47c07d96b1
PR libfortran/27895 * intrinsics/reshape_generic.c (reshape_internal): Fix so that it works correctly for zero-sized arrays. * m4/reshape.m4: Likewise. * generated/reshape_r16.c: Regenerate. * generated/reshape_c4.c: Regenerate. * generated/reshape_i4.c: Regenerate. * generated/reshape_c16.c: Regenerate. * generated/reshape_r10.c: Regenerate. * generated/reshape_r8.c: Regenerate. * generated/reshape_c10.c: Regenerate. * generated/reshape_c8.c: Regenerate. * generated/reshape_i8.c: Regenerate. * generated/reshape_i16.c: Regenerate. * generated/reshape_r4.c: Regenerate. * gcc/testsuite/gfortran.dg/zero_sized_1.f90: Uncomment checks for RESHAPE. From-SVN: r118455
286 lines
7.6 KiB
C
286 lines
7.6 KiB
C
/* Implementation of the RESHAPE
|
|
Copyright 2002, 2006 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.)
|
|
|
|
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. */
|
|
|
|
#include "config.h"
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
#include "libgfortran.h"
|
|
|
|
#if defined (HAVE_GFC_COMPLEX_4)
|
|
|
|
typedef GFC_ARRAY_DESCRIPTOR(1, index_type) shape_type;
|
|
|
|
|
|
extern void reshape_c4 (gfc_array_c4 * const restrict,
|
|
gfc_array_c4 * const restrict,
|
|
shape_type * const restrict,
|
|
gfc_array_c4 * const restrict,
|
|
shape_type * const restrict);
|
|
export_proto(reshape_c4);
|
|
|
|
void
|
|
reshape_c4 (gfc_array_c4 * const restrict ret,
|
|
gfc_array_c4 * const restrict source,
|
|
shape_type * const restrict shape,
|
|
gfc_array_c4 * const restrict pad,
|
|
shape_type * const restrict order)
|
|
{
|
|
/* r.* indicates the return array. */
|
|
index_type rcount[GFC_MAX_DIMENSIONS];
|
|
index_type rextent[GFC_MAX_DIMENSIONS];
|
|
index_type rstride[GFC_MAX_DIMENSIONS];
|
|
index_type rstride0;
|
|
index_type rdim;
|
|
index_type rsize;
|
|
index_type rs;
|
|
index_type rex;
|
|
GFC_COMPLEX_4 *rptr;
|
|
/* s.* indicates the source array. */
|
|
index_type scount[GFC_MAX_DIMENSIONS];
|
|
index_type sextent[GFC_MAX_DIMENSIONS];
|
|
index_type sstride[GFC_MAX_DIMENSIONS];
|
|
index_type sstride0;
|
|
index_type sdim;
|
|
index_type ssize;
|
|
const GFC_COMPLEX_4 *sptr;
|
|
/* p.* indicates the pad array. */
|
|
index_type pcount[GFC_MAX_DIMENSIONS];
|
|
index_type pextent[GFC_MAX_DIMENSIONS];
|
|
index_type pstride[GFC_MAX_DIMENSIONS];
|
|
index_type pdim;
|
|
index_type psize;
|
|
const GFC_COMPLEX_4 *pptr;
|
|
|
|
const GFC_COMPLEX_4 *src;
|
|
int n;
|
|
int dim;
|
|
int sempty, pempty;
|
|
|
|
if (ret->data == NULL)
|
|
{
|
|
rdim = shape->dim[0].ubound - shape->dim[0].lbound + 1;
|
|
rs = 1;
|
|
for (n = 0; n < rdim; n++)
|
|
{
|
|
ret->dim[n].lbound = 0;
|
|
rex = shape->data[n * shape->dim[0].stride];
|
|
ret->dim[n].ubound = rex - 1;
|
|
ret->dim[n].stride = rs;
|
|
rs *= rex;
|
|
}
|
|
ret->offset = 0;
|
|
ret->data = internal_malloc_size ( rs * sizeof (GFC_COMPLEX_4));
|
|
ret->dtype = (source->dtype & ~GFC_DTYPE_RANK_MASK) | rdim;
|
|
}
|
|
else
|
|
{
|
|
rdim = GFC_DESCRIPTOR_RANK (ret);
|
|
}
|
|
|
|
rsize = 1;
|
|
for (n = 0; n < rdim; n++)
|
|
{
|
|
if (order)
|
|
dim = order->data[n * order->dim[0].stride] - 1;
|
|
else
|
|
dim = n;
|
|
|
|
rcount[n] = 0;
|
|
rstride[n] = ret->dim[dim].stride;
|
|
rextent[n] = ret->dim[dim].ubound + 1 - ret->dim[dim].lbound;
|
|
|
|
if (rextent[n] != shape->data[dim * shape->dim[0].stride])
|
|
runtime_error ("shape and target do not conform");
|
|
|
|
if (rsize == rstride[n])
|
|
rsize *= rextent[n];
|
|
else
|
|
rsize = 0;
|
|
if (rextent[n] <= 0)
|
|
return;
|
|
}
|
|
|
|
sdim = GFC_DESCRIPTOR_RANK (source);
|
|
ssize = 1;
|
|
sempty = 0;
|
|
for (n = 0; n < sdim; n++)
|
|
{
|
|
scount[n] = 0;
|
|
sstride[n] = source->dim[n].stride;
|
|
sextent[n] = source->dim[n].ubound + 1 - source->dim[n].lbound;
|
|
if (sextent[n] <= 0)
|
|
{
|
|
sempty = 1;
|
|
sextent[n] = 0;
|
|
}
|
|
|
|
if (ssize == sstride[n])
|
|
ssize *= sextent[n];
|
|
else
|
|
ssize = 0;
|
|
}
|
|
|
|
if (pad)
|
|
{
|
|
pdim = GFC_DESCRIPTOR_RANK (pad);
|
|
psize = 1;
|
|
pempty = 0;
|
|
for (n = 0; n < pdim; n++)
|
|
{
|
|
pcount[n] = 0;
|
|
pstride[n] = pad->dim[n].stride;
|
|
pextent[n] = pad->dim[n].ubound + 1 - pad->dim[n].lbound;
|
|
if (pextent[n] <= 0)
|
|
{
|
|
pempty = 1;
|
|
pextent[n] = 0;
|
|
}
|
|
|
|
if (psize == pstride[n])
|
|
psize *= pextent[n];
|
|
else
|
|
psize = 0;
|
|
}
|
|
pptr = pad->data;
|
|
}
|
|
else
|
|
{
|
|
pdim = 0;
|
|
psize = 1;
|
|
pempty = 1;
|
|
pptr = NULL;
|
|
}
|
|
|
|
if (rsize != 0 && ssize != 0 && psize != 0)
|
|
{
|
|
rsize *= sizeof (GFC_COMPLEX_4);
|
|
ssize *= sizeof (GFC_COMPLEX_4);
|
|
psize *= sizeof (GFC_COMPLEX_4);
|
|
reshape_packed ((char *)ret->data, rsize, (char *)source->data,
|
|
ssize, pad ? (char *)pad->data : NULL, psize);
|
|
return;
|
|
}
|
|
rptr = ret->data;
|
|
src = sptr = source->data;
|
|
rstride0 = rstride[0];
|
|
sstride0 = sstride[0];
|
|
|
|
if (sempty && pempty)
|
|
abort ();
|
|
|
|
if (sempty)
|
|
{
|
|
/* Switch immediately to the pad array. */
|
|
src = pptr;
|
|
sptr = NULL;
|
|
sdim = pdim;
|
|
for (dim = 0; dim < pdim; dim++)
|
|
{
|
|
scount[dim] = pcount[dim];
|
|
sextent[dim] = pextent[dim];
|
|
sstride[dim] = pstride[dim];
|
|
sstride0 = sstride[0] * sizeof (GFC_COMPLEX_4);
|
|
}
|
|
}
|
|
|
|
while (rptr)
|
|
{
|
|
/* Select between the source and pad arrays. */
|
|
*rptr = *src;
|
|
/* Advance to the next element. */
|
|
rptr += rstride0;
|
|
src += sstride0;
|
|
rcount[0]++;
|
|
scount[0]++;
|
|
|
|
/* Advance to the next destination element. */
|
|
n = 0;
|
|
while (rcount[n] == rextent[n])
|
|
{
|
|
/* When we get to the end of a dimension, reset it and increment
|
|
the next dimension. */
|
|
rcount[n] = 0;
|
|
/* We could precalculate these products, but this is a less
|
|
frequently used path so probably not worth it. */
|
|
rptr -= rstride[n] * rextent[n];
|
|
n++;
|
|
if (n == rdim)
|
|
{
|
|
/* Break out of the loop. */
|
|
rptr = NULL;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
rcount[n]++;
|
|
rptr += rstride[n];
|
|
}
|
|
}
|
|
/* Advance to the next source element. */
|
|
n = 0;
|
|
while (scount[n] == sextent[n])
|
|
{
|
|
/* When we get to the end of a dimension, reset it and increment
|
|
the next dimension. */
|
|
scount[n] = 0;
|
|
/* We could precalculate these products, but this is a less
|
|
frequently used path so probably not worth it. */
|
|
src -= sstride[n] * sextent[n];
|
|
n++;
|
|
if (n == sdim)
|
|
{
|
|
if (sptr && pad)
|
|
{
|
|
/* Switch to the pad array. */
|
|
sptr = NULL;
|
|
sdim = pdim;
|
|
for (dim = 0; dim < pdim; dim++)
|
|
{
|
|
scount[dim] = pcount[dim];
|
|
sextent[dim] = pextent[dim];
|
|
sstride[dim] = pstride[dim];
|
|
sstride0 = sstride[0];
|
|
}
|
|
}
|
|
/* We now start again from the beginning of the pad array. */
|
|
src = pptr;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
scount[n]++;
|
|
src += sstride[n];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|