libgfortran/generated/findloc0_r4.c

   1
   2 /* Implementation of the FINDLOC intrinsic
   3    Copyright (C) 2018 Free Software Foundation, Inc.
   4    Contributed by Thomas König <tk@tkoenig.net>
   5
   6 This file is part of the GNU Fortran 95 runtime library (libgfortran).
   7
   8 Libgfortran is free software; you can redistribute it and/or
   9 modify it under the terms of the GNU General Public
  10 License as published by the Free Software Foundation; either
  11 version 3 of the License, or (at your option) any later version.
  12
  13 Libgfortran is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 Under Section 7 of GPL version 3, you are granted additional
  19 permissions described in the GCC Runtime Library Exception, version
  20 3.1, as published by the Free Software Foundation.
  21
  22 You should have received a copy of the GNU General Public License and
  23 a copy of the GCC Runtime Library Exception along with this program;
  24 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25 <http://www.gnu.org/licenses/>.  */
  26
  27 #include "libgfortran.h"
  28 #include <assert.h>
  29
  30 #if defined (HAVE_GFC_REAL_4)
  31 extern void findloc0_r4 (gfc_array_index_type * const restrict retarray,
  32                         gfc_array_r4 * const restrict array, GFC_REAL_4 value,
  33                          GFC_LOGICAL_4);
  34 export_proto(findloc0_r4);
  35
  36 void
  37 findloc0_r4 (gfc_array_index_type * const restrict retarray,
  38             gfc_array_r4 * const restrict array, GFC_REAL_4 value,
  39             GFC_LOGICAL_4 back)
  40 {
  41   index_type count[GFC_MAX_DIMENSIONS];
  42   index_type extent[GFC_MAX_DIMENSIONS];
  43   index_type sstride[GFC_MAX_DIMENSIONS];
  44   index_type dstride;
  45   const GFC_REAL_4 *base;
  46   index_type * restrict dest;
  47   index_type rank;
  48   index_type n;
  49   index_type sz;
  50
  51   rank = GFC_DESCRIPTOR_RANK (array);
  52   if (rank <= 0)
  53     runtime_error ("Rank of array needs to be > 0");
  54
  55   if (retarray->base_addr == NULL)
  56     {
  57       GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
  58       retarray->dtype.rank = 1;
  59       retarray->offset = 0;
  60       retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_4));
  61     }
  62   else
  63     {
  64       if (unlikely (compile_options.bounds_check))
  65         bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
  66                                 "FINDLOC");
  67     }
  68
  69   dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
  70   dest = retarray->base_addr;
  71
  72   /* Set the return value.  */
  73   for (n = 0; n < rank; n++)
  74     dest[n * dstride] = 0;
  75
  76   sz = 1;
  77   for (n = 0; n < rank; n++)
  78     {
  79       sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
  80       extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
  81       sz *= extent[n];
  82       if (extent[n] <= 0)
  83         return;
  84     }
  85
  86     for (n = 0; n < rank; n++)
  87       count[n] = 0;
  88
  89   if (back)
  90     {
  91       base = array->base_addr + (sz - 1) * 1;
  92
  93       while (1)
  94         {
  95           do
  96             {
  97               if (unlikely(*base == value))
  98                 {
  99                   for (n = 0; n < rank; n++)
 100                     dest[n * dstride] = extent[n] - count[n];
 101
 102                   return;
 103                 }
 104               base -= sstride[0] * 1;
 105             } while(++count[0] != extent[0]);
 106
 107           n = 0;
 108           do
 109             {
 110               /* When we get to the end of a dimension, reset it and increment
 111                  the next dimension.  */
 112               count[n] = 0;
 113               /* We could precalculate these products, but this is a less
 114                  frequently used path so probably not worth it.  */
 115               base += sstride[n] * extent[n] * 1;
 116               n++;
 117               if (n >= rank)
 118                 return;
 119               else
 120                 {
 121                   count[n]++;
 122                   base -= sstride[n] * 1;
 123                 }
 124             } while (count[n] == extent[n]);
 125         }
 126     }
 127   else
 128     {
 129       base = array->base_addr;
 130       while (1)
 131         {
 132           do
 133             {
 134               if (unlikely(*base == value))
 135                 {
 136                   for (n = 0; n < rank; n++)
 137                     dest[n * dstride] = count[n] + 1;
 138
 139                   return;
 140                 }
 141               base += sstride[0] * 1;
 142             } while(++count[0] != extent[0]);
 143
 144           n = 0;
 145           do
 146             {
 147               /* When we get to the end of a dimension, reset it and increment
 148                  the next dimension.  */
 149               count[n] = 0;
 150               /* We could precalculate these products, but this is a less
 151                  frequently used path so probably not worth it.  */
 152               base -= sstride[n] * extent[n] * 1;
 153               n++;
 154               if (n >= rank)
 155                 return;
 156               else
 157                 {
 158                   count[n]++;
 159                   base += sstride[n] * 1;
 160                 }
 161             } while (count[n] == extent[n]);
 162         }
 163     }
 164   return;
 165 }
 166
 167 extern void mfindloc0_r4 (gfc_array_index_type * const restrict retarray,
 168                         gfc_array_r4 * const restrict array, GFC_REAL_4 value,
 169                          gfc_array_l1 *const restrict, GFC_LOGICAL_4);
 170 export_proto(mfindloc0_r4);
 171
 172 void
 173 mfindloc0_r4 (gfc_array_index_type * const restrict retarray,
 174             gfc_array_r4 * const restrict array, GFC_REAL_4 value,
 175             gfc_array_l1 *const restrict mask, GFC_LOGICAL_4 back)
 176 {
 177   index_type count[GFC_MAX_DIMENSIONS];
 178   index_type extent[GFC_MAX_DIMENSIONS];
 179   index_type sstride[GFC_MAX_DIMENSIONS];
 180   index_type mstride[GFC_MAX_DIMENSIONS];
 181   index_type dstride;
 182   const GFC_REAL_4 *base;
 183   index_type * restrict dest;
 184   GFC_LOGICAL_1 *mbase;
 185   index_type rank;
 186   index_type n;
 187   int mask_kind;
 188   index_type sz;
 189
 190   rank = GFC_DESCRIPTOR_RANK (array);
 191   if (rank <= 0)
 192     runtime_error ("Rank of array needs to be > 0");
 193
 194   if (retarray->base_addr == NULL)
 195     {
 196       GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
 197       retarray->dtype.rank = 1;
 198       retarray->offset = 0;
 199       retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_4));
 200     }
 201   else
 202     {
 203       if (unlikely (compile_options.bounds_check))
 204         {
 205           bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
 206                                   "FINDLOC");
 207           bounds_equal_extents ((array_t *) mask, (array_t *) array,
 208                                 "MASK argument", "FINDLOC");
 209         }
 210     }
 211
 212   mask_kind = GFC_DESCRIPTOR_SIZE (mask);
 213
 214   mbase = mask->base_addr;
 215
 216   if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
 217 #ifdef HAVE_GFC_LOGICAL_16
 218       || mask_kind == 16
 219 #endif
 220       )
 221     mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
 222   else
 223     internal_error (NULL, "Funny sized logical array");
 224
 225   dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
 226   dest = retarray->base_addr;
 227
 228   /* Set the return value.  */
 229   for (n = 0; n < rank; n++)
 230     dest[n * dstride] = 0;
 231
 232   sz = 1;
 233   for (n = 0; n < rank; n++)
 234     {
 235       sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
 236       mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
 237       extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
 238       sz *= extent[n];
 239       if (extent[n] <= 0)
 240         return;
 241     }
 242
 243     for (n = 0; n < rank; n++)
 244       count[n] = 0;
 245
 246   if (back)
 247     {
 248       base = array->base_addr + (sz - 1) * 1;
 249       mbase = mbase + (sz - 1) * mask_kind;
 250       while (1)
 251         {
 252           do
 253             {
 254               if (unlikely(*mbase && *base == value))
 255                 {
 256                   for (n = 0; n < rank; n++)
 257                     dest[n * dstride] = extent[n] - count[n];
 258
 259                   return;
 260                 }
 261               base -= sstride[0] * 1;
 262               mbase -= mstride[0];
 263             } while(++count[0] != extent[0]);
 264
 265           n = 0;
 266           do
 267             {
 268               /* When we get to the end of a dimension, reset it and increment
 269                  the next dimension.  */
 270               count[n] = 0;
 271               /* We could precalculate these products, but this is a less
 272                  frequently used path so probably not worth it.  */
 273               base += sstride[n] * extent[n] * 1;
 274               mbase -= mstride[n] * extent[n];
 275               n++;
 276               if (n >= rank)
 277                 return;
 278               else
 279                 {
 280                   count[n]++;
 281                   base -= sstride[n] * 1;
 282                   mbase += mstride[n];
 283                 }
 284             } while (count[n] == extent[n]);
 285         }
 286     }
 287   else
 288     {
 289       base = array->base_addr;
 290       while (1)
 291         {
 292           do
 293             {
 294               if (unlikely(*mbase && *base == value))
 295                 {
 296                   for (n = 0; n < rank; n++)
 297                     dest[n * dstride] = count[n] + 1;
 298
 299                   return;
 300                 }
 301               base += sstride[0] * 1;
 302               mbase += mstride[0];
 303             } while(++count[0] != extent[0]);
 304
 305           n = 0;
 306           do
 307             {
 308               /* When we get to the end of a dimension, reset it and increment
 309                  the next dimension.  */
 310               count[n] = 0;
 311               /* We could precalculate these products, but this is a less
 312                  frequently used path so probably not worth it.  */
 313               base -= sstride[n] * extent[n] * 1;
 314               mbase -= mstride[n] * extent[n];
 315               n++;
 316               if (n >= rank)
 317                 return;
 318               else
 319                 {
 320                   count[n]++;
 321                   base += sstride[n]* 1;
 322                   mbase += mstride[n];
 323                 }
 324             } while (count[n] == extent[n]);
 325         }
 326     }
 327   return;
 328 }
 329
 330 extern void sfindloc0_r4 (gfc_array_index_type * const restrict retarray,
 331                         gfc_array_r4 * const restrict array, GFC_REAL_4 value,
 332                          GFC_LOGICAL_4 *, GFC_LOGICAL_4);
 333 export_proto(sfindloc0_r4);
 334
 335 void
 336 sfindloc0_r4 (gfc_array_index_type * const restrict retarray,
 337             gfc_array_r4 * const restrict array, GFC_REAL_4 value,
 338             GFC_LOGICAL_4 * mask, GFC_LOGICAL_4 back)
 339 {
 340   index_type rank;
 341   index_type dstride;
 342   index_type * restrict dest;
 343   index_type n;
 344
 345   if (*mask)
 346     {
 347       findloc0_r4 (retarray, array, value, back);
 348       return;
 349     }
 350
 351   rank = GFC_DESCRIPTOR_RANK (array);
 352
 353   if (rank <= 0)
 354     internal_error (NULL, "Rank of array needs to be > 0");
 355
 356   if (retarray->base_addr == NULL)
 357     {
 358       GFC_DIMENSION_SET(retarray->dim[0], 0, rank-1, 1);
 359       retarray->dtype.rank = 1;
 360       retarray->offset = 0;
 361       retarray->base_addr = xmallocarray (rank, sizeof (GFC_INTEGER_4));
 362     }
 363   else if (unlikely (compile_options.bounds_check))
 364     {
 365        bounds_iforeach_return ((array_t *) retarray, (array_t *) array,
 366                                "FINDLOC");
 367     }
 368
 369   dstride = GFC_DESCRIPTOR_STRIDE(retarray,0);
 370   dest = retarray->base_addr;
 371   for (n = 0; n<rank; n++)
 372     dest[n * dstride] = 0 ;
 373 }
 374
 375 #endif