libgfortran/generated/product_i8.c

   1 /* Implementation of the PRODUCT intrinsic
   2    Copyright 2002, 2007 Free Software Foundation, Inc.
   3    Contributed by Paul Brook <paul@nowt.org>
   4
   5 This file is part of the GNU Fortran 95 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 2 of the License, or (at your option) any later version.
  11
  12 In addition to the permissions in the GNU General Public License, the
  13 Free Software Foundation gives you unlimited permission to link the
  14 compiled version of this file into combinations with other programs,
  15 and to distribute those combinations without any restriction coming
  16 from the use of this file.  (The General Public License restrictions
  17 do apply in other respects; for example, they cover modification of
  18 the file, and distribution when not linked into a combine
  19 executable.)
  20
  21 Libgfortran is distributed in the hope that it will be useful,
  22 but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 GNU General Public License for more details.
  25
  26 You should have received a copy of the GNU General Public
  27 License along with libgfortran; see the file COPYING.  If not,
  28 write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  29 Boston, MA 02110-1301, USA.  */
  30
  31 #include "libgfortran.h"
  32 #include <stdlib.h>
  33 #include <assert.h>
  34
  35
  36 #if defined (HAVE_GFC_INTEGER_8) && defined (HAVE_GFC_INTEGER_8)
  37
  38
  39 extern void product_i8 (gfc_array_i8 * const restrict,
  40         gfc_array_i8 * const restrict, const index_type * const restrict);
  41 export_proto(product_i8);
  42
  43 void
  44 product_i8 (gfc_array_i8 * const restrict retarray,
  45         gfc_array_i8 * const restrict array,
  46         const index_type * const restrict pdim)
  47 {
  48   index_type count[GFC_MAX_DIMENSIONS];
  49   index_type extent[GFC_MAX_DIMENSIONS];
  50   index_type sstride[GFC_MAX_DIMENSIONS];
  51   index_type dstride[GFC_MAX_DIMENSIONS];
  52   const GFC_INTEGER_8 * restrict base;
  53   GFC_INTEGER_8 * restrict dest;
  54   index_type rank;
  55   index_type n;
  56   index_type len;
  57   index_type delta;
  58   index_type dim;
  59   int continue_loop;
  60
  61   /* Make dim zero based to avoid confusion.  */
  62   dim = (*pdim) - 1;
  63   rank = GFC_DESCRIPTOR_RANK (array) - 1;
  64
  65   len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
  66   if (len < 0)
  67     len = 0;
  68   delta = array->dim[dim].stride;
  69
  70   for (n = 0; n < dim; n++)
  71     {
  72       sstride[n] = array->dim[n].stride;
  73       extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
  74
  75       if (extent[n] < 0)
  76         extent[n] = 0;
  77     }
  78   for (n = dim; n < rank; n++)
  79     {
  80       sstride[n] = array->dim[n + 1].stride;
  81       extent[n] =
  82         array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
  83
  84       if (extent[n] < 0)
  85         extent[n] = 0;
  86     }
  87
  88   if (retarray->data == NULL)
  89     {
  90       size_t alloc_size;
  91
  92       for (n = 0; n < rank; n++)
  93         {
  94           retarray->dim[n].lbound = 0;
  95           retarray->dim[n].ubound = extent[n]-1;
  96           if (n == 0)
  97             retarray->dim[n].stride = 1;
  98           else
  99             retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
 100         }
 101
 102       retarray->offset = 0;
 103       retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 104
 105       alloc_size = sizeof (GFC_INTEGER_8) * retarray->dim[rank-1].stride
 106                    * extent[rank-1];
 107
 108       if (alloc_size == 0)
 109         {
 110           /* Make sure we have a zero-sized array.  */
 111           retarray->dim[0].lbound = 0;
 112           retarray->dim[0].ubound = -1;
 113           return;
 114         }
 115       else
 116         retarray->data = internal_malloc_size (alloc_size);
 117     }
 118   else
 119     {
 120       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 121         runtime_error ("rank of return array incorrect in"
 122                        " PRODUCT intrinsic: is %ld, should be %ld",
 123                        (long int) (GFC_DESCRIPTOR_RANK (retarray)),
 124                        (long int) rank);
 125
 126       if (compile_options.bounds_check)
 127         {
 128           for (n=0; n < rank; n++)
 129             {
 130               index_type ret_extent;
 131
 132               ret_extent = retarray->dim[n].ubound + 1
 133                 - retarray->dim[n].lbound;
 134               if (extent[n] != ret_extent)
 135                 runtime_error ("Incorrect extent in return value of"
 136                                " PRODUCT intrinsic in dimension %ld:"
 137                                " is %ld, should be %ld", (long int) n + 1,
 138                                (long int) ret_extent, (long int) extent[n]);
 139             }
 140         }
 141     }
 142
 143   for (n = 0; n < rank; n++)
 144     {
 145       count[n] = 0;
 146       dstride[n] = retarray->dim[n].stride;
 147       if (extent[n] <= 0)
 148         len = 0;
 149     }
 150
 151   base = array->data;
 152   dest = retarray->data;
 153
 154   continue_loop = 1;
 155   while (continue_loop)
 156     {
 157       const GFC_INTEGER_8 * restrict src;
 158       GFC_INTEGER_8 result;
 159       src = base;
 160       {
 161
 162   result = 1;
 163         if (len <= 0)
 164           *dest = 1;
 165         else
 166           {
 167             for (n = 0; n < len; n++, src += delta)
 168               {
 169
 170   result *= *src;
 171           }
 172             *dest = result;
 173           }
 174       }
 175       /* Advance to the next element.  */
 176       count[0]++;
 177       base += sstride[0];
 178       dest += dstride[0];
 179       n = 0;
 180       while (count[n] == extent[n])
 181         {
 182           /* When we get to the end of a dimension, reset it and increment
 183              the next dimension.  */
 184           count[n] = 0;
 185           /* We could precalculate these products, but this is a less
 186              frequently used path so probably not worth it.  */
 187           base -= sstride[n] * extent[n];
 188           dest -= dstride[n] * extent[n];
 189           n++;
 190           if (n == rank)
 191             {
 192               /* Break out of the look.  */
 193               continue_loop = 0;
 194               break;
 195             }
 196           else
 197             {
 198               count[n]++;
 199               base += sstride[n];
 200               dest += dstride[n];
 201             }
 202         }
 203     }
 204 }
 205
 206
 207 extern void mproduct_i8 (gfc_array_i8 * const restrict,
 208         gfc_array_i8 * const restrict, const index_type * const restrict,
 209         gfc_array_l1 * const restrict);
 210 export_proto(mproduct_i8);
 211
 212 void
 213 mproduct_i8 (gfc_array_i8 * const restrict retarray,
 214         gfc_array_i8 * const restrict array,
 215         const index_type * const restrict pdim,
 216         gfc_array_l1 * const restrict mask)
 217 {
 218   index_type count[GFC_MAX_DIMENSIONS];
 219   index_type extent[GFC_MAX_DIMENSIONS];
 220   index_type sstride[GFC_MAX_DIMENSIONS];
 221   index_type dstride[GFC_MAX_DIMENSIONS];
 222   index_type mstride[GFC_MAX_DIMENSIONS];
 223   GFC_INTEGER_8 * restrict dest;
 224   const GFC_INTEGER_8 * restrict base;
 225   const GFC_LOGICAL_1 * restrict mbase;
 226   int rank;
 227   int dim;
 228   index_type n;
 229   index_type len;
 230   index_type delta;
 231   index_type mdelta;
 232   int mask_kind;
 233
 234   dim = (*pdim) - 1;
 235   rank = GFC_DESCRIPTOR_RANK (array) - 1;
 236
 237   len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
 238   if (len <= 0)
 239     return;
 240
 241   mbase = mask->data;
 242
 243   mask_kind = GFC_DESCRIPTOR_SIZE (mask);
 244
 245   if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
 246 #ifdef HAVE_GFC_LOGICAL_16
 247       || mask_kind == 16
 248 #endif
 249       )
 250     mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
 251   else
 252     runtime_error ("Funny sized logical array");
 253
 254   delta = array->dim[dim].stride;
 255   mdelta = mask->dim[dim].stride * mask_kind;
 256
 257   for (n = 0; n < dim; n++)
 258     {
 259       sstride[n] = array->dim[n].stride;
 260       mstride[n] = mask->dim[n].stride * mask_kind;
 261       extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
 262
 263       if (extent[n] < 0)
 264         extent[n] = 0;
 265
 266     }
 267   for (n = dim; n < rank; n++)
 268     {
 269       sstride[n] = array->dim[n + 1].stride;
 270       mstride[n] = mask->dim[n + 1].stride * mask_kind;
 271       extent[n] =
 272         array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
 273
 274       if (extent[n] < 0)
 275         extent[n] = 0;
 276     }
 277
 278   if (retarray->data == NULL)
 279     {
 280       size_t alloc_size;
 281
 282       for (n = 0; n < rank; n++)
 283         {
 284           retarray->dim[n].lbound = 0;
 285           retarray->dim[n].ubound = extent[n]-1;
 286           if (n == 0)
 287             retarray->dim[n].stride = 1;
 288           else
 289             retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
 290         }
 291
 292       alloc_size = sizeof (GFC_INTEGER_8) * retarray->dim[rank-1].stride
 293                    * extent[rank-1];
 294
 295       retarray->offset = 0;
 296       retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 297
 298       if (alloc_size == 0)
 299         {
 300           /* Make sure we have a zero-sized array.  */
 301           retarray->dim[0].lbound = 0;
 302           retarray->dim[0].ubound = -1;
 303           return;
 304         }
 305       else
 306         retarray->data = internal_malloc_size (alloc_size);
 307
 308     }
 309   else
 310     {
 311       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 312         runtime_error ("rank of return array incorrect in PRODUCT intrinsic");
 313
 314       if (compile_options.bounds_check)
 315         {
 316           for (n=0; n < rank; n++)
 317             {
 318               index_type ret_extent;
 319
 320               ret_extent = retarray->dim[n].ubound + 1
 321                 - retarray->dim[n].lbound;
 322               if (extent[n] != ret_extent)
 323                 runtime_error ("Incorrect extent in return value of"
 324                                " PRODUCT intrinsic in dimension %ld:"
 325                                " is %ld, should be %ld", (long int) n + 1,
 326                                (long int) ret_extent, (long int) extent[n]);
 327             }
 328           for (n=0; n<= rank; n++)
 329             {
 330               index_type mask_extent, array_extent;
 331
 332               array_extent = array->dim[n].ubound + 1 - array->dim[n].lbound;
 333               mask_extent = mask->dim[n].ubound + 1 - mask->dim[n].lbound;
 334               if (array_extent != mask_extent)
 335                 runtime_error ("Incorrect extent in MASK argument of"
 336                                " PRODUCT intrinsic in dimension %ld:"
 337                                " is %ld, should be %ld", (long int) n + 1,
 338                                (long int) mask_extent, (long int) array_extent);
 339             }
 340         }
 341     }
 342
 343   for (n = 0; n < rank; n++)
 344     {
 345       count[n] = 0;
 346       dstride[n] = retarray->dim[n].stride;
 347       if (extent[n] <= 0)
 348         return;
 349     }
 350
 351   dest = retarray->data;
 352   base = array->data;
 353
 354   while (base)
 355     {
 356       const GFC_INTEGER_8 * restrict src;
 357       const GFC_LOGICAL_1 * restrict msrc;
 358       GFC_INTEGER_8 result;
 359       src = base;
 360       msrc = mbase;
 361       {
 362
 363   result = 1;
 364         if (len <= 0)
 365           *dest = 1;
 366         else
 367           {
 368             for (n = 0; n < len; n++, src += delta, msrc += mdelta)
 369               {
 370
 371   if (*msrc)
 372     result *= *src;
 373               }
 374             *dest = result;
 375           }
 376       }
 377       /* Advance to the next element.  */
 378       count[0]++;
 379       base += sstride[0];
 380       mbase += mstride[0];
 381       dest += dstride[0];
 382       n = 0;
 383       while (count[n] == extent[n])
 384         {
 385           /* When we get to the end of a dimension, reset it and increment
 386              the next dimension.  */
 387           count[n] = 0;
 388           /* We could precalculate these products, but this is a less
 389              frequently used path so probably not worth it.  */
 390           base -= sstride[n] * extent[n];
 391           mbase -= mstride[n] * extent[n];
 392           dest -= dstride[n] * extent[n];
 393           n++;
 394           if (n == rank)
 395             {
 396               /* Break out of the look.  */
 397               base = NULL;
 398               break;
 399             }
 400           else
 401             {
 402               count[n]++;
 403               base += sstride[n];
 404               mbase += mstride[n];
 405               dest += dstride[n];
 406             }
 407         }
 408     }
 409 }
 410
 411
 412 extern void sproduct_i8 (gfc_array_i8 * const restrict,
 413         gfc_array_i8 * const restrict, const index_type * const restrict,
 414         GFC_LOGICAL_4 *);
 415 export_proto(sproduct_i8);
 416
 417 void
 418 sproduct_i8 (gfc_array_i8 * const restrict retarray,
 419         gfc_array_i8 * const restrict array,
 420         const index_type * const restrict pdim,
 421         GFC_LOGICAL_4 * mask)
 422 {
 423   index_type count[GFC_MAX_DIMENSIONS];
 424   index_type extent[GFC_MAX_DIMENSIONS];
 425   index_type sstride[GFC_MAX_DIMENSIONS];
 426   index_type dstride[GFC_MAX_DIMENSIONS];
 427   GFC_INTEGER_8 * restrict dest;
 428   index_type rank;
 429   index_type n;
 430   index_type dim;
 431
 432
 433   if (*mask)
 434     {
 435       product_i8 (retarray, array, pdim);
 436       return;
 437     }
 438   /* Make dim zero based to avoid confusion.  */
 439   dim = (*pdim) - 1;
 440   rank = GFC_DESCRIPTOR_RANK (array) - 1;
 441
 442   for (n = 0; n < dim; n++)
 443     {
 444       sstride[n] = array->dim[n].stride;
 445       extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
 446
 447       if (extent[n] <= 0)
 448         extent[n] = 0;
 449     }
 450
 451   for (n = dim; n < rank; n++)
 452     {
 453       sstride[n] = array->dim[n + 1].stride;
 454       extent[n] =
 455         array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
 456
 457       if (extent[n] <= 0)
 458         extent[n] = 0;
 459     }
 460
 461   if (retarray->data == NULL)
 462     {
 463       size_t alloc_size;
 464
 465       for (n = 0; n < rank; n++)
 466         {
 467           retarray->dim[n].lbound = 0;
 468           retarray->dim[n].ubound = extent[n]-1;
 469           if (n == 0)
 470             retarray->dim[n].stride = 1;
 471           else
 472             retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
 473         }
 474
 475       retarray->offset = 0;
 476       retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 477
 478       alloc_size = sizeof (GFC_INTEGER_8) * retarray->dim[rank-1].stride
 479                    * extent[rank-1];
 480
 481       if (alloc_size == 0)
 482         {
 483           /* Make sure we have a zero-sized array.  */
 484           retarray->dim[0].lbound = 0;
 485           retarray->dim[0].ubound = -1;
 486           return;
 487         }
 488       else
 489         retarray->data = internal_malloc_size (alloc_size);
 490     }
 491   else
 492     {
 493       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 494         runtime_error ("rank of return array incorrect in"
 495                        " PRODUCT intrinsic: is %ld, should be %ld",
 496                        (long int) (GFC_DESCRIPTOR_RANK (retarray)),
 497                        (long int) rank);
 498
 499       if (compile_options.bounds_check)
 500         {
 501           for (n=0; n < rank; n++)
 502             {
 503               index_type ret_extent;
 504
 505               ret_extent = retarray->dim[n].ubound + 1
 506                 - retarray->dim[n].lbound;
 507               if (extent[n] != ret_extent)
 508                 runtime_error ("Incorrect extent in return value of"
 509                                " PRODUCT intrinsic in dimension %ld:"
 510                                " is %ld, should be %ld", (long int) n + 1,
 511                                (long int) ret_extent, (long int) extent[n]);
 512             }
 513         }
 514     }
 515
 516   for (n = 0; n < rank; n++)
 517     {
 518       count[n] = 0;
 519       dstride[n] = retarray->dim[n].stride;
 520     }
 521
 522   dest = retarray->data;
 523
 524   while(1)
 525     {
 526       *dest = 1;
 527       count[0]++;
 528       dest += dstride[0];
 529       n = 0;
 530       while (count[n] == extent[n])
 531         {
 532           /* When we get to the end of a dimension, reset it and increment
 533              the next dimension.  */
 534           count[n] = 0;
 535           /* We could precalculate these products, but this is a less
 536              frequently used path so probably not worth it.  */
 537           dest -= dstride[n] * extent[n];
 538           n++;
 539           if (n == rank)
 540             return;
 541           else
 542             {
 543               count[n]++;
 544               dest += dstride[n];
 545             }
 546         }
 547     }
 548 }
 549
 550 #endif