1/* Implementation of the RESHAPE intrinsic for packed arrays
2   Copyright (C) 2002-2020 Free Software Foundation, Inc.
3   Contributed by Paul Brook <paul@nowt.org>
4
5This file is part of the GNU Fortran 95 runtime library (libgfortran).
6
7Libgfortran is free software; you can redistribute it and/or
8modify it under the terms of the GNU General Public
9License as published by the Free Software Foundation; either
10version 3 of the License, or (at your option) any later version.
11
12Ligbfortran is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
24<http://www.gnu.org/licenses/>.  */
25
26#include "libgfortran.h"
27
28#include <string.h>
29
30/* Reshape function where all arrays are packed.  Basically just memcpy.  */
31
32void
33reshape_packed (char * restrict ret, index_type rsize, const char * source,
34		index_type ssize, const char * pad, index_type psize)
35{
36  index_type size;
37
38  size = (rsize > ssize) ? ssize : rsize;
39  memcpy (ret, source, size);
40  ret += size;
41  rsize -= size;
42  while (rsize > 0)
43    {
44      size = (rsize > psize) ? psize : rsize;
45      memcpy (ret, pad, size);
46      ret += size;
47      rsize -= size;
48    }
49}
50