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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [generated/] [transpose_r8.c] - Blame information for rev 733

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1 733 jeremybenn
/* Implementation of the TRANSPOSE intrinsic
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   Copyright 2003, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
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   Contributed by Tobias Schlüter
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
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<http://www.gnu.org/licenses/>.  */
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#include "libgfortran.h"
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#include <assert.h>
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#if defined (HAVE_GFC_REAL_8)
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extern void transpose_r8 (gfc_array_r8 * const restrict ret,
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        gfc_array_r8 * const restrict source);
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export_proto(transpose_r8);
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void
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transpose_r8 (gfc_array_r8 * const restrict ret,
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        gfc_array_r8 * const restrict source)
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{
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  /* r.* indicates the return array.  */
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  index_type rxstride, rystride;
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  GFC_REAL_8 * restrict rptr;
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  /* s.* indicates the source array.  */
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  index_type sxstride, systride;
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  const GFC_REAL_8 *sptr;
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  index_type xcount, ycount;
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  index_type x, y;
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  assert (GFC_DESCRIPTOR_RANK (source) == 2);
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  if (ret->data == NULL)
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    {
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      assert (GFC_DESCRIPTOR_RANK (ret) == 2);
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      assert (ret->dtype == source->dtype);
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      GFC_DIMENSION_SET(ret->dim[0], 0, GFC_DESCRIPTOR_EXTENT(source,1) - 1,
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                        1);
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      GFC_DIMENSION_SET(ret->dim[1], 0, GFC_DESCRIPTOR_EXTENT(source,0) - 1,
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                        GFC_DESCRIPTOR_EXTENT(source, 1));
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      ret->data = internal_malloc_size (sizeof (GFC_REAL_8) * size0 ((array_t *) ret));
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      ret->offset = 0;
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    } else if (unlikely (compile_options.bounds_check))
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    {
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      index_type ret_extent, src_extent;
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      ret_extent = GFC_DESCRIPTOR_EXTENT(ret,0);
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      src_extent = GFC_DESCRIPTOR_EXTENT(source,1);
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      if (src_extent != ret_extent)
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        runtime_error ("Incorrect extent in return value of TRANSPOSE"
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                       " intrinsic in dimension 1: is %ld,"
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                       " should be %ld", (long int) src_extent,
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                       (long int) ret_extent);
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      ret_extent = GFC_DESCRIPTOR_EXTENT(ret,1);
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      src_extent = GFC_DESCRIPTOR_EXTENT(source,0);
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      if (src_extent != ret_extent)
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        runtime_error ("Incorrect extent in return value of TRANSPOSE"
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                       " intrinsic in dimension 2: is %ld,"
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                       " should be %ld", (long int) src_extent,
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                       (long int) ret_extent);
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    }
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  sxstride = GFC_DESCRIPTOR_STRIDE(source,0);
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  systride = GFC_DESCRIPTOR_STRIDE(source,1);
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  xcount = GFC_DESCRIPTOR_EXTENT(source,0);
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  ycount = GFC_DESCRIPTOR_EXTENT(source,1);
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  rxstride = GFC_DESCRIPTOR_STRIDE(ret,0);
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  rystride = GFC_DESCRIPTOR_STRIDE(ret,1);
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  rptr = ret->data;
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  sptr = source->data;
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  for (y=0; y < ycount; y++)
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    {
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      for (x=0; x < xcount; x++)
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        {
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          *rptr = *sptr;
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          sptr += sxstride;
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          rptr += rystride;
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        }
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        sptr += systride - (sxstride * xcount);
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        rptr += rxstride - (rystride * xcount);
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    }
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}
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#endif

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