mirror of git://gcc.gnu.org/git/gcc.git
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/* Implementation of the TRANSPOSE intrinsic
|
|
Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
|
Contributed by Tobias Schlüter
|
|
|
|
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 <assert.h>
|
|
|
|
|
|
#if defined (HAVE_GFC_REAL_4)
|
|
|
|
extern void transpose_r4 (gfc_array_r4 * const restrict ret,
|
|
gfc_array_r4 * const restrict source);
|
|
export_proto(transpose_r4);
|
|
|
|
void
|
|
transpose_r4 (gfc_array_r4 * const restrict ret,
|
|
gfc_array_r4 * const restrict source)
|
|
{
|
|
/* r.* indicates the return array. */
|
|
index_type rxstride, rystride;
|
|
GFC_REAL_4 * restrict rptr;
|
|
/* s.* indicates the source array. */
|
|
index_type sxstride, systride;
|
|
const GFC_REAL_4 *sptr;
|
|
|
|
index_type xcount, ycount;
|
|
index_type x, y;
|
|
|
|
assert (GFC_DESCRIPTOR_RANK (source) == 2);
|
|
|
|
if (ret->base_addr == NULL)
|
|
{
|
|
assert (GFC_DESCRIPTOR_RANK (ret) == 2);
|
|
assert (ret->dtype == source->dtype);
|
|
|
|
GFC_DIMENSION_SET(ret->dim[0], 0, GFC_DESCRIPTOR_EXTENT(source,1) - 1,
|
|
1);
|
|
|
|
GFC_DIMENSION_SET(ret->dim[1], 0, GFC_DESCRIPTOR_EXTENT(source,0) - 1,
|
|
GFC_DESCRIPTOR_EXTENT(source, 1));
|
|
|
|
ret->base_addr = xmallocarray (size0 ((array_t *) ret),
|
|
sizeof (GFC_REAL_4));
|
|
ret->offset = 0;
|
|
} else if (unlikely (compile_options.bounds_check))
|
|
{
|
|
index_type ret_extent, src_extent;
|
|
|
|
ret_extent = GFC_DESCRIPTOR_EXTENT(ret,0);
|
|
src_extent = GFC_DESCRIPTOR_EXTENT(source,1);
|
|
|
|
if (src_extent != ret_extent)
|
|
runtime_error ("Incorrect extent in return value of TRANSPOSE"
|
|
" intrinsic in dimension 1: is %ld,"
|
|
" should be %ld", (long int) src_extent,
|
|
(long int) ret_extent);
|
|
|
|
ret_extent = GFC_DESCRIPTOR_EXTENT(ret,1);
|
|
src_extent = GFC_DESCRIPTOR_EXTENT(source,0);
|
|
|
|
if (src_extent != ret_extent)
|
|
runtime_error ("Incorrect extent in return value of TRANSPOSE"
|
|
" intrinsic in dimension 2: is %ld,"
|
|
" should be %ld", (long int) src_extent,
|
|
(long int) ret_extent);
|
|
|
|
}
|
|
|
|
sxstride = GFC_DESCRIPTOR_STRIDE(source,0);
|
|
systride = GFC_DESCRIPTOR_STRIDE(source,1);
|
|
xcount = GFC_DESCRIPTOR_EXTENT(source,0);
|
|
ycount = GFC_DESCRIPTOR_EXTENT(source,1);
|
|
|
|
rxstride = GFC_DESCRIPTOR_STRIDE(ret,0);
|
|
rystride = GFC_DESCRIPTOR_STRIDE(ret,1);
|
|
|
|
rptr = ret->base_addr;
|
|
sptr = source->base_addr;
|
|
|
|
for (y=0; y < ycount; y++)
|
|
{
|
|
for (x=0; x < xcount; x++)
|
|
{
|
|
*rptr = *sptr;
|
|
|
|
sptr += sxstride;
|
|
rptr += rystride;
|
|
}
|
|
sptr += systride - (sxstride * xcount);
|
|
rptr += rxstride - (rystride * xcount);
|
|
}
|
|
}
|
|
|
|
#endif
|