/* Implementation of the MAXLOC intrinsic
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright 2002, 2007 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran 95 runtime library (libgfortran).
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., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
-#include "config.h"
+#include "libgfortran.h"
#include <stdlib.h>
#include <assert.h>
-#include <float.h>
#include <limits.h>
-#include "libgfortran.h"
-extern void maxloc1_8_r4 (gfc_array_i8 *, gfc_array_r4 *, index_type *);
+#if defined (HAVE_GFC_REAL_4) && defined (HAVE_GFC_INTEGER_8)
+
+
+extern void maxloc1_8_r4 (gfc_array_i8 * const restrict,
+ gfc_array_r4 * const restrict, const index_type * const restrict);
export_proto(maxloc1_8_r4);
void
-maxloc1_8_r4 (gfc_array_i8 *retarray, gfc_array_r4 *array, index_type *pdim)
+maxloc1_8_r4 (gfc_array_i8 * const restrict retarray,
+ gfc_array_r4 * 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];
- GFC_REAL_4 *base;
- GFC_INTEGER_8 *dest;
+ const GFC_REAL_4 * restrict base;
+ GFC_INTEGER_8 * restrict dest;
index_type rank;
index_type n;
index_type len;
dim = (*pdim) - 1;
rank = GFC_DESCRIPTOR_RANK (array) - 1;
- /* TODO: It should be a front end job to correctly set the strides. */
-
- if (array->dim[0].stride == 0)
- array->dim[0].stride = 1;
-
len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
delta = array->dim[dim].stride;
{
sstride[n] = array->dim[n].stride;
extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+
+ 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;
+
+ if (extent[n] < 0)
+ extent[n] = 0;
}
if (retarray->data == NULL)
{
+ size_t alloc_size;
+
for (n = 0; n < rank; n++)
{
retarray->dim[n].lbound = 0;
retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
}
- retarray->data
- = internal_malloc_size (sizeof (GFC_INTEGER_8)
- * retarray->dim[rank-1].stride
- * extent[rank-1]);
retarray->offset = 0;
retarray->dtype = (array->dtype & ~GFC_DTYPE_RANK_MASK) | rank;
+
+ alloc_size = sizeof (GFC_INTEGER_8) * retarray->dim[rank-1].stride
+ * 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;
+ return;
+ }
+ else
+ retarray->data = internal_malloc_size (alloc_size);
}
else
{
- if (retarray->dim[0].stride == 0)
- retarray->dim[0].stride = 1;
-
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 (compile_options.bounds_check)
+ {
+ for (n=0; n < rank; n++)
+ {
+ index_type ret_extent;
+
+ ret_extent = retarray->dim[n].ubound + 1
+ - retarray->dim[n].lbound;
+ 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++)
while (base)
{
- GFC_REAL_4 *src;
+ const GFC_REAL_4 * restrict src;
GFC_INTEGER_8 result;
src = base;
{
GFC_REAL_4 maxval;
maxval = -GFC_REAL_4_HUGE;
- result = 1;
+ result = 0;
if (len <= 0)
*dest = 0;
else
for (n = 0; n < len; n++, src += delta)
{
- if (*src > maxval)
+ if (*src > maxval || !result)
{
maxval = *src;
result = (GFC_INTEGER_8)n + 1;
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
- frequently used path so proabably not worth it. */
+ frequently used path so probably not worth it. */
base -= sstride[n] * extent[n];
dest -= dstride[n] * extent[n];
n++;
}
-extern void mmaxloc1_8_r4 (gfc_array_i8 *, gfc_array_r4 *, index_type *,
- gfc_array_l4 *);
+extern void mmaxloc1_8_r4 (gfc_array_i8 * const restrict,
+ gfc_array_r4 * const restrict, const index_type * const restrict,
+ gfc_array_l1 * const restrict);
export_proto(mmaxloc1_8_r4);
void
-mmaxloc1_8_r4 (gfc_array_i8 * retarray, gfc_array_r4 * array,
- index_type *pdim, gfc_array_l4 * mask)
+mmaxloc1_8_r4 (gfc_array_i8 * const restrict retarray,
+ gfc_array_r4 * 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_INTEGER_8 *dest;
- GFC_REAL_4 *base;
- GFC_LOGICAL_4 *mbase;
+ GFC_INTEGER_8 * restrict dest;
+ const GFC_REAL_4 * 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;
- /* TODO: It should be a front end job to correctly set the strides. */
-
- if (array->dim[0].stride == 0)
- array->dim[0].stride = 1;
-
- if (mask->dim[0].stride == 0)
- mask->dim[0].stride = 1;
-
len = array->dim[dim].ubound + 1 - array->dim[dim].lbound;
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 = array->dim[dim].stride;
- mdelta = mask->dim[dim].stride;
+ mdelta = mask->dim[dim].stride * mask_kind;
for (n = 0; n < dim; n++)
{
sstride[n] = array->dim[n].stride;
- mstride[n] = mask->dim[n].stride;
+ mstride[n] = mask->dim[n].stride * mask_kind;
extent[n] = array->dim[n].ubound + 1 - array->dim[n].lbound;
+
+ 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;
+ mstride[n] = mask->dim[n + 1].stride * mask_kind;
extent[n] =
array->dim[n + 1].ubound + 1 - array->dim[n + 1].lbound;
+
+ if (extent[n] < 0)
+ extent[n] = 0;
}
if (retarray->data == NULL)
{
+ size_t alloc_size;
+
for (n = 0; n < rank; n++)
{
retarray->dim[n].lbound = 0;
retarray->dim[n].stride = retarray->dim[n-1].stride * extent[n-1];
}
- retarray->data
- = internal_malloc_size (sizeof (GFC_INTEGER_8)
- * retarray->dim[rank-1].stride
- * extent[rank-1]);
+ alloc_size = sizeof (GFC_INTEGER_8) * retarray->dim[rank-1].stride
+ * 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. */
+ retarray->dim[0].lbound = 0;
+ retarray->dim[0].ubound = -1;
+ return;
+ }
+ else
+ retarray->data = internal_malloc_size (alloc_size);
+
}
else
{
- if (retarray->dim[0].stride == 0)
- retarray->dim[0].stride = 1;
-
if (rank != GFC_DESCRIPTOR_RANK (retarray))
- runtime_error ("rank of return array incorrect");
+ runtime_error ("rank of return array incorrect in MAXLOC intrinsic");
+
+ if (compile_options.bounds_check)
+ {
+ for (n=0; n < rank; n++)
+ {
+ index_type ret_extent;
+
+ ret_extent = retarray->dim[n].ubound + 1
+ - retarray->dim[n].lbound;
+ 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++)
+ {
+ index_type mask_extent, array_extent;
+
+ array_extent = array->dim[n].ubound + 1 - array->dim[n].lbound;
+ mask_extent = mask->dim[n].ubound + 1 - mask->dim[n].lbound;
+ if (array_extent != mask_extent)
+ runtime_error ("Incorrect extent in MASK argument of"
+ " MAXLOC intrinsic in dimension %ld:"
+ " is %ld, should be %ld", (long int) n + 1,
+ (long int) mask_extent, (long int) array_extent);
+ }
+ }
}
for (n = 0; n < rank; n++)
dest = retarray->data;
base = array->data;
- mbase = mask->data;
-
- if (GFC_DESCRIPTOR_SIZE (mask) != 4)
- {
- /* This allows the same loop to be used for all logical types. */
- assert (GFC_DESCRIPTOR_SIZE (mask) == 8);
- for (n = 0; n < rank; n++)
- mstride[n] <<= 1;
- mdelta <<= 1;
- mbase = (GFOR_POINTER_L8_TO_L4 (mbase));
- }
while (base)
{
- GFC_REAL_4 *src;
- GFC_LOGICAL_4 *msrc;
+ const GFC_REAL_4 * restrict src;
+ const GFC_LOGICAL_1 * restrict msrc;
GFC_INTEGER_8 result;
src = base;
msrc = mbase;
GFC_REAL_4 maxval;
maxval = -GFC_REAL_4_HUGE;
- result = 1;
+ result = 0;
if (len <= 0)
*dest = 0;
else
for (n = 0; n < len; n++, src += delta, msrc += mdelta)
{
- if (*msrc && *src > maxval)
+ if (*msrc && (*src > maxval || !result))
{
maxval = *src;
result = (GFC_INTEGER_8)n + 1;
the next dimension. */
count[n] = 0;
/* We could precalculate these products, but this is a less
- frequently used path so proabably not worth it. */
+ frequently used path so probably not worth it. */
base -= sstride[n] * extent[n];
mbase -= mstride[n] * extent[n];
dest -= dstride[n] * extent[n];
}
}
+
+extern void smaxloc1_8_r4 (gfc_array_i8 * const restrict,
+ gfc_array_r4 * const restrict, const index_type * const restrict,
+ GFC_LOGICAL_4 *);
+export_proto(smaxloc1_8_r4);
+
+void
+smaxloc1_8_r4 (gfc_array_i8 * const restrict retarray,
+ gfc_array_r4 * const restrict array,
+ const index_type * const restrict pdim,
+ GFC_LOGICAL_4 * mask)
+{
+ index_type rank;
+ index_type n;
+ index_type dstride;
+ GFC_INTEGER_8 *dest;
+
+ if (*mask)
+ {
+ maxloc1_8_r4 (retarray, array, pdim);
+ return;
+ }
+ rank = GFC_DESCRIPTOR_RANK (array);
+ if (rank <= 0)
+ runtime_error ("Rank of array needs to be > 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;
+ retarray->offset = 0;
+ retarray->data = internal_malloc_size (sizeof (GFC_INTEGER_8) * rank);
+ }
+ else
+ {
+ if (compile_options.bounds_check)
+ {
+ int ret_rank;
+ index_type ret_extent;
+
+ ret_rank = GFC_DESCRIPTOR_RANK (retarray);
+ if (ret_rank != 1)
+ runtime_error ("rank of return array in MAXLOC intrinsic"
+ " should be 1, is %ld", (long int) ret_rank);
+
+ ret_extent = retarray->dim[0].ubound + 1 - retarray->dim[0].lbound;
+ if (ret_extent != rank)
+ runtime_error ("dimension of return array incorrect");
+ }
+ }
+ dstride = retarray->dim[0].stride;
+ dest = retarray->data;
+
+ for (n = 0; n < rank; n++)
+ dest[n * dstride] = 0 ;
+}
+
+#endif
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