libgfortran/generated/any_l8.c

   1 /* Implementation of the ANY intrinsic
   2    Copyright 2002 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 (libgfor).
   6
   7 Libgfortran is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU Lesser General Public
   9 License as published by the Free Software Foundation; either
  10 version 2.1 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 Lesser General Public License for more details.
  16
  17 You should have received a copy of the GNU Lesser General Public
  18 License along with libgfor; see the file COPYING.LIB.  If not,
  19 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #include "config.h"
  23 #include <stdlib.h>
  24 #include <assert.h>
  25 #include "libgfortran.h"
  26
  27 void
  28 __any_l8 (gfc_array_l8 * retarray, gfc_array_l8 *array, index_type *pdim)
  29 {
  30   index_type count[GFC_MAX_DIMENSIONS - 1];
  31   index_type extent[GFC_MAX_DIMENSIONS - 1];
  32   index_type sstride[GFC_MAX_DIMENSIONS - 1];
  33   index_type dstride[GFC_MAX_DIMENSIONS - 1];
  34   GFC_LOGICAL_8 *base;
  35   GFC_LOGICAL_8 *dest;
  36   index_type rank;
  37   index_type n;
  38   index_type len;
  39   index_type delta;
  40   index_type dim;
  41
  42   /* Make dim zero based to avoid confusion.  */
  43   dim = (*pdim) - 1;
  44   rank = GFC_DESCRIPTOR_RANK (array) - 1;
  45   assert (rank == GFC_DESCRIPTOR_RANK (retarray));
  46   if (array->dim[0].stride == 0)
  47     array->dim[0].stride = 1;
  48   if (retarray->dim[0].stride == 0)
  49     retarray->dim[0].stride = 1;
  50
  51   len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
  52   delta = array->dim[dim].stride;
  53
  54   for (n = 0; n < dim; n++)
  55     {
  56       sstride[n] = array->dim[n].stride;
  57       extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
  58     }
  59   for (n = dim; n < rank; n++)
  60     {
  61       sstride[n] = array->dim[n + 1].stride;
  62       extent[n] =
  63         array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
  64     }
  65
  66   if (retarray->data == NULL)
  67     {
  68       for (n = 0; n < rank; n++)
  69         {
  70           retarray->dim[n].lbound = 0;
  71           retarray->dim[n].ubound = extent[n]-1;
  72           if (n == 0)
  73             retarray->dim[n].stride = 1;
  74           else
  75             retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
  76         }
  77
  78       retarray->data = internal_malloc (sizeof (GFC_LOGICAL_8) *
  79                                         (retarray->dim[rank-1].stride * extent[rank-1]));
  80       retarray->base = 0;
  81     }
  82
  83   for (n = 0; n < rank; n++)
  84     {
  85       count[n] = 0;
  86       dstride[n] = retarray->dim[n].stride;
  87       if (extent[n] <= 0)
  88         len = 0;
  89     }
  90
  91   base = array->data;
  92   dest = retarray->data;
  93
  94   while (base)
  95     {
  96       GFC_LOGICAL_8 *src;
  97       GFC_LOGICAL_8 result;
  98       src = base;
  99       {
 100
 101   result = 0;
 102         if (len <= 0)
 103           *dest = 0;
 104         else
 105           {
 106             for (n = 0; n < len; n++, src += delta)
 107               {
 108
 109   /* Return true if any of the elements are set.  */
 110   if (*src)
 111     {
 112       result = 1;
 113       break;
 114     }
 115           }
 116             *dest = result;
 117           }
 118       }
 119       /* Advance to the next element.  */
 120       count[0]++;
 121       base += sstride[0];
 122       dest += dstride[0];
 123       n = 0;
 124       while (count[n] == extent[n])
 125         {
 126           /* When we get to the end of a dimension, reset it and increment
 127              the next dimension.  */
 128           count[n] = 0;
 129           /* We could precalculate these products, but this is a less
 130              frequently used path so proabably not worth it.  */
 131           base -= sstride[n] * extent[n];
 132           dest -= dstride[n] * extent[n];
 133           n++;
 134           if (n == rank)
 135             {
 136               /* Break out of the look.  */
 137               base = NULL;
 138               break;
 139             }
 140           else
 141             {
 142               count[n]++;
 143               base += sstride[n];
 144               dest += dstride[n];
 145             }
 146         }
 147     }
 148 }
 149