libgfortran/generated/minval_i4.c

   1 /* Implementation of the MINVAL 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_4) && defined (HAVE_GFC_INTEGER_4)
  37
  38
  39 extern void minval_i4 (gfc_array_i4 * const restrict,
  40         gfc_array_i4 * const restrict, const index_type * const restrict);
  41 export_proto(minval_i4);
  42
  43 void
  44 minval_i4 (gfc_array_i4 * const restrict retarray,
  45         gfc_array_i4 * 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_4 * restrict base;
  53   GFC_INTEGER_4 * restrict dest;
  54   index_type rank;
  55   index_type n;
  56   index_type len;
  57   index_type delta;
  58   index_type dim;
  59
  60   /* Make dim zero based to avoid confusion.  */
  61   dim = (*pdim) - 1;
  62   rank = GFC_DESCRIPTOR_RANK (array) - 1;
  63
  64   len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
  65   delta = array->dim[dim].stride;
  66
  67   for (n = 0; n < dim; n++)
  68     {
  69       sstride[n] = array->dim[n].stride;
  70       extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
  71
  72       if (extent[n] < 0)
  73         extent[n] = 0;
  74     }
  75   for (n = dim; n < rank; n++)
  76     {
  77       sstride[n] = array->dim[n + 1].stride;
  78       extent[n] =
  79         array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
  80
  81       if (extent[n] < 0)
  82         extent[n] = 0;
  83     }
  84
  85   if (retarray->data == NULL)
  86     {
  87       size_t alloc_size;
  88
  89       for (n = 0; n < rank; n++)
  90         {
  91           retarray->dim[n].lbound = 0;
  92           retarray->dim[n].ubound = extent[n]-1;
  93           if (n == 0)
  94             retarray->dim[n].stride = 1;
  95           else
  96             retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
  97         }
  98
  99       retarray->offset = 0;
 100       retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 101
 102       alloc_size = sizeof (GFC_INTEGER_4) * retarray->dim[rank-1].stride
 103                    * extent[rank-1];
 104
 105       if (alloc_size == 0)
 106         {
 107           /* Make sure we have a zero-sized array.  */
 108           retarray->dim[0].lbound = 0;
 109           retarray->dim[0].ubound = -1;
 110           return;
 111         }
 112       else
 113         retarray->data = internal_malloc_size (alloc_size);
 114     }
 115   else
 116     {
 117       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 118         runtime_error ("rank of return array incorrect in"
 119                        " MINVAL intrinsic: is %ld, should be %ld",
 120                        (long int) (GFC_DESCRIPTOR_RANK (retarray)),
 121                        (long int) rank);
 122
 123       if (compile_options.bounds_check)
 124         {
 125           for (n=0; n < rank; n++)
 126             {
 127               index_type ret_extent;
 128
 129               ret_extent = retarray->dim[n].ubound + 1
 130                 - retarray->dim[n].lbound;
 131               if (extent[n] != ret_extent)
 132                 runtime_error ("Incorrect extent in return value of"
 133                                " MINVAL intrinsic in dimension %ld:"
 134                                " is %ld, should be %ld", (long int) n + 1,
 135                                (long int) ret_extent, (long int) extent[n]);
 136             }
 137         }
 138     }
 139
 140   for (n = 0; n < rank; n++)
 141     {
 142       count[n] = 0;
 143       dstride[n] = retarray->dim[n].stride;
 144       if (extent[n] <= 0)
 145         len = 0;
 146     }
 147
 148   base = array->data;
 149   dest = retarray->data;
 150
 151   while (base)
 152     {
 153       const GFC_INTEGER_4 * restrict src;
 154       GFC_INTEGER_4 result;
 155       src = base;
 156       {
 157
 158   result = GFC_INTEGER_4_HUGE;
 159         if (len <= 0)
 160           *dest = GFC_INTEGER_4_HUGE;
 161         else
 162           {
 163             for (n = 0; n < len; n++, src += delta)
 164               {
 165
 166   if (*src < result)
 167     result = *src;
 168           }
 169             *dest = result;
 170           }
 171       }
 172       /* Advance to the next element.  */
 173       count[0]++;
 174       base += sstride[0];
 175       dest += dstride[0];
 176       n = 0;
 177       while (count[n] == extent[n])
 178         {
 179           /* When we get to the end of a dimension, reset it and increment
 180              the next dimension.  */
 181           count[n] = 0;
 182           /* We could precalculate these products, but this is a less
 183              frequently used path so probably not worth it.  */
 184           base -= sstride[n] * extent[n];
 185           dest -= dstride[n] * extent[n];
 186           n++;
 187           if (n == rank)
 188             {
 189               /* Break out of the look.  */
 190               base = NULL;
 191               break;
 192             }
 193           else
 194             {
 195               count[n]++;
 196               base += sstride[n];
 197               dest += dstride[n];
 198             }
 199         }
 200     }
 201 }
 202
 203
 204 extern void mminval_i4 (gfc_array_i4 * const restrict,
 205         gfc_array_i4 * const restrict, const index_type * const restrict,
 206         gfc_array_l1 * const restrict);
 207 export_proto(mminval_i4);
 208
 209 void
 210 mminval_i4 (gfc_array_i4 * const restrict retarray,
 211         gfc_array_i4 * const restrict array,
 212         const index_type * const restrict pdim,
 213         gfc_array_l1 * const restrict mask)
 214 {
 215   index_type count[GFC_MAX_DIMENSIONS];
 216   index_type extent[GFC_MAX_DIMENSIONS];
 217   index_type sstride[GFC_MAX_DIMENSIONS];
 218   index_type dstride[GFC_MAX_DIMENSIONS];
 219   index_type mstride[GFC_MAX_DIMENSIONS];
 220   GFC_INTEGER_4 * restrict dest;
 221   const GFC_INTEGER_4 * restrict base;
 222   const GFC_LOGICAL_1 * restrict mbase;
 223   int rank;
 224   int dim;
 225   index_type n;
 226   index_type len;
 227   index_type delta;
 228   index_type mdelta;
 229   int mask_kind;
 230
 231   dim = (*pdim) - 1;
 232   rank = GFC_DESCRIPTOR_RANK (array) - 1;
 233
 234   len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
 235   if (len <= 0)
 236     return;
 237
 238   mbase = mask->data;
 239
 240   mask_kind = GFC_DESCRIPTOR_SIZE (mask);
 241
 242   if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
 243 #ifdef HAVE_GFC_LOGICAL_16
 244       || mask_kind == 16
 245 #endif
 246       )
 247     mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
 248   else
 249     runtime_error ("Funny sized logical array");
 250
 251   delta = array->dim[dim].stride;
 252   mdelta = mask->dim[dim].stride * mask_kind;
 253
 254   for (n = 0; n < dim; n++)
 255     {
 256       sstride[n] = array->dim[n].stride;
 257       mstride[n] = mask->dim[n].stride * mask_kind;
 258       extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
 259
 260       if (extent[n] < 0)
 261         extent[n] = 0;
 262
 263     }
 264   for (n = dim; n < rank; n++)
 265     {
 266       sstride[n] = array->dim[n + 1].stride;
 267       mstride[n] = mask->dim[n + 1].stride * mask_kind;
 268       extent[n] =
 269         array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
 270
 271       if (extent[n] < 0)
 272         extent[n] = 0;
 273     }
 274
 275   if (retarray->data == NULL)
 276     {
 277       size_t alloc_size;
 278
 279       for (n = 0; n < rank; n++)
 280         {
 281           retarray->dim[n].lbound = 0;
 282           retarray->dim[n].ubound = extent[n]-1;
 283           if (n == 0)
 284             retarray->dim[n].stride = 1;
 285           else
 286             retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
 287         }
 288
 289       alloc_size = sizeof (GFC_INTEGER_4) * retarray->dim[rank-1].stride
 290                    * extent[rank-1];
 291
 292       retarray->offset = 0;
 293       retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 294
 295       if (alloc_size == 0)
 296         {
 297           /* Make sure we have a zero-sized array.  */
 298           retarray->dim[0].lbound = 0;
 299           retarray->dim[0].ubound = -1;
 300           return;
 301         }
 302       else
 303         retarray->data = internal_malloc_size (alloc_size);
 304
 305     }
 306   else
 307     {
 308       if (rank != GFC_DESCRIPTOR_RANK (retarray))
 309         runtime_error ("rank of return array incorrect in MINVAL intrinsic");
 310
 311       if (compile_options.bounds_check)
 312         {
 313           for (n=0; n < rank; n++)
 314             {
 315               index_type ret_extent;
 316
 317               ret_extent = retarray->dim[n].ubound + 1
 318                 - retarray->dim[n].lbound;
 319               if (extent[n] != ret_extent)
 320                 runtime_error ("Incorrect extent in return value of"
 321                                " MINVAL intrinsic in dimension %ld:"
 322                                " is %ld, should be %ld", (long int) n + 1,
 323                                (long int) ret_extent, (long int) extent[n]);
 324             }
 325           for (n=0; n<= rank; n++)
 326             {
 327               index_type mask_extent, array_extent;
 328
 329               array_extent = array->dim[n].ubound + 1 - array->dim[n].lbound;
 330               mask_extent = mask->dim[n].ubound + 1 - mask->dim[n].lbound;
 331               if (array_extent != mask_extent)
 332                 runtime_error ("Incorrect extent in MASK argument of"
 333                                " MINVAL intrinsic in dimension %ld:"
 334                                " is %ld, should be %ld", (long int) n + 1,
 335                                (long int) mask_extent, (long int) array_extent);
 336             }
 337         }
 338     }
 339
 340   for (n = 0; n < rank; n++)
 341     {
 342       count[n] = 0;
 343       dstride[n] = retarray->dim[n].stride;
 344       if (extent[n] <= 0)
 345         return;
 346     }
 347
 348   dest = retarray->data;
 349   base = array->data;
 350
 351   while (base)
 352     {
 353       const GFC_INTEGER_4 * restrict src;
 354       const GFC_LOGICAL_1 * restrict msrc;
 355       GFC_INTEGER_4 result;
 356       src = base;
 357       msrc = mbase;
 358       {
 359
 360   result = GFC_INTEGER_4_HUGE;
 361         if (len <= 0)
 362           *dest = GFC_INTEGER_4_HUGE;
 363         else
 364           {
 365             for (n = 0; n < len; n++, src += delta, msrc += mdelta)
 366               {
 367
 368   if (*msrc && *src < result)
 369     result = *src;
 370               }
 371             *dest = result;
 372           }
 373       }
 374       /* Advance to the next element.  */
 375       count[0]++;
 376       base += sstride[0];
 377       mbase += mstride[0];
 378       dest += dstride[0];
 379       n = 0;
 380       while (count[n] == extent[n])
 381         {
 382           /* When we get to the end of a dimension, reset it and increment
 383              the next dimension.  */
 384           count[n] = 0;
 385           /* We could precalculate these products, but this is a less
 386              frequently used path so probably not worth it.  */
 387           base -= sstride[n] * extent[n];
 388           mbase -= mstride[n] * extent[n];
 389           dest -= dstride[n] * extent[n];
 390           n++;
 391           if (n == rank)
 392             {
 393               /* Break out of the look.  */
 394               base = NULL;
 395               break;
 396             }
 397           else
 398             {
 399               count[n]++;
 400               base += sstride[n];
 401               mbase += mstride[n];
 402               dest += dstride[n];
 403             }
 404         }
 405     }
 406 }
 407
 408
 409 extern void sminval_i4 (gfc_array_i4 * const restrict,
 410         gfc_array_i4 * const restrict, const index_type * const restrict,
 411         GFC_LOGICAL_4 *);
 412 export_proto(sminval_i4);
 413
 414 void
 415 sminval_i4 (gfc_array_i4 * const restrict retarray,
 416         gfc_array_i4 * const restrict array,
 417         const index_type * const restrict pdim,
 418         GFC_LOGICAL_4 * mask)
 419 {
 420   index_type rank;
 421   index_type n;
 422   index_type dstride;
 423   GFC_INTEGER_4 *dest;
 424
 425   if (*mask)
 426     {
 427       minval_i4 (retarray, array, pdim);
 428       return;
 429     }
 430     rank = GFC_DESCRIPTOR_RANK (array);
 431   if (rank <= 0)
 432     runtime_error ("Rank of array needs to be > 0");
 433
 434   if (retarray->data == NULL)
 435     {
 436       retarray->dim[0].lbound = 0;
 437       retarray->dim[0].ubound = rank-1;
 438       retarray->dim[0].stride = 1;
 439       retarray->dtype = (retarray->dtype & ~GFC_DTYPE_RANK_MASK) | 1;
 440       retarray->offset = 0;
 441       retarray->data = internal_malloc_size (sizeof (GFC_INTEGER_4) * rank);
 442     }
 443   else
 444     {
 445       if (compile_options.bounds_check)
 446         {
 447           int ret_rank;
 448           index_type ret_extent;
 449
 450           ret_rank = GFC_DESCRIPTOR_RANK (retarray);
 451           if (ret_rank != 1)
 452             runtime_error ("rank of return array in MINVAL intrinsic"
 453                            " should be 1, is %ld", (long int) ret_rank);
 454
 455           ret_extent = retarray->dim[0].ubound + 1 - retarray->dim[0].lbound;
 456             if (ret_extent != rank)
 457               runtime_error ("dimension of return array incorrect");
 458         }
 459     }
 460     dstride = retarray->dim[0].stride;
 461     dest = retarray->data;
 462
 463     for (n = 0; n < rank; n++)
 464       dest[n * dstride] = GFC_INTEGER_4_HUGE ;
 465 }
 466
 467 #endif