pw, set, el);
 108 error:
 109         isl_set_free(set);
 110         FN(EL,free)(el);
 111         return NULL;
 112 }
 113
 114 __isl_give PW *FN(PW,dup)(__isl_keep PW *pw)
 115 {
 116         int i;
 117         PW *dup;
 118
 119         if (!pw)
 120                 return NULL;
 121
 122 #ifdef HAS_TYPE
 123         dup = FN(PW,alloc_)(isl_dim_copy(pw->dim), pw->type, pw->n);
 124 #else
 125         dup = FN(PW,alloc_)(isl_dim_copy(pw->dim), pw->n);
 126 #endif
 127         if (!dup)
 128                 return NULL;
 129
 130         for (i = 0; i < pw->n; ++i)
 131                 dup = FN(PW,add_piece)(dup, isl_set_copy(pw->p[i].set),
 132                                             FN(EL,copy)(pw->p[i].FIELD));
 133
 134         return dup;
 135 }
 136
 137 __isl_give PW *FN(PW,cow)(__isl_take PW *pw)
 138 {
 139         if (!pw)
 140                 return NULL;
 141
 142         if (pw->ref == 1)
 143                 return pw;
 144         pw->ref--;
 145         return FN(PW,dup)(pw);
 146 }
 147
 148 __isl_give PW *FN(PW,copy)(__isl_keep PW *pw)
 149 {
 150         if (!pw)
 151                 return NULL;
 152
 153         pw->ref++;
 154         return pw;
 155 }
 156
 157 void *FN(PW,free)(__isl_take PW *pw)
 158 {
 159         int i;
 160
 161         if (!pw)
 162                 return NULL;
 163         if (--pw->ref > 0)
 164                 return NULL;
 165
 166         for (i = 0; i < pw->n; ++i) {
 167                 isl_set_free(pw->p[i].set);
 168                 FN(EL,free)(pw->p[i].FIELD);
 169         }
 170         isl_dim_free(pw->dim);
 171         free(pw);
 172
 173         return NULL;
 174 }
 175
 176 int FN(PW,IS_ZERO)(__isl_keep PW *pw)
 177 {
 178         if (!pw)
 179                 return -1;
 180
 181         return pw->n == 0;
 182 }
 183
 184 __isl_give PW *FN(PW,add)(__isl_take PW *pw1, __isl_take PW *pw2)
 185 {
 186         int i, j, n;
 187         struct PW *res;
 188         isl_ctx *ctx;
 189         isl_set *set;
 190
 191         if (!pw1 || !pw2)
 192                 goto error;
 193
 194         ctx = isl_dim_get_ctx(pw1->dim);
 195 #ifdef HAS_TYPE
 196         if (pw1->type != pw2->type)
 197                 isl_die(ctx, isl_error_invalid,
 198                         "fold types don't match", goto error);
 199 #endif
 200         isl_assert(ctx, isl_dim_equal(pw1->dim, pw2->dim), goto error);
 201
 202         if (FN(PW,IS_ZERO)(pw1)) {
 203                 FN(PW,free)(pw1);
 204                 return pw2;
 205         }
 206
 207         if (FN(PW,IS_ZERO)(pw2)) {
 208                 FN(PW,free)(pw2);
 209                 return pw1;
 210         }
 211
 212         n = (pw1->n + 1) * (pw2->n + 1);
 213 #ifdef HAS_TYPE
 214         res = FN(PW,alloc_)(isl_dim_copy(pw1->dim), pw1->type, n);
 215 #else
 216         res = FN(PW,alloc_)(isl_dim_copy(pw1->dim), n);
 217 #endif
 218
 219         for (i = 0; i < pw1->n; ++i) {
 220                 set = isl_set_copy(pw1->p[i].set);
 221                 for (j = 0; j < pw2->n; ++j) {
 222                         struct isl_set *common;
 223                         EL *sum;
 224                         set = isl_set_subtract(set,
 225                                         isl_set_copy(pw2->p[j].set));
 226                         common = isl_set_intersect(isl_set_copy(pw1->p[i].set),
 227                                                 isl_set_copy(pw2->p[j].set));
 228                         if (isl_set_plain_is_empty(common)) {
 229                                 isl_set_free(common);
 230                                 continue;
 231                         }
 232
 233                         sum = FN(EL,add_on_domain)(common,
 234                                                    FN(EL,copy)(pw1->p[i].FIELD),
 235                                                    FN(EL,copy)(pw2->p[j].FIELD));
 236
 237                         res = FN(PW,add_piece)(res, common, sum);
 238                 }
 239                 res = FN(PW,add_piece)(res, set, FN(EL,copy)(pw1->p[i].FIELD));
 240         }
 241
 242         for (j = 0; j < pw2->n; ++j) {
 243                 set = isl_set_copy(pw2->p[j].set);
 244                 for (i = 0; i < pw1->n; ++i)
 245                         set = isl_set_subtract(set,
 246                                         isl_set_copy(pw1->p[i].set));
 247                 res = FN(PW,add_piece)(res, set, FN(EL,copy)(pw2->p[j].FIELD));
 248         }
 249
 250         FN(PW,free)(pw1);
 251         FN(PW,free)(pw2);
 252
 253         return res;
 254 error:
 255         FN(PW,free)(pw1);
 256         FN(PW,free)(pw2);
 257         return NULL;
 258 }
 259
 260 __isl_give PW *FN(PW,add_disjoint)(__isl_take PW *pw1, __isl_take PW *pw2)
 261 {
 262         int i;
 263         isl_ctx *ctx;
 264         PW *res;
 265
 266         if (!pw1 || !pw2)
 267                 goto error;
 268
 269         ctx = isl_dim_get_ctx(pw1->dim);
 270 #ifdef HAS_TYPE
 271         if (pw1->type != pw2->type)
 272                 isl_die(ctx, isl_error_invalid,
 273                         "fold types don't match", goto error);
 274 #endif
 275         isl_assert(ctx, isl_dim_equal(pw1->dim, pw2->dim), goto error);
 276
 277         if (FN(PW,IS_ZERO)(pw1)) {
 278                 FN(PW,free)(pw1);
 279                 return pw2;
 280         }
 281
 282         if (FN(PW,IS_ZERO)(pw2)) {
 283                 FN(PW,free)(pw2);
 284                 return pw1;
 285         }
 286
 287 #ifdef HAS_TYPE
 288         res = FN(PW,alloc_)(isl_dim_copy(pw1->dim), pw1->type, pw1->n + pw2->n);
 289 #else
 290         res = FN(PW,alloc_)(isl_dim_copy(pw1->dim), pw1->n + pw2->n);
 291 #endif
 292
 293         for (i = 0; i < pw1->n; ++i)
 294                 res = FN(PW,add_piece)(res,
 295                                 isl_set_copy(pw1->p[i].set),
 296                                 FN(EL,copy)(pw1->p[i].FIELD));
 297
 298         for (i = 0; i < pw2->n; ++i)
 299                 res = FN(PW,add_piece)(res,
 300                                 isl_set_copy(pw2->p[i].set),
 301                                 FN(EL,copy)(pw2->p[i].FIELD));
 302
 303         FN(PW,free)(pw1);
 304         FN(PW,free)(pw2);
 305
 306         return res;
 307 error:
 308         FN(PW,free)(pw1);
 309         FN(PW,free)(pw2);
 310         return NULL;
 311 }
 312
 313 #ifndef NO_NEG
 314 __isl_give PW *FN(PW,neg)(__isl_take PW *pw)
 315 {
 316         int i;
 317
 318         if (!pw)
 319                 return NULL;
 320
 321         if (FN(PW,IS_ZERO)(pw))
 322                 return pw;
 323
 324         pw = FN(PW,cow)(pw);
 325         if (!pw)
 326                 return NULL;
 327
 328         for (i = 0; i < pw->n; ++i) {
 329                 pw->p[i].FIELD = FN(EL,neg)(pw->p[i].FIELD);
 330                 if (!pw->p[i].FIELD)
 331                         return FN(PW,free)(pw);
 332         }
 333
 334         return pw;
 335 }
 336
 337 __isl_give PW *FN(PW,sub)(__isl_take PW *pw1, __isl_take PW *pw2)
 338 {
 339         return FN(PW,add)(pw1, FN(PW,neg)(pw2));
 340 }
 341 #endif
 342
 343 #ifndef NO_EVAL
 344 __isl_give isl_qpolynomial *FN(PW,eval)(__isl_take PW *pw,
 345         __isl_take isl_point *pnt)
 346 {
 347         int i;
 348         int found = 0;
 349         isl_ctx *ctx;
 350         isl_dim *pnt_dim = NULL;
 351         isl_qpolynomial *qp;
 352
 353         if (!pw || !pnt)
 354                 goto error;
 355         ctx = isl_point_get_ctx(pnt);
 356         pnt_dim = isl_point_get_dim(pnt);
 357         isl_assert(ctx, isl_dim_equal(pnt_dim, pw->dim), goto error);
 358
 359         for (i = 0; i < pw->n; ++i) {
 360                 found = isl_set_contains_point(pw->p[i].set, pnt);
 361                 if (found < 0)
 362                         goto error;
 363                 if (found)
 364                         break;
 365         }
 366         if (found)
 367                 qp = FN(EL,eval)(FN(EL,copy)(pw->p[i].FIELD),
 368                                             isl_point_copy(pnt));
 369         else
 370                 qp = isl_qpolynomial_zero(isl_dim_copy(pw->dim));
 371         FN(PW,free)(pw);
 372         isl_dim_free(pnt_dim);
 373         isl_point_free(pnt);
 374         return qp;
 375 error:
 376         FN(PW,free)(pw);
 377         isl_dim_free(pnt_dim);
 378         isl_point_free(pnt);
 379         return NULL;
 380 }
 381 #endif
 382
 383 __isl_give isl_set *FN(PW,domain)(__isl_take PW *pw)
 384 {
 385         int i;
 386         isl_set *dom;
 387
 388         if (!pw)
 389                 return NULL;
 390
 391         dom = isl_set_empty(isl_dim_copy(pw->dim));
 392         for (i = 0; i < pw->n; ++i)
 393                 dom = isl_set_union_disjoint(dom, isl_set_copy(pw->p[i].set));
 394
 395         FN(PW,free)(pw);
 396
 397         return dom;
 398 }
 399
 400 __isl_give PW *FN(PW,intersect_domain)(__isl_take PW *pw, __isl_take isl_set *set)
 401 {
 402         int i;
 403
 404         if (!pw || !set)
 405                 goto error;
 406
 407         if (pw->n == 0) {
 408                 isl_set_free(set);
 409                 return pw;
 410         }
 411
 412         pw = FN(PW,cow)(pw);
 413         if (!pw)
 414                 goto error;
 415
 416         for (i = pw->n - 1; i >= 0; --i) {
 417                 isl_basic_set *aff;
 418                 pw->p[i].set = isl_set_intersect(pw->p[i].set, isl_set_copy(set));
 419                 if (!pw->p[i].set)
 420                         goto error;
 421                 aff = isl_set_affine_hull(isl_set_copy(pw->p[i].set));
 422                 pw->p[i].FIELD = FN(EL,substitute_equalities)(pw->p[i].FIELD,
 423                                                                 aff);
 424                 if (isl_set_plain_is_empty(pw->p[i].set)) {
 425                         isl_set_free(pw->p[i].set);
 426                         FN(EL,free)(pw->p[i].FIELD);
 427                         if (i != pw->n - 1)
 428                                 pw->p[i] = pw->p[pw->n - 1];
 429                         pw->n--;
 430                 }
 431         }
 432
 433         isl_set_free(set);
 434         return pw;
 435 error:
 436         isl_set_free(set);
 437         FN(PW,free)(pw);
 438         return NULL;
 439 }
 440
 441 __isl_give PW *FN(PW,gist)(__isl_take PW *pw, __isl_take isl_set *context)
 442 {
 443         int i;
 444         isl_basic_set *hull = NULL;
 445
 446         if (!pw || !context)
 447                 goto error;
 448
 449         if (pw->n == 0) {
 450                 isl_set_free(context);
 451                 return pw;
 452         }
 453
 454         context = isl_set_compute_divs(context);
 455         hull = isl_set_simple_hull(isl_set_copy(context));
 456
 457         pw = FN(PW,cow)(pw);
 458         if (!pw)
 459                 goto error;
 460
 461         for (i = pw->n - 1; i >= 0; --i) {
 462                 pw->p[i].set = isl_set_intersect(pw->p[i].set,
 463                                                  isl_set_copy(context));
 464                 if (!pw->p[i].set)
 465                         goto error;
 466                 pw->p[i].FIELD = FN(EL,gist)(pw->p[i].FIELD,
 467                                              isl_set_copy(pw->p[i].set));
 468                 pw->p[i].set = isl_set_gist_basic_set(pw->p[i].set,
 469                                                 isl_basic_set_copy(hull));
 470                 if (!pw->p[i].set)
 471                         goto error;
 472                 if (isl_set_plain_is_empty(pw->p[i].set)) {
 473                         isl_set_free(pw->p[i].set);
 474                         FN(EL,free)(pw->p[i].FIELD);
 475                         if (i != pw->n - 1)
 476                                 pw->p[i] = pw->p[pw->n - 1];
 477                         pw->n--;
 478                 }
 479         }
 480
 481         isl_basic_set_free(hull);
 482         isl_set_free(context);
 483
 484         return pw;
 485 error:
 486         FN(PW,free)(pw);
 487         isl_basic_set_free(hull);
 488         isl_set_free(context);
 489         return NULL;
 490 }
 491
 492 __isl_give PW *FN(PW,coalesce)(__isl_take PW *pw)
 493 {
 494         int i, j;
 495
 496         if (!pw)
 497                 return NULL;
 498         if (pw->n == 0)
 499                 return pw;
 500
 501         for (i = pw->n - 1; i >= 0; --i) {
 502                 for (j = i - 1; j >= 0; --j) {
 503                         if (!FN(EL,plain_is_equal)(pw->p[i].FIELD,
 504                                                         pw->p[j].FIELD))
 505                                 continue;
 506                         pw->p[j].set = isl_set_union(pw->p[j].set,
 507                                                         pw->p[i].set);
 508                         FN(EL,free)(pw->p[i].FIELD);
 509                         if (i != pw->n - 1)
 510                                 pw->p[i] = pw->p[pw->n - 1];
 511                         pw->n--;
 512                         break;
 513                 }
 514                 if (j >= 0)
 515                         continue;
 516                 pw->p[i].set = isl_set_coalesce(pw->p[i].set);
 517                 if (!pw->p[i].set)
 518                         goto error;
 519         }
 520
 521         return pw;
 522 error:
 523         FN(PW,free)(pw);
 524         return NULL;
 525 }
 526
 527 isl_ctx *FN(PW,get_ctx)(__isl_keep PW *pw)
 528 {
 529         return pw ? isl_dim_get_ctx(pw->dim) : NULL;
 530 }
 531
 532 #ifndef NO_INVOLVES_DIMS
 533 int FN(PW,involves_dims)(__isl_keep PW *pw, enum isl_dim_type type,
 534         unsigned first, unsigned n)
 535 {
 536         int i;
 537
 538         if (!pw)
 539                 return -1;
 540         if (pw->n == 0 || n == 0)
 541                 return 0;
 542         for (i = 0; i < pw->n; ++i) {
 543                 int involves = FN(EL,involves_dims)(pw->p[i].FIELD,
 544                                                         type, first, n);
 545                 if (involves < 0 || involves)
 546                         return involves;
 547                 involves = isl_set_involves_dims(pw->p[i].set, type, first, n);
 548                 if (involves < 0 || involves)
 549                         return involves;
 550         }
 551         return 0;
 552 }
 553 #endif
 554
 555 __isl_give PW *FN(PW,set_dim_name)(__isl_take PW *pw,
 556         enum isl_dim_type type, unsigned pos, const char *s)
 557 {
 558         int i;
 559
 560         pw = FN(PW,cow)(pw);
 561         if (!pw)
 562                 return NULL;
 563
 564         pw->dim = isl_dim_set_name(pw->dim, type, pos, s);
 565         if (!pw->dim)
 566                 goto error;
 567
 568         for (i = 0; i < pw->n; ++i) {
 569                 pw->p[i].set = isl_set_set_dim_name(pw->p[i].set, type, pos, s);
 570                 if (!pw->p[i].set)
 571                         goto error;
 572                 pw->p[i].FIELD = FN(EL,set_dim_name)(pw->p[i].FIELD, type, pos, s);
 573                 if (!pw->p[i].FIELD)
 574                         goto error;
 575         }
 576
 577         return pw;
 578 error:
 579         FN(PW,free)(pw);
 580         return NULL;
 581 }
 582
 583 #ifndef NO_DROP_DIMS
 584 __isl_give PW *FN(PW,drop_dims)(__isl_take PW *pw,
 585         enum isl_dim_type type, unsigned first, unsigned n)
 586 {
 587         int i;
 588
 589         if (!pw)
 590                 return NULL;
 591         if (n == 0 && !isl_dim_get_tuple_name(pw->dim, type))
 592                 return pw;
 593
 594         pw = FN(PW,cow)(pw);
 595         if (!pw)
 596                 return NULL;
 597         pw->dim = isl_dim_drop(pw->dim, type, first, n);
 598         if (!pw->dim)
 599                 goto error;
 600         for (i = 0; i < pw->n; ++i) {
 601                 pw->p[i].set = isl_set_drop(pw->p[i].set, type, first, n);
 602                 if (!pw->p[i].set)
 603                         goto error;
 604                 pw->p[i].FIELD = FN(EL,drop_dims)(pw->p[i].FIELD, type, first, n);
 605                 if (!pw->p[i].FIELD)
 606                         goto error;
 607         }
 608
 609         return pw;
 610 error:
 611         FN(PW,free)(pw);
 612         return NULL;
 613 }
 614 #endif
 615
 616 #ifndef NO_INSERT_DIMS
 617 __isl_give PW *FN(PW,insert_dims)(__isl_take PW *pw, enum isl_dim_type type,
 618         unsigned first, unsigned n)
 619 {
 620         int i;
 621
 622         if (!pw)
 623                 return NULL;
 624         if (n == 0 && !isl_dim_is_named_or_nested(pw->dim, type))
 625                 return pw;
 626
 627         pw = FN(PW,cow)(pw);
 628         if (!pw)
 629                 return NULL;
 630
 631         pw->dim = isl_dim_insert(pw->dim, type, first, n);
 632         if (!pw->dim)
 633                 goto error;
 634
 635         for (i = 0; i < pw->n; ++i) {
 636                 pw->p[i].set = isl_set_insert(pw->p[i].set, type, first, n);
 637                 if (!pw->p[i].set)
 638                         goto error;
 639                 pw->p[i].FIELD = FN(EL,insert_dims)(pw->p[i].FIELD,
 640                                                                 type, first, n);
 641                 if (!pw->p[i].FIELD)
 642                         goto error;
 643         }
 644
 645         return pw;
 646 error:
 647         FN(PW,free)(pw);
 648         return NULL;
 649 }
 650 #endif
 651
 652 __isl_give PW *FN(PW,fix_dim)(__isl_take PW *pw,
 653         enum isl_dim_type type, unsigned pos, isl_int v)
 654 {
 655         int i;
 656
 657         if (!pw)
 658                 return NULL;
 659
 660         pw = FN(PW,cow)(pw);
 661         if (!pw)
 662                 return NULL;
 663         for (i = 0; i < pw->n; ++i) {
 664                 pw->p[i].set = isl_set_fix(pw->p[i].set, type, pos, v);
 665                 if (!pw->p[i].set)
 666                         goto error;
 667         }
 668
 669         return pw;
 670 error:
 671         FN(PW,free)(pw);
 672         return NULL;
 673 }
 674
 675 unsigned FN(PW,dim)(__isl_keep PW *pw, enum isl_dim_type type)
 676 {
 677         return pw ? isl_dim_size(pw->dim, type) : 0;
 678 }
 679
 680 __isl_give PW *FN(PW,split_dims)(__isl_take PW *pw,
 681         enum isl_dim_type type, unsigned first, unsigned n)
 682 {
 683         int i;
 684
 685         if (!pw)
 686                 return NULL;
 687         if (n == 0)
 688                 return pw;
 689
 690         pw = FN(PW,cow)(pw);
 691         if (!pw)
 692                 return NULL;
 693         if (!pw->dim)
 694                 goto error;
 695         for (i = 0; i < pw->n; ++i) {
 696                 pw->p[i].set = isl_set_split_dims(pw->p[i].set, type, first, n);
 697                 if (!pw->p[i].set)
 698                         goto error;
 699         }
 700
 701         return pw;
 702 error:
 703         FN(PW,free)(pw);
 704         return NULL;
 705 }
 706
 707 #ifndef NO_OPT
 708 /* Compute the maximal value attained by the piecewise quasipolynomial
 709  * on its domain or zero if the domain is empty.
 710  * In the worst case, the domain is scanned completely,
 711  * so the domain is assumed to be bounded.
 712  */
 713 __isl_give isl_qpolynomial *FN(PW,opt)(__isl_take PW *pw, int max)
 714 {
 715         int i;
 716         isl_qpolynomial *opt;
 717
 718         if (!pw)
 719                 return NULL;
 720
 721         if (pw->n == 0) {
 722                 isl_dim *dim = isl_dim_copy(pw->dim);
 723                 FN(PW,free)(pw);
 724                 return isl_qpolynomial_zero(dim);
 725         }
 726
 727         opt = FN(EL,opt_on_domain)(FN(EL,copy)(pw->p[0].FIELD),
 728                                         isl_set_copy(pw->p[0].set), max);
 729         for (i = 1; i < pw->n; ++i) {
 730                 isl_qpolynomial *opt_i;
 731                 opt_i = FN(EL,opt_on_domain)(FN(EL,copy)(pw->p[i].FIELD),
 732                                                 isl_set_copy(pw->p[i].set), max);
 733                 if (max)
 734                         opt = isl_qpolynomial_max_cst(opt, opt_i);
 735                 else
 736                         opt = isl_qpolynomial_min_cst(opt, opt_i);
 737         }
 738
 739         FN(PW,free)(pw);
 740         return opt;
 741 }
 742
 743 __isl_give isl_qpolynomial *FN(PW,max)(__isl_take PW *pw)
 744 {
 745         return FN(PW,opt)(pw, 1);
 746 }
 747
 748 __isl_give isl_qpolynomial *FN(PW,min)(__isl_take PW *pw)
 749 {
 750         return FN(PW,opt)(pw, 0);
 751 }
 752 #endif
 753
 754 __isl_give isl_dim *FN(PW,get_dim)(__isl_keep PW *pw)
 755 {
 756         return pw ? isl_dim_copy(pw->dim) : NULL;
 757 }
 758
 759 #ifndef NO_RESET_DIM
 760 __isl_give PW *FN(PW,reset_dim)(__isl_take PW *pw, __isl_take isl_dim *dim)
 761 {
 762         int i;
 763
 764         pw = FN(PW,cow)(pw);
 765         if (!pw || !dim)
 766                 goto error;
 767
 768         for (i = 0; i < pw->n; ++i) {
 769                 pw->p[i].set = isl_set_reset_dim(pw->p[i].set,
 770                                                  isl_dim_copy(dim));
 771                 if (!pw->p[i].set)
 772                         goto error;
 773                 pw->p[i].FIELD = FN(EL,reset_dim)(pw->p[i].FIELD,
 774                                                   isl_dim_copy(dim));
 775                 if (!pw->p[i].FIELD)
 776                         goto error;
 777         }
 778         isl_dim_free(pw->dim);
 779         pw->dim = dim;
 780
 781         return pw;
 782 error:
 783         isl_dim_free(dim);
 784         FN(PW,free)(pw);
 785         return NULL;
 786 }
 787 #endif
 788
 789 int FN(PW,has_equal_dim)(__isl_keep PW *pw1, __isl_keep PW *pw2)
 790 {
 791         if (!pw1 || !pw2)
 792                 return -1;
 793
 794         return isl_dim_equal(pw1->dim, pw2->dim);
 795 }
 796
 797 #ifndef NO_MORPH
 798 __isl_give PW *FN(PW,morph)(__isl_take PW *pw, __isl_take isl_morph *morph)
 799 {
 800         int i;
 801         isl_ctx *ctx;
 802
 803         if (!pw || !morph)
 804                 goto error;
 805
 806         ctx = isl_dim_get_ctx(pw->dim);
 807         isl_assert(ctx, isl_dim_equal(pw->dim, morph->dom->dim),
 808                 goto error);
 809
 810         pw = FN(PW,cow)(pw);
 811         if (!pw)
 812                 goto error;
 813         isl_dim_free(pw->dim);
 814         pw->dim = isl_dim_copy(morph->ran->dim);
 815         if (!pw->dim)
 816                 goto error;
 817
 818         for (i = 0; i < pw->n; ++i) {
 819                 pw->p[i].set = isl_morph_set(isl_morph_copy(morph), pw->p[i].set);
 820                 if (!pw->p[i].set)
 821                         goto error;
 822                 pw->p[i].FIELD = FN(EL,morph)(pw->p[i].FIELD,
 823                                                 isl_morph_copy(morph));
 824                 if (!pw->p[i].FIELD)
 825                         goto error;
 826         }
 827
 828         isl_morph_free(morph);
 829
 830         return pw;
 831 error:
 832         FN(PW,free)(pw);
 833         isl_morph_free(morph);
 834         return NULL;
 835 }
 836 #endif
 837
 838 int FN(PW,foreach_piece)(__isl_keep PW *pw,
 839         int (*fn)(__isl_take isl_set *set, __isl_take EL *el, void *user),
 840         void *user)
 841 {
 842         int i;
 843
 844         if (!pw)
 845                 return -1;
 846
 847         for (i = 0; i < pw->n; ++i)
 848                 if (fn(isl_set_copy(pw->p[i].set),
 849                                 FN(EL,copy)(pw->p[i].FIELD), user) < 0)
 850                         return -1;
 851
 852         return 0;
 853 }
 854
 855 #ifndef NO_LIFT
 856 static int any_divs(__isl_keep isl_set *set)
 857 {
 858         int i;
 859
 860         if (!set)
 861                 return -1;
 862
 863         for (i = 0; i < set->n; ++i)
 864                 if (set->p[i]->n_div > 0)
 865                         return 1;
 866
 867         return 0;
 868 }
 869
 870 static int foreach_lifted_subset(__isl_take isl_set *set, __isl_take EL *el,
 871         int (*fn)(__isl_take isl_set *set, __isl_take EL *el,
 872                     void *user), void *user)
 873 {
 874         int i;
 875
 876         if (!set || !el)
 877                 goto error;
 878
 879         for (i = 0; i < set->n; ++i) {
 880                 isl_set *lift;
 881                 EL *copy;
 882
 883                 lift = isl_set_from_basic_set(isl_basic_set_copy(set->p[i]));
 884                 lift = isl_set_lift(lift);
 885
 886                 copy = FN(EL,copy)(el);
 887                 copy = FN(EL,lift)(copy, isl_set_get_dim(lift));
 888
 889                 if (fn(lift, copy, user) < 0)
 890                         goto error;
 891         }
 892
 893         isl_set_free(set);
 894         FN(EL,free)(el);
 895
 896         return 0;
 897 error:
 898         isl_set_free(set);
 899         FN(EL,free)(el);
 900         return -1;
 901 }
 902
 903 int FN(PW,foreach_lifted_piece)(__isl_keep PW *pw,
 904         int (*fn)(__isl_take isl_set *set, __isl_take EL *el,
 905                     void *user), void *user)
 906 {
 907         int i;
 908
 909         if (!pw)
 910                 return -1;
 911
 912         for (i = 0; i < pw->n; ++i) {
 913                 isl_set *set;
 914                 EL *el;
 915
 916                 set = isl_set_copy(pw->p[i].set);
 917                 el = FN(EL,copy)(pw->p[i].FIELD);
 918                 if (!any_divs(set)) {
 919                         if (fn(set, el, user) < 0)
 920                                 return -1;
 921                         continue;
 922                 }
 923                 if (foreach_lifted_subset(set, el, fn, user) < 0)
 924                         return -1;
 925         }
 926
 927         return 0;
 928 }
 929 #endif
 930
 931 #ifndef NO_MOVE_DIMS
 932 __isl_give PW *FN(PW,move_dims)(__isl_take PW *pw,
 933         enum isl_dim_type dst_type, unsigned dst_pos,
 934         enum isl_dim_type src_type, unsigned src_pos, unsigned n)
 935 {
 936         int i;
 937
 938         pw = FN(PW,cow)(pw);
 939         if (!pw)
 940                 return NULL;
 941
 942         pw->dim = isl_dim_move(pw->dim, dst_type, dst_pos, src_type, src_pos, n);
 943         if (!pw->dim)
 944                 goto error;
 945
 946         for (i = 0; i < pw->n; ++i) {
 947                 pw->p[i].set = isl_set_move_dims(pw->p[i].set,
 948                                                 dst_type, dst_pos,
 949                                                 src_type, src_pos, n);
 950                 if (!pw->p[i].set)
 951                         goto error;
 952                 pw->p[i].FIELD = FN(EL,move_dims)(pw->p[i].FIELD,
 953                                         dst_type, dst_pos, src_type, src_pos, n);
 954                 if (!pw->p[i].FIELD)
 955                         goto error;
 956         }
 957
 958         return pw;
 959 error:
 960         FN(PW,free)(pw);
 961         return NULL;
 962 }
 963 #endif
 964
 965 #ifndef NO_REALIGN
 966 __isl_give PW *FN(PW,realign)(__isl_take PW *pw, __isl_take isl_reordering *exp)
 967 {
 968         int i;
 969
 970         pw = FN(PW,cow)(pw);
 971         if (!pw || !exp)
 972                 return NULL;
 973
 974         for (i = 0; i < pw->n; ++i) {
 975                 pw->p[i].set = isl_set_realign(pw->p[i].set,
 976                                                     isl_reordering_copy(exp));
 977                 if (!pw->p[i].set)
 978                         goto error;
 979                 pw->p[i].FIELD = FN(EL,realign)(pw->p[i].FIELD,
 980                                                     isl_reordering_copy(exp));
 981                 if (!pw->p[i].FIELD)
 982                         goto error;
 983         }
 984
 985         pw = FN(PW,reset_dim)(pw, isl_dim_copy(exp->dim));
 986
 987         isl_reordering_free(exp);
 988         return pw;
 989 error:
 990         isl_reordering_free(exp);
 991         FN(PW,free)(pw);
 992         return NULL;
 993 }
 994
 995 /* Align the parameters of "pw" to those of "model".
 996  */
 997 __isl_give PW *FN(PW,align_params)(__isl_take PW *pw, __isl_take isl_dim *model)
 998 {
 999         isl_ctx *ctx;
1000
1001         if (!pw || !model)
1002                 goto error;
1003
1004         ctx = isl_dim_get_ctx(model);
1005         if (!isl_dim_has_named_params(model))
1006                 isl_die(ctx, isl_error_invalid,
1007                         "model has unnamed parameters", goto error);
1008         if (!isl_dim_has_named_params(pw->dim))
1009                 isl_die(ctx, isl_error_invalid,
1010                         "input has unnamed parameters", goto error);
1011         if (!isl_dim_match(pw->dim, isl_dim_param, model, isl_dim_param)) {
1012                 isl_reordering *exp;
1013
1014                 model = isl_dim_drop(model, isl_dim_in,
1015                                         0, isl_dim_size(model, isl_dim_in));
1016                 model = isl_dim_drop(model, isl_dim_out,
1017                                         0, isl_dim_size(model, isl_dim_out));
1018                 exp = isl_parameter_alignment_reordering(pw->dim, model);
1019                 exp = isl_reordering_extend_dim(exp, FN(PW,get_dim)(pw));
1020                 pw = FN(PW,realign)(pw, exp);
1021         }
1022
1023         isl_dim_free(model);
1024         return pw;
1025 error:
1026         isl_dim_free(model);
1027         FN(PW,free)(pw);
1028         return NULL;
1029 }
1030 #endif
1031
1032 __isl_give PW *FN(PW,mul_isl_int)(__isl_take PW *pw, isl_int v)
1033 {
1034         int i;
1035
1036         if (isl_int_is_one(v))
1037                 return pw;
1038         if (pw && isl_int_is_zero(v)) {
1039                 PW *zero;
1040                 isl_dim *dim = FN(PW,get_dim)(pw);
1041 #ifdef HAS_TYPE
1042                 zero = FN(PW,ZERO)(dim, pw->type);
1043 #else
1044                 zero = FN(PW,ZERO)(dim);
1045 #endif
1046                 FN(PW,free)(pw);
1047                 return zero;
1048         }
1049         pw = FN(PW,cow)(pw);
1050         if (!pw)
1051                 return NULL;
1052         if (pw->n == 0)
1053                 return pw;
1054
1055 #ifdef HAS_TYPE
1056         if (isl_int_is_neg(v))
1057                 pw->type = isl_fold_type_negate(pw->type);
1058 #endif
1059         for (i = 0; i < pw->n; ++i) {
1060                 pw->p[i].FIELD = FN(EL,scale)(pw->p[i].FIELD, v);
1061                 if (!pw->p[i].FIELD)
1062                         goto error;
1063         }
1064
1065         return pw;
1066 error:
1067         FN(PW,free)(pw);
1068         return NULL;
1069 }