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/* Implementation of the PRODUCT intrinsic
   Copyright 2002, 2007, 2009, 2010 Free Software Foundation, Inc.
   Contributed by Paul Brook <paul@nowt.org>
 
This file is part of the GNU Fortran runtime library (libgfortran).
 
Libgfortran is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
 
Libgfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
 
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */
 
#include "libgfortran.h"
#include <stdlib.h>
#include <assert.h>
 
 
#if defined (HAVE_GFC_REAL_8) && defined (HAVE_GFC_REAL_8)
 
 
extern void product_r8 (gfc_array_r8 * const restrict,
        gfc_array_r8 * const restrict, const index_type * const restrict);
export_proto(product_r8);
 
void
product_r8 (gfc_array_r8 * const restrict retarray,
        gfc_array_r8 * const restrict array,
        const index_type * const restrict pdim)
{
  index_type count[GFC_MAX_DIMENSIONS];
  index_type extent[GFC_MAX_DIMENSIONS];
  index_type sstride[GFC_MAX_DIMENSIONS];
  index_type dstride[GFC_MAX_DIMENSIONS];
  const GFC_REAL_8 * restrict base;
  GFC_REAL_8 * restrict dest;
  index_type rank;
  index_type n;
  index_type len;
  index_type delta;
  index_type dim;
  int continue_loop;
 
  /* Make dim zero based to avoid confusion.  */
  dim = (*pdim) - 1;
  rank = GFC_DESCRIPTOR_RANK (array) - 1;
 
  len = GFC_DESCRIPTOR_EXTENT(array,dim);
  if (len < 0)
    len = 0;
  delta = GFC_DESCRIPTOR_STRIDE(array,dim);
 
  for (n = 0; n < dim; n++)
    {
      sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
      extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
 
      if (extent[n] < 0)
        extent[n] = 0;
    }
  for (n = dim; n < rank; n++)
    {
      sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);
      extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
 
      if (extent[n] < 0)
        extent[n] = 0;
    }
 
  if (retarray->data == NULL)
    {
      size_t alloc_size, str;
 
      for (n = 0; n < rank; n++)
        {
          if (n == 0)
            str = 1;
          else
            str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
 
          GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
 
        }
 
      retarray->offset = 0;
      retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 
      alloc_size = sizeof (GFC_REAL_8) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
                   * extent[rank-1];
 
      retarray->data = internal_malloc_size (alloc_size);
      if (alloc_size == 0)
        {
          /* Make sure we have a zero-sized array.  */
          GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
          return;
 
        }
    }
  else
    {
      if (rank != GFC_DESCRIPTOR_RANK (retarray))
        runtime_error ("rank of return array incorrect in"
                       " PRODUCT intrinsic: is %ld, should be %ld",
                       (long int) (GFC_DESCRIPTOR_RANK (retarray)),
                       (long int) rank);
 
      if (unlikely (compile_options.bounds_check))
        bounds_ifunction_return ((array_t *) retarray, extent,
                                 "return value", "PRODUCT");
    }
 
  for (n = 0; n < rank; n++)
    {
      count[n] = 0;
      dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
      if (extent[n] <= 0)
        return;
    }
 
  base = array->data;
  dest = retarray->data;
 
  continue_loop = 1;
  while (continue_loop)
    {
      const GFC_REAL_8 * restrict src;
      GFC_REAL_8 result;
      src = base;
      {
 
  result = 1;
        if (len <= 0)
          *dest = 1;
        else
          {
            for (n = 0; n < len; n++, src += delta)
              {
 
  result *= *src;
              }
 
            *dest = result;
          }
      }
      /* Advance to the next element.  */
      count[0]++;
      base += sstride[0];
      dest += dstride[0];
      n = 0;
      while (count[n] == extent[n])
        {
          /* When we get to the end of a dimension, reset it and increment
             the next dimension.  */
          count[n] = 0;
          /* We could precalculate these products, but this is a less
             frequently used path so probably not worth it.  */
          base -= sstride[n] * extent[n];
          dest -= dstride[n] * extent[n];
          n++;
          if (n == rank)
            {
              /* Break out of the look.  */
              continue_loop = 0;
              break;
            }
          else
            {
              count[n]++;
              base += sstride[n];
              dest += dstride[n];
            }
        }
    }
}
 
 
extern void mproduct_r8 (gfc_array_r8 * const restrict,
        gfc_array_r8 * const restrict, const index_type * const restrict,
        gfc_array_l1 * const restrict);
export_proto(mproduct_r8);
 
void
mproduct_r8 (gfc_array_r8 * const restrict retarray,
        gfc_array_r8 * const restrict array,
        const index_type * const restrict pdim,
        gfc_array_l1 * const restrict mask)
{
  index_type count[GFC_MAX_DIMENSIONS];
  index_type extent[GFC_MAX_DIMENSIONS];
  index_type sstride[GFC_MAX_DIMENSIONS];
  index_type dstride[GFC_MAX_DIMENSIONS];
  index_type mstride[GFC_MAX_DIMENSIONS];
  GFC_REAL_8 * restrict dest;
  const GFC_REAL_8 * restrict base;
  const GFC_LOGICAL_1 * restrict mbase;
  int rank;
  int dim;
  index_type n;
  index_type len;
  index_type delta;
  index_type mdelta;
  int mask_kind;
 
  dim = (*pdim) - 1;
  rank = GFC_DESCRIPTOR_RANK (array) - 1;
 
  len = GFC_DESCRIPTOR_EXTENT(array,dim);
  if (len <= 0)
    return;
 
  mbase = mask->data;
 
  mask_kind = GFC_DESCRIPTOR_SIZE (mask);
 
  if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
#ifdef HAVE_GFC_LOGICAL_16
      || mask_kind == 16
#endif
      )
    mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
  else
    runtime_error ("Funny sized logical array");
 
  delta = GFC_DESCRIPTOR_STRIDE(array,dim);
  mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
 
  for (n = 0; n < dim; n++)
    {
      sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
      mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
      extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
 
      if (extent[n] < 0)
        extent[n] = 0;
 
    }
  for (n = dim; n < rank; n++)
    {
      sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1);
      mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
      extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
 
      if (extent[n] < 0)
        extent[n] = 0;
    }
 
  if (retarray->data == NULL)
    {
      size_t alloc_size, str;
 
      for (n = 0; n < rank; n++)
        {
          if (n == 0)
            str = 1;
          else
            str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
 
          GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
 
        }
 
      alloc_size = sizeof (GFC_REAL_8) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
                   * extent[rank-1];
 
      retarray->offset = 0;
      retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 
      if (alloc_size == 0)
        {
          /* Make sure we have a zero-sized array.  */
          GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
          return;
        }
      else
        retarray->data = internal_malloc_size (alloc_size);
 
    }
  else
    {
      if (rank != GFC_DESCRIPTOR_RANK (retarray))
        runtime_error ("rank of return array incorrect in PRODUCT intrinsic");
 
      if (unlikely (compile_options.bounds_check))
        {
          bounds_ifunction_return ((array_t *) retarray, extent,
                                   "return value", "PRODUCT");
          bounds_equal_extents ((array_t *) mask, (array_t *) array,
                                "MASK argument", "PRODUCT");
        }
    }
 
  for (n = 0; n < rank; n++)
    {
      count[n] = 0;
      dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
      if (extent[n] <= 0)
        return;
    }
 
  dest = retarray->data;
  base = array->data;
 
  while (base)
    {
      const GFC_REAL_8 * restrict src;
      const GFC_LOGICAL_1 * restrict msrc;
      GFC_REAL_8 result;
      src = base;
      msrc = mbase;
      {
 
  result = 1;
        if (len <= 0)
          *dest = 1;
        else
          {
            for (n = 0; n < len; n++, src += delta, msrc += mdelta)
              {
 
  if (*msrc)
    result *= *src;
              }
            *dest = result;
          }
      }
      /* Advance to the next element.  */
      count[0]++;
      base += sstride[0];
      mbase += mstride[0];
      dest += dstride[0];
      n = 0;
      while (count[n] == extent[n])
        {
          /* When we get to the end of a dimension, reset it and increment
             the next dimension.  */
          count[n] = 0;
          /* We could precalculate these products, but this is a less
             frequently used path so probably not worth it.  */
          base -= sstride[n] * extent[n];
          mbase -= mstride[n] * extent[n];
          dest -= dstride[n] * extent[n];
          n++;
          if (n == rank)
            {
              /* Break out of the look.  */
              base = NULL;
              break;
            }
          else
            {
              count[n]++;
              base += sstride[n];
              mbase += mstride[n];
              dest += dstride[n];
            }
        }
    }
}
 
 
extern void sproduct_r8 (gfc_array_r8 * const restrict,
        gfc_array_r8 * const restrict, const index_type * const restrict,
        GFC_LOGICAL_4 *);
export_proto(sproduct_r8);
 
void
sproduct_r8 (gfc_array_r8 * const restrict retarray,
        gfc_array_r8 * const restrict array,
        const index_type * const restrict pdim,
        GFC_LOGICAL_4 * mask)
{
  index_type count[GFC_MAX_DIMENSIONS];
  index_type extent[GFC_MAX_DIMENSIONS];
  index_type dstride[GFC_MAX_DIMENSIONS];
  GFC_REAL_8 * restrict dest;
  index_type rank;
  index_type n;
  index_type dim;
 
 
  if (*mask)
    {
      product_r8 (retarray, array, pdim);
      return;
    }
  /* Make dim zero based to avoid confusion.  */
  dim = (*pdim) - 1;
  rank = GFC_DESCRIPTOR_RANK (array) - 1;
 
  for (n = 0; n < dim; n++)
    {
      extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
 
      if (extent[n] <= 0)
        extent[n] = 0;
    }
 
  for (n = dim; n < rank; n++)
    {
      extent[n] =
        GFC_DESCRIPTOR_EXTENT(array,n + 1);
 
      if (extent[n] <= 0)
        extent[n] = 0;
    }
 
  if (retarray->data == NULL)
    {
      size_t alloc_size, str;
 
      for (n = 0; n < rank; n++)
        {
          if (n == 0)
            str = 1;
          else
            str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
 
          GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
 
        }
 
      retarray->offset = 0;
      retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
 
      alloc_size = sizeof (GFC_REAL_8) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
                   * extent[rank-1];
 
      if (alloc_size == 0)
        {
          /* Make sure we have a zero-sized array.  */
          GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
          return;
        }
      else
        retarray->data = internal_malloc_size (alloc_size);
    }
  else
    {
      if (rank != GFC_DESCRIPTOR_RANK (retarray))
        runtime_error ("rank of return array incorrect in"
                       " PRODUCT intrinsic: is %ld, should be %ld",
                       (long int) (GFC_DESCRIPTOR_RANK (retarray)),
                       (long int) rank);
 
      if (unlikely (compile_options.bounds_check))
        {
          for (n=0; n < rank; n++)
            {
              index_type ret_extent;
 
              ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);
              if (extent[n] != ret_extent)
                runtime_error ("Incorrect extent in return value of"
                               " PRODUCT intrinsic in dimension %ld:"
                               " is %ld, should be %ld", (long int) n + 1,
                               (long int) ret_extent, (long int) extent[n]);
            }
        }
    }
 
  for (n = 0; n < rank; n++)
    {
      count[n] = 0;
      dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
    }
 
  dest = retarray->data;
 
  while(1)
    {
      *dest = 1;
      count[0]++;
      dest += dstride[0];
      n = 0;
      while (count[n] == extent[n])
        {
          /* When we get to the end of a dimension, reset it and increment
             the next dimension.  */
          count[n] = 0;
          /* We could precalculate these products, but this is a less
             frequently used path so probably not worth it.  */
          dest -= dstride[n] * extent[n];
          n++;
          if (n == rank)
            return;
          else
            {
              count[n]++;
              dest += dstride[n];
            }
        }
    }
}
 
#endif

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [generated/] [product_r8.c] - Blame information for rev 745

Line No.	Rev	Author	Line
1	733	jeremybenn	`/* Implementation of the PRODUCT intrinsic`
2			`Copyright 2002, 2007, 2009, 2010 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 <stdlib.h>`
28			`#include <assert.h>`
29
30
31			`#if defined (HAVE_GFC_REAL_8) && defined (HAVE_GFC_REAL_8)`
32
33
34			`extern void product_r8 (gfc_array_r8 * const restrict,`
35			`gfc_array_r8 * const restrict, const index_type * const restrict);`
36			`export_proto(product_r8);`
37
38			`void`
39			`product_r8 (gfc_array_r8 * const restrict retarray,`
40			`gfc_array_r8 * const restrict array,`
41			`const index_type * const restrict pdim)`
42			`{`
43			`index_type count[GFC_MAX_DIMENSIONS];`
44			`index_type extent[GFC_MAX_DIMENSIONS];`
45			`index_type sstride[GFC_MAX_DIMENSIONS];`
46			`index_type dstride[GFC_MAX_DIMENSIONS];`
47			`const GFC_REAL_8 * restrict base;`
48			`GFC_REAL_8 * restrict dest;`
49			`index_type rank;`
50			`index_type n;`
51			`index_type len;`
52			`index_type delta;`
53			`index_type dim;`
54			`int continue_loop;`
55
56			`/* Make dim zero based to avoid confusion. */`
57			`dim = (*pdim) - 1;`
58			`rank = GFC_DESCRIPTOR_RANK (array) - 1;`
59
60			`len = GFC_DESCRIPTOR_EXTENT(array,dim);`
61			`if (len < 0)`
62			`len = 0;`
63			`delta = GFC_DESCRIPTOR_STRIDE(array,dim);`
64
65			`for (n = 0; n < dim; n++)`
66			`{`
67			`sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);`
68			`extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);`
69
70			`if (extent[n] < 0)`
71			`extent[n] = 0;`
72			`}`
73			`for (n = dim; n < rank; n++)`
74			`{`
75			`sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);`
76			`extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);`
77
78			`if (extent[n] < 0)`
79			`extent[n] = 0;`
80			`}`
81
82			`if (retarray->data == NULL)`
83			`{`
84			`size_t alloc_size, str;`
85
86			`for (n = 0; n < rank; n++)`
87			`{`
88			`if (n == 0)`
89			`str = 1;`
90			`else`
91			`str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];`
92
93			`GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);`
94
95			`}`
96
97			`retarray->offset = 0;`
98			`retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) \| rank;`
99
100			`alloc_size = sizeof (GFC_REAL_8) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)`
101			`* extent[rank-1];`
102
103			`retarray->data = internal_malloc_size (alloc_size);`
104			`if (alloc_size == 0)`
105			`{`
106			`/* Make sure we have a zero-sized array. */`
107			`GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);`
108			`return;`
109
110			`}`
111			`}`
112			`else`
113			`{`
114			`if (rank != GFC_DESCRIPTOR_RANK (retarray))`
115			`runtime_error ("rank of return array incorrect in"`
116			`" PRODUCT intrinsic: is %ld, should be %ld",`
117			`(long int) (GFC_DESCRIPTOR_RANK (retarray)),`
118			`(long int) rank);`
119
120			`if (unlikely (compile_options.bounds_check))`
121			`bounds_ifunction_return ((array_t *) retarray, extent,`
122			`"return value", "PRODUCT");`
123			`}`
124
125			`for (n = 0; n < rank; n++)`
126			`{`
127			`count[n] = 0;`
128			`dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);`
129			`if (extent[n] <= 0)`
130			`return;`
131			`}`
132
133			`base = array->data;`
134			`dest = retarray->data;`
135
136			`continue_loop = 1;`
137			`while (continue_loop)`
138			`{`
139			`const GFC_REAL_8 * restrict src;`
140			`GFC_REAL_8 result;`
141			`src = base;`
142			`{`
143
144			`result = 1;`
145			`if (len <= 0)`
146			`*dest = 1;`
147			`else`
148			`{`
149			`for (n = 0; n < len; n++, src += delta)`
150			`{`
151
152			`result = src;`
153			`}`
154
155			`*dest = result;`
156			`}`
157			`}`
158			`/* Advance to the next element. */`
159			`count[0]++;`
160			`base += sstride[0];`
161			`dest += dstride[0];`
162			`n = 0;`
163			`while (count[n] == extent[n])`
164			`{`
165			`/* When we get to the end of a dimension, reset it and increment`
166			`the next dimension. */`
167			`count[n] = 0;`
168			`/* We could precalculate these products, but this is a less`
169			`frequently used path so probably not worth it. */`
170			`base -= sstride[n] * extent[n];`
171			`dest -= dstride[n] * extent[n];`
172			`n++;`
173			`if (n == rank)`
174			`{`
175			`/* Break out of the look. */`
176			`continue_loop = 0;`
177			`break;`
178			`}`
179			`else`
180			`{`
181			`count[n]++;`
182			`base += sstride[n];`
183			`dest += dstride[n];`
184			`}`
185			`}`
186			`}`
187			`}`
188
189
190			`extern void mproduct_r8 (gfc_array_r8 * const restrict,`
191			`gfc_array_r8 * const restrict, const index_type * const restrict,`
192			`gfc_array_l1 * const restrict);`
193			`export_proto(mproduct_r8);`
194
195			`void`
196			`mproduct_r8 (gfc_array_r8 * const restrict retarray,`
197			`gfc_array_r8 * const restrict array,`
198			`const index_type * const restrict pdim,`
199			`gfc_array_l1 * const restrict mask)`
200			`{`
201			`index_type count[GFC_MAX_DIMENSIONS];`
202			`index_type extent[GFC_MAX_DIMENSIONS];`
203			`index_type sstride[GFC_MAX_DIMENSIONS];`
204			`index_type dstride[GFC_MAX_DIMENSIONS];`
205			`index_type mstride[GFC_MAX_DIMENSIONS];`
206			`GFC_REAL_8 * restrict dest;`
207			`const GFC_REAL_8 * restrict base;`
208			`const GFC_LOGICAL_1 * restrict mbase;`
209			`int rank;`
210			`int dim;`
211			`index_type n;`
212			`index_type len;`
213			`index_type delta;`
214			`index_type mdelta;`
215			`int mask_kind;`
216
217			`dim = (*pdim) - 1;`
218			`rank = GFC_DESCRIPTOR_RANK (array) - 1;`
219
220			`len = GFC_DESCRIPTOR_EXTENT(array,dim);`
221			`if (len <= 0)`
222			`return;`
223
224			`mbase = mask->data;`
225
226			`mask_kind = GFC_DESCRIPTOR_SIZE (mask);`
227
228			`if (mask_kind == 1 \|\| mask_kind == 2 \|\| mask_kind == 4 \|\| mask_kind == 8`
229			`#ifdef HAVE_GFC_LOGICAL_16`
230			`\|\| mask_kind == 16`
231			`#endif`
232			`)`
233			`mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);`
234			`else`
235			`runtime_error ("Funny sized logical array");`
236
237			`delta = GFC_DESCRIPTOR_STRIDE(array,dim);`
238			`mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);`
239
240			`for (n = 0; n < dim; n++)`
241			`{`
242			`sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);`
243			`mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);`
244			`extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);`
245
246			`if (extent[n] < 0)`
247			`extent[n] = 0;`
248
249			`}`
250			`for (n = dim; n < rank; n++)`
251			`{`
252			`sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n + 1);`
253			`mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);`
254			`extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);`
255
256			`if (extent[n] < 0)`
257			`extent[n] = 0;`
258			`}`
259
260			`if (retarray->data == NULL)`
261			`{`
262			`size_t alloc_size, str;`
263
264			`for (n = 0; n < rank; n++)`
265			`{`
266			`if (n == 0)`
267			`str = 1;`
268			`else`
269			`str= GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];`
270
271			`GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);`
272
273			`}`
274
275			`alloc_size = sizeof (GFC_REAL_8) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)`
276			`* extent[rank-1];`
277
278			`retarray->offset = 0;`
279			`retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) \| rank;`
280
281			`if (alloc_size == 0)`
282			`{`
283			`/* Make sure we have a zero-sized array. */`
284			`GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);`
285			`return;`
286			`}`
287			`else`
288			`retarray->data = internal_malloc_size (alloc_size);`
289
290			`}`
291			`else`
292			`{`
293			`if (rank != GFC_DESCRIPTOR_RANK (retarray))`
294			`runtime_error ("rank of return array incorrect in PRODUCT intrinsic");`
295
296			`if (unlikely (compile_options.bounds_check))`
297			`{`
298			`bounds_ifunction_return ((array_t *) retarray, extent,`
299			`"return value", "PRODUCT");`
300			`bounds_equal_extents ((array_t ) mask, (array_t ) array,`
301			`"MASK argument", "PRODUCT");`
302			`}`
303			`}`
304
305			`for (n = 0; n < rank; n++)`
306			`{`
307			`count[n] = 0;`
308			`dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);`
309			`if (extent[n] <= 0)`
310			`return;`
311			`}`
312
313			`dest = retarray->data;`
314			`base = array->data;`
315
316			`while (base)`
317			`{`
318			`const GFC_REAL_8 * restrict src;`
319			`const GFC_LOGICAL_1 * restrict msrc;`
320			`GFC_REAL_8 result;`
321			`src = base;`
322			`msrc = mbase;`
323			`{`
324
325			`result = 1;`
326			`if (len <= 0)`
327			`*dest = 1;`
328			`else`
329			`{`
330			`for (n = 0; n < len; n++, src += delta, msrc += mdelta)`
331			`{`
332
333			`if (*msrc)`
334			`result = src;`
335			`}`
336			`*dest = result;`
337			`}`
338			`}`
339			`/* Advance to the next element. */`
340			`count[0]++;`
341			`base += sstride[0];`
342			`mbase += mstride[0];`
343			`dest += dstride[0];`
344			`n = 0;`
345			`while (count[n] == extent[n])`
346			`{`
347			`/* When we get to the end of a dimension, reset it and increment`
348			`the next dimension. */`
349			`count[n] = 0;`
350			`/* We could precalculate these products, but this is a less`
351			`frequently used path so probably not worth it. */`
352			`base -= sstride[n] * extent[n];`
353			`mbase -= mstride[n] * extent[n];`
354			`dest -= dstride[n] * extent[n];`
355			`n++;`
356			`if (n == rank)`
357			`{`
358			`/* Break out of the look. */`
359			`base = NULL;`
360			`break;`
361			`}`
362			`else`
363			`{`
364			`count[n]++;`
365			`base += sstride[n];`
366			`mbase += mstride[n];`
367			`dest += dstride[n];`
368			`}`
369			`}`
370			`}`
371			`}`
372
373
374			`extern void sproduct_r8 (gfc_array_r8 * const restrict,`
375			`gfc_array_r8 * const restrict, const index_type * const restrict,`
376			`GFC_LOGICAL_4 *);`
377			`export_proto(sproduct_r8);`
378
379			`void`
380			`sproduct_r8 (gfc_array_r8 * const restrict retarray,`
381			`gfc_array_r8 * const restrict array,`
382			`const index_type * const restrict pdim,`
383			`GFC_LOGICAL_4 * mask)`
384			`{`
385			`index_type count[GFC_MAX_DIMENSIONS];`
386			`index_type extent[GFC_MAX_DIMENSIONS];`
387			`index_type dstride[GFC_MAX_DIMENSIONS];`
388			`GFC_REAL_8 * restrict dest;`
389			`index_type rank;`
390			`index_type n;`
391			`index_type dim;`
392
393
394			`if (*mask)`
395			`{`
396			`product_r8 (retarray, array, pdim);`
397			`return;`
398			`}`
399			`/* Make dim zero based to avoid confusion. */`
400			`dim = (*pdim) - 1;`
401			`rank = GFC_DESCRIPTOR_RANK (array) - 1;`
402
403			`for (n = 0; n < dim; n++)`
404			`{`
405			`extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);`
406
407			`if (extent[n] <= 0)`
408			`extent[n] = 0;`
409			`}`
410
411			`for (n = dim; n < rank; n++)`
412			`{`
413			`extent[n] =`
414			`GFC_DESCRIPTOR_EXTENT(array,n + 1);`
415
416			`if (extent[n] <= 0)`
417			`extent[n] = 0;`
418			`}`
419
420			`if (retarray->data == NULL)`
421			`{`
422			`size_t alloc_size, str;`
423
424			`for (n = 0; n < rank; n++)`
425			`{`
426			`if (n == 0)`
427			`str = 1;`
428			`else`
429			`str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];`
430
431			`GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);`
432
433			`}`
434
435			`retarray->offset = 0;`
436			`retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) \| rank;`
437
438			`alloc_size = sizeof (GFC_REAL_8) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)`
439			`* extent[rank-1];`
440
441			`if (alloc_size == 0)`
442			`{`
443			`/* Make sure we have a zero-sized array. */`
444			`GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);`
445			`return;`
446			`}`
447			`else`
448			`retarray->data = internal_malloc_size (alloc_size);`
449			`}`
450			`else`
451			`{`
452			`if (rank != GFC_DESCRIPTOR_RANK (retarray))`
453			`runtime_error ("rank of return array incorrect in"`
454			`" PRODUCT intrinsic: is %ld, should be %ld",`
455			`(long int) (GFC_DESCRIPTOR_RANK (retarray)),`
456			`(long int) rank);`
457
458			`if (unlikely (compile_options.bounds_check))`
459			`{`
460			`for (n=0; n < rank; n++)`
461			`{`
462			`index_type ret_extent;`
463
464			`ret_extent = GFC_DESCRIPTOR_EXTENT(retarray,n);`
465			`if (extent[n] != ret_extent)`
466			`runtime_error ("Incorrect extent in return value of"`
467			`" PRODUCT intrinsic in dimension %ld:"`
468			`" is %ld, should be %ld", (long int) n + 1,`
469			`(long int) ret_extent, (long int) extent[n]);`
470			`}`
471			`}`
472			`}`
473
474			`for (n = 0; n < rank; n++)`
475			`{`
476			`count[n] = 0;`
477			`dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);`
478			`}`
479
480			`dest = retarray->data;`
481
482			`while(1)`
483			`{`
484			`*dest = 1;`
485			`count[0]++;`
486			`dest += dstride[0];`
487			`n = 0;`
488			`while (count[n] == extent[n])`
489			`{`
490			`/* When we get to the end of a dimension, reset it and increment`
491			`the next dimension. */`
492			`count[n] = 0;`
493			`/* We could precalculate these products, but this is a less`
494			`frequently used path so probably not worth it. */`
495			`dest -= dstride[n] * extent[n];`
496			`n++;`
497			`if (n == rank)`
498			`return;`
499			`else`
500			`{`
501			`count[n]++;`
502			`dest += dstride[n];`
503			`}`
504			`}`
505			`}`
506			`}`
507
508			`#endif`