Subversion Repositories openrisc

/* Implementation of the TRANSPOSE intrinsic
   Copyright 2003, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
   Contributed by Tobias Schl�ter
 
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 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_COMPLEX_8)
 
extern void transpose_c8 (gfc_array_c8 * const restrict ret, 
	gfc_array_c8 * const restrict source);
export_proto(transpose_c8);
 
void
transpose_c8 (gfc_array_c8 * const restrict ret, 
	gfc_array_c8 * const restrict source)
{
  /* r.* indicates the return array.  */
  index_type rxstride, rystride;
  GFC_COMPLEX_8 * restrict rptr;
  /* s.* indicates the source array.  */
  index_type sxstride, systride;
  const GFC_COMPLEX_8 *sptr;
 
  index_type xcount, ycount;
  index_type x, y;
 
  assert (GFC_DESCRIPTOR_RANK (source) == 2);
 
  if (ret->data == 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->data = internal_malloc_size (sizeof (GFC_COMPLEX_8) * size0 ((array_t *) ret));
      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->data;
  sptr = source->data;
 
  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