libgfortran/generated/maxloc1_4_i4.c

   1 /* Implementation of the MAXLOC intrinsic
   2    Copyright (C) 2002-2018 Free Software Foundation, Inc.
   3    Contributed by Paul Brook <paul@nowt.org>
   4
   5 This file is part of the GNU Fortran runtime library (libgfortran).
   6
   7 Libgfortran is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU General Public
   9 License as published by the Free Software Foundation; either
  10 version 3 of the License, or (at your option) any later version.
  11
  12 Libgfortran is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 #include "libgfortran.h"
  27 #include <assert.h>
  28
  29
  30 #if defined (HAVE_GFC_INTEGER_4) && defined (HAVE_GFC_INTEGER_4)
  31
  32 #define HAVE_BACK_ARG 1
  33
  34
  35 extern void maxloc1_4_i4 (gfc_array_i4 * const restrict,
  36         gfc_array_i4 * const restrict, const index_type * const restrict, GFC_LOGICAL_4 back);
  37 export_proto(maxloc1_4_i4);
  38
  39 void
  40 maxloc1_4_i4 (gfc_array_i4 * const restrict retarray,
  41         gfc_array_i4 * const restrict array,
  42         const index_type * const restrict pdim, GFC_LOGICAL_4 back)
  43 {
  44   index_type count[GFC_MAX_DIMENSIONS];
  45   index_type extent[GFC_MAX_DIMENSIONS];
  46   index_type sstride[GFC_MAX_DIMENSIONS];
  47   index_type dstride[GFC_MAX_DIMENSIONS];
  48   const GFC_INTEGER_4 * restrict base;
  49   GFC_INTEGER_4 * restrict dest;
  50   index_type rank;
  51   index_type n;
  52   index_type len;
  53   index_type delta;
  54   index_type dim;
  55   int continue_loop;
  56
  57 #ifdef HAVE_BACK_ARG
  58   assert(back == 0);
  59 #endif
  60
  61   /* Make dim zero based to avoid confusion.  */
  62   rank = GFC_DESCRIPTOR_RANK (array) - 1;
  63   dim = (*pdim) - 1;
  64
  65   if (unlikely (dim < 0 || dim > rank))
  66     {
  67       runtime_error ("Dim argument incorrect in MAXLOC intrinsic: "
  68                      "is %ld, should be between 1 and %ld",
  69                      (long int) dim + 1, (long int) rank + 1);
  70     }
  71
  72   len = GFC_DESCRIPTOR_EXTENT(array,dim);
  73   if (len < 0)
  74     len = 0;
  75   delta = GFC_DESCRIPTOR_STRIDE(array,dim);
  76
  77   for (n = 0; n < dim; n++)
  78     {
  79       sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
  80       extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
  81
  82       if (extent[n] < 0)
  83         extent[n] = 0;
  84     }
  85   for (n = dim; n < rank; n++)
  86     {
  87       sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);
  88       extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
  89
  90       if (extent[n] < 0)
  91         extent[n] = 0;
  92     }
  93
  94   if (retarray->base_addr == NULL)
  95     {
  96       size_t alloc_size, str;
  97
  98       for (n = 0; n < rank; n++)
  99         {
 100           if (n == 0)
 101             str = 1;
 102           else
 103             str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
 104
 105           GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
 106
 107         }
 108
 109       retarray->offset = 0;
 110       GFC_DTYPE_COPY_SETRANK(retarray,array,rank);
 111
 112       alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
 113
 114       retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_4));
 115       if (alloc_size == 0)
 116         {
 117           /* Make sure we have a zero-sized array.  */
 118           GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
 119           return;
 120
 121         }
 122     }
 123   else
 124     {
 125       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 126         runtime_error ("rank of return array incorrect in"
 127                        " MAXLOC intrinsic: is %ld, should be %ld",
 128                        (long int) (GFC_DESCRIPTOR_RANK (retarray)),
 129                        (long int) rank);
 130
 131       if (unlikely (compile_options.bounds_check))
 132         bounds_ifunction_return ((array_t *) retarray, extent,
 133                                  "return value", "MAXLOC");
 134     }
 135
 136   for (n = 0; n < rank; n++)
 137     {
 138       count[n] = 0;
 139       dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
 140       if (extent[n] <= 0)
 141         return;
 142     }
 143
 144   base = array->base_addr;
 145   dest = retarray->base_addr;
 146
 147   continue_loop = 1;
 148   while (continue_loop)
 149     {
 150       const GFC_INTEGER_4 * restrict src;
 151       GFC_INTEGER_4 result;
 152       src = base;
 153       {
 154
 155         GFC_INTEGER_4 maxval;
 156 #if defined (GFC_INTEGER_4_INFINITY)
 157         maxval = -GFC_INTEGER_4_INFINITY;
 158 #else
 159         maxval = (-GFC_INTEGER_4_HUGE-1);
 160 #endif
 161         result = 1;
 162         if (len <= 0)
 163           *dest = 0;
 164         else
 165           {
 166             for (n = 0; n < len; n++, src += delta)
 167               {
 168
 169 #if defined (GFC_INTEGER_4_QUIET_NAN)
 170                 if (*src >= maxval)
 171                   {
 172                     maxval = *src;
 173                     result = (GFC_INTEGER_4)n + 1;
 174                     break;
 175                   }
 176               }
 177             for (; n < len; n++, src += delta)
 178               {
 179 #endif
 180                 if (*src > maxval)
 181                   {
 182                     maxval = *src;
 183                     result = (GFC_INTEGER_4)n + 1;
 184                   }
 185               }
 186
 187             *dest = result;
 188           }
 189       }
 190       /* Advance to the next element.  */
 191       count[0]++;
 192       base += sstride[0];
 193       dest += dstride[0];
 194       n = 0;
 195       while (count[n] == extent[n])
 196         {
 197           /* When we get to the end of a dimension, reset it and increment
 198              the next dimension.  */
 199           count[n] = 0;
 200           /* We could precalculate these products, but this is a less
 201              frequently used path so probably not worth it.  */
 202           base -= sstride[n] * extent[n];
 203           dest -= dstride[n] * extent[n];
 204           n++;
 205           if (n >= rank)
 206             {
 207               /* Break out of the loop.  */
 208               continue_loop = 0;
 209               break;
 210             }
 211           else
 212             {
 213               count[n]++;
 214               base += sstride[n];
 215               dest += dstride[n];
 216             }
 217         }
 218     }
 219 }
 220
 221
 222 extern void mmaxloc1_4_i4 (gfc_array_i4 * const restrict,
 223         gfc_array_i4 * const restrict, const index_type * const restrict,
 224         gfc_array_l1 * const restrict, GFC_LOGICAL_4 back);
 225 export_proto(mmaxloc1_4_i4);
 226
 227 void
 228 mmaxloc1_4_i4 (gfc_array_i4 * const restrict retarray,
 229         gfc_array_i4 * const restrict array,
 230         const index_type * const restrict pdim,
 231         gfc_array_l1 * const restrict mask, GFC_LOGICAL_4 back)
 232 {
 233   index_type count[GFC_MAX_DIMENSIONS];
 234   index_type extent[GFC_MAX_DIMENSIONS];
 235   index_type sstride[GFC_MAX_DIMENSIONS];
 236   index_type dstride[GFC_MAX_DIMENSIONS];
 237   index_type mstride[GFC_MAX_DIMENSIONS];
 238   GFC_INTEGER_4 * restrict dest;
 239   const GFC_INTEGER_4 * restrict base;
 240   const GFC_LOGICAL_1 * restrict mbase;
 241   index_type rank;
 242   index_type dim;
 243   index_type n;
 244   index_type len;
 245   index_type delta;
 246   index_type mdelta;
 247   int mask_kind;
 248
 249 #ifdef HAVE_BACK_ARG
 250   assert (back == 0);
 251 #endif
 252   dim = (*pdim) - 1;
 253   rank = GFC_DESCRIPTOR_RANK (array) - 1;
 254
 255
 256   if (unlikely (dim < 0 || dim > rank))
 257     {
 258       runtime_error ("Dim argument incorrect in MAXLOC intrinsic: "
 259                      "is %ld, should be between 1 and %ld",
 260                      (long int) dim + 1, (long int) rank + 1);
 261     }
 262
 263   len = GFC_DESCRIPTOR_EXTENT(array,dim);
 264   if (len <= 0)
 265     return;
 266
 267   mbase = mask->base_addr;
 268
 269   mask_kind = GFC_DESCRIPTOR_SIZE (mask);
 270
 271   if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
 272 #ifdef HAVE_GFC_LOGICAL_16
 273       || mask_kind == 16
 274 #endif
 275       )
 276     mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
 277   else
 278     runtime_error ("Funny sized logical array");
 279
 280   delta = GFC_DESCRIPTOR_STRIDE(array,dim);
 281   mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
 282
 283   for (n = 0; n < dim; n++)
 284     {
 285       sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
 286       mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
 287       extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
 288
 289       if (extent[n] < 0)
 290         extent[n] = 0;
 291
 292     }
 293   for (n = dim; n < rank; n++)
 294     {
 295       sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1);
 296       mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
 297       extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
 298
 299       if (extent[n] < 0)
 300         extent[n] = 0;
 301     }
 302
 303   if (retarray->base_addr == NULL)
 304     {
 305       size_t alloc_size, str;
 306
 307       for (n = 0; n < rank; n++)
 308         {
 309           if (n == 0)
 310             str = 1;
 311           else
 312             str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
 313
 314           GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
 315
 316         }
 317
 318       alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
 319
 320       retarray->offset = 0;
 321       GFC_DTYPE_COPY_SETRANK(retarray,array,rank);
 322
 323       if (alloc_size == 0)
 324         {
 325           /* Make sure we have a zero-sized array.  */
 326           GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
 327           return;
 328         }
 329       else
 330         retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_4));
 331
 332     }
 333   else
 334     {
 335       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 336         runtime_error ("rank of return array incorrect in MAXLOC intrinsic");
 337
 338       if (unlikely (compile_options.bounds_check))
 339         {
 340           bounds_ifunction_return ((array_t *) retarray, extent,
 341                                    "return value", "MAXLOC");
 342           bounds_equal_extents ((array_t *) mask, (array_t *) array,
 343                                 "MASK argument", "MAXLOC");
 344         }
 345     }
 346
 347   for (n = 0; n < rank; n++)
 348     {
 349       count[n] = 0;
 350       dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
 351       if (extent[n] <= 0)
 352         return;
 353     }
 354
 355   dest = retarray->base_addr;
 356   base = array->base_addr;
 357
 358   while (base)
 359     {
 360       const GFC_INTEGER_4 * restrict src;
 361       const GFC_LOGICAL_1 * restrict msrc;
 362       GFC_INTEGER_4 result;
 363       src = base;
 364       msrc = mbase;
 365       {
 366
 367         GFC_INTEGER_4 maxval;
 368 #if defined (GFC_INTEGER_4_INFINITY)
 369         maxval = -GFC_INTEGER_4_INFINITY;
 370 #else
 371         maxval = (-GFC_INTEGER_4_HUGE-1);
 372 #endif
 373 #if defined (GFC_INTEGER_4_QUIET_NAN)
 374         GFC_INTEGER_4 result2 = 0;
 375 #endif
 376         result = 0;
 377         for (n = 0; n < len; n++, src += delta, msrc += mdelta)
 378           {
 379
 380                 if (*msrc)
 381                   {
 382 #if defined (GFC_INTEGER_4_QUIET_NAN)
 383                     if (!result2)
 384                       result2 = (GFC_INTEGER_4)n + 1;
 385                     if (*src >= maxval)
 386 #endif
 387                       {
 388                         maxval = *src;
 389                         result = (GFC_INTEGER_4)n + 1;
 390                         break;
 391                       }
 392                   }
 393               }
 394 #if defined (GFC_INTEGER_4_QUIET_NAN)
 395             if (unlikely (n >= len))
 396               result = result2;
 397             else
 398 #endif
 399             for (; n < len; n++, src += delta, msrc += mdelta)
 400               {
 401                 if (*msrc && *src > maxval)
 402                   {
 403                     maxval = *src;
 404                     result = (GFC_INTEGER_4)n + 1;
 405                   }
 406           }
 407         *dest = result;
 408       }
 409       /* Advance to the next element.  */
 410       count[0]++;
 411       base += sstride[0];
 412       mbase += mstride[0];
 413       dest += dstride[0];
 414       n = 0;
 415       while (count[n] == extent[n])
 416         {
 417           /* When we get to the end of a dimension, reset it and increment
 418              the next dimension.  */
 419           count[n] = 0;
 420           /* We could precalculate these products, but this is a less
 421              frequently used path so probably not worth it.  */
 422           base -= sstride[n] * extent[n];
 423           mbase -= mstride[n] * extent[n];
 424           dest -= dstride[n] * extent[n];
 425           n++;
 426           if (n >= rank)
 427             {
 428               /* Break out of the loop.  */
 429               base = NULL;
 430               break;
 431             }
 432           else
 433             {
 434               count[n]++;
 435               base += sstride[n];
 436               mbase += mstride[n];
 437               dest += dstride[n];
 438             }
 439         }
 440     }
 441 }
 442
 443
 444 extern void smaxloc1_4_i4 (gfc_array_i4 * const restrict,
 445         gfc_array_i4 * const restrict, const index_type * const restrict,
 446         GFC_LOGICAL_4 *, GFC_LOGICAL_4 back);
 447 export_proto(smaxloc1_4_i4);
 448
 449 void
 450 smaxloc1_4_i4 (gfc_array_i4 * const restrict retarray,
 451         gfc_array_i4 * const restrict array,
 452         const index_type * const restrict pdim,
 453         GFC_LOGICAL_4 * mask, GFC_LOGICAL_4 back)
 454 {
 455   index_type count[GFC_MAX_DIMENSIONS];
 456   index_type extent[GFC_MAX_DIMENSIONS];
 457   index_type dstride[GFC_MAX_DIMENSIONS];
 458   GFC_INTEGER_4 * restrict dest;
 459   index_type rank;
 460   index_type n;
 461   index_type dim;
 462
 463
 464   if (*mask)
 465     {
 466 #ifdef HAVE_BACK_ARG
 467       maxloc1_4_i4 (retarray, array, pdim, back);
 468 #else
 469       maxloc1_4_i4 (retarray, array, pdim);
 470 #endif
 471       return;
 472     }
 473   /* Make dim zero based to avoid confusion.  */
 474   dim = (*pdim) - 1;
 475   rank = GFC_DESCRIPTOR_RANK (array) - 1;
 476
 477   if (unlikely (dim < 0 || dim > rank))
 478     {
 479       runtime_error ("Dim argument incorrect in MAXLOC intrinsic: "
 480                      "is %ld, should be between 1 and %ld",
 481                      (long int) dim + 1, (long int) rank + 1);
 482     }
 483
 484   for (n = 0; n < dim; n++)
 485     {
 486       extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
 487
 488       if (extent[n] <= 0)
 489         extent[n] = 0;
 490     }
 491
 492   for (n = dim; n < rank; n++)
 493     {
 494       extent[n] =
 495         GFC_DESCRIPTOR_EXTENT(array,n + 1);
 496
 497       if (extent[n] <= 0)
 498         extent[n] = 0;
 499     }
 500
 501   if (retarray->base_addr == NULL)
 502     {
 503       size_t alloc_size, str;
 504
 505       for (n = 0; n < rank; n++)
 506         {
 507           if (n == 0)
 508             str = 1;
 509           else
 510             str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
 511
 512           GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
 513
 514         }
 515
 516       retarray->offset = 0;
 517       GFC_DTYPE_COPY_SETRANK(retarray,array,rank);
 518
 519       alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
 520
 521       if (alloc_size == 0)
 522         {
 523           /* Make sure we have a zero-sized array.  */
 524           GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
 525           return;
 526         }
 527       else
 528         retarray->base_addr = xmallocarray (alloc_size, sizeof (GFC_INTEGER_4));
 529     }
 530   else
 531     {
 532       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 533         runtime_error ("rank of return array incorrect in"
 534                        " MAXLOC intrinsic: is %ld, should be %ld",
 535                        (long int) (GFC_DESCRIPTOR_RANK (retarray)),
 536                        (long int) rank);
 537
 538       if (unlikely (compile_options.bounds_check))
 539         {
 540           for (n=0; n < rank; n++)
 541             {
 542               index_type ret_extent;
 543
 544               ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
 545               if (extent[n] != ret_extent)
 546                 runtime_error ("Incorrect extent in return value of"
 547                                " MAXLOC intrinsic in dimension %ld:"
 548                                " is %ld, should be %ld", (long int) n + 1,
 549                                (long int) ret_extent, (long int) extent[n]);
 550             }
 551         }
 552     }
 553
 554   for (n = 0; n < rank; n++)
 555     {
 556       count[n] = 0;
 557       dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
 558     }
 559
 560   dest = retarray->base_addr;
 561
 562   while(1)
 563     {
 564       *dest = 0;
 565       count[0]++;
 566       dest += dstride[0];
 567       n = 0;
 568       while (count[n] == extent[n])
 569         {
 570           /* When we get to the end of a dimension, reset it and increment
 571              the next dimension.  */
 572           count[n] = 0;
 573           /* We could precalculate these products, but this is a less
 574              frequently used path so probably not worth it.  */
 575           dest -= dstride[n] * extent[n];
 576           n++;
 577           if (n >= rank)
 578             return;
 579           else
 580             {
 581               count[n]++;
 582               dest += dstride[n];
 583             }
 584         }
 585     }
 586 }
 587
 588 #endif