/* Implementation of the MAXLOC intrinsic
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright 2002, 2007, 2009 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran 95 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 2 of the License, or (at your option) any later version.
-
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
+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.
-You should have received a copy of the GNU General Public
-License along with libgfortran; see the file COPYING. If not,
-write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+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 "config.h"
+#include "libgfortran.h"
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
-#include "libgfortran.h"
#if defined (HAVE_GFC_INTEGER_1) && defined (HAVE_GFC_INTEGER_16)
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 = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
- delta = array->dim[dim].stride;
+ 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] = array->dim[n].stride;
- extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+ 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] = array->dim[n + 1].stride;
- extent[n] =
- array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
+ 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;
+ size_t alloc_size, str;
for (n = 0; n < rank; n++)
{
- retarray->dim[n].lbound = 0;
- retarray->dim[n].ubound = extent[n]-1;
if (n == 0)
- retarray->dim[n].stride = 1;
+ str = 1;
else
- retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
+ 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_INTEGER_16) * retarray->dim[rank-1].stride
+ alloc_size = sizeof (GFC_INTEGER_16) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
* extent[rank-1];
if (alloc_size == 0)
{
/* Make sure we have a zero-sized array. */
- retarray->dim[0].lbound = 0;
- retarray->dim[0].ubound = -1;
+ 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");
+ runtime_error ("rank of return array incorrect in"
+ " MAXLOC 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", "MAXLOC");
}
for (n = 0; n < rank; n++)
{
count[n] = 0;
- dstride[n] = retarray->dim[n].stride;
+ dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
if (extent[n] <= 0)
len = 0;
}
base = array->data;
dest = retarray->data;
- while (base)
+ continue_loop = 1;
+ while (continue_loop)
{
const GFC_INTEGER_1 * restrict src;
GFC_INTEGER_16 result;
if (n == rank)
{
/* Break out of the look. */
- base = NULL;
- break;
+ continue_loop = 0;
+ break;
}
else
{
dim = (*pdim) - 1;
rank = GFC_DESCRIPTOR_RANK (array) - 1;
- len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
+ len = GFC_DESCRIPTOR_EXTENT(array,dim);
if (len <= 0)
return;
else
runtime_error ("Funny sized logical array");
- delta = array->dim[dim].stride;
- mdelta = mask->dim[dim].stride * mask_kind;
+ delta = GFC_DESCRIPTOR_STRIDE(array,dim);
+ mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
for (n = 0; n < dim; n++)
{
- sstride[n] = array->dim[n].stride;
- mstride[n] = mask->dim[n].stride * mask_kind;
- extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+ 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] = array->dim[n + 1].stride;
- mstride[n] = mask->dim[n + 1].stride * mask_kind;
- extent[n] =
- array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
+ 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;
+ size_t alloc_size, str;
for (n = 0; n < rank; n++)
{
- retarray->dim[n].lbound = 0;
- retarray->dim[n].ubound = extent[n]-1;
if (n == 0)
- retarray->dim[n].stride = 1;
+ str = 1;
else
- retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
+ 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_INTEGER_16) * retarray->dim[rank-1].stride
+ alloc_size = sizeof (GFC_INTEGER_16) * GFC_DESCRIPTOR_STRIDE(retarray,rank-1)
* extent[rank-1];
retarray->offset = 0;
if (alloc_size == 0)
{
/* Make sure we have a zero-sized array. */
- retarray->dim[0].lbound = 0;
- retarray->dim[0].ubound = -1;
+ GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
return;
}
else
else
{
if (rank != GFC_DESCRIPTOR_RANK (retarray))
- runtime_error ("rank of return array incorrect");
+ runtime_error ("rank of return array incorrect in MAXLOC intrinsic");
+
+ if (unlikely (compile_options.bounds_check))
+ {
+ bounds_ifunction_return ((array_t *) retarray, extent,
+ "return value", "MAXLOC");
+ bounds_equal_extents ((array_t *) mask, (array_t *) array,
+ "MASK argument", "MAXLOC");
+ }
}
for (n = 0; n < rank; n++)
{
count[n] = 0;
- dstride[n] = retarray->dim[n].stride;
+ dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
if (extent[n] <= 0)
return;
}
const index_type * const restrict pdim,
GFC_LOGICAL_4 * 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];
+ GFC_INTEGER_16 * restrict dest;
index_type rank;
index_type n;
- index_type dstride;
- GFC_INTEGER_16 *dest;
+ index_type dim;
+
if (*mask)
{
maxloc1_16_i1 (retarray, array, pdim);
return;
}
- rank = GFC_DESCRIPTOR_RANK (array);
- if (rank <= 0)
- runtime_error ("Rank of array needs to be > 0");
+ /* Make dim zero based to avoid confusion. */
+ dim = (*pdim) - 1;
+ rank = GFC_DESCRIPTOR_RANK (array) - 1;
+
+ 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)
{
- retarray->dim[0].lbound = 0;
- retarray->dim[0].ubound = rank-1;
- retarray->dim[0].stride = 1;
- retarray->dtype = (retarray->dtype & ~GFC_DTYPE_RANK_MASK) | 1;
+ 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->data = internal_malloc_size (sizeof (GFC_INTEGER_16) * rank);
+ retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
+
+ alloc_size = sizeof (GFC_INTEGER_16) * 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 (GFC_DESCRIPTOR_RANK (retarray) != 1)
- runtime_error ("rank of return array does not equal 1");
+ if (rank != GFC_DESCRIPTOR_RANK (retarray))
+ runtime_error ("rank of return array incorrect in"
+ " MAXLOC intrinsic: is %ld, should be %ld",
+ (long int) (GFC_DESCRIPTOR_RANK (retarray)),
+ (long int) rank);
- if (retarray->dim[0].ubound + 1 - retarray->dim[0].lbound != rank)
- runtime_error ("dimension of return array incorrect");
+ 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"
+ " MAXLOC 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);
}
- dstride = retarray->dim[0].stride;
- dest = retarray->data;
+ dest = retarray->data;
- for (n = 0; n < rank; n++)
- dest[n * dstride] = 0 ;
+ while(1)
+ {
+ *dest = 0;
+ 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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