/* Copyright (C) 1992-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <unistd.h>

void

swab (const void *bfrom, void *bto, ssize_t n)

{

  const char *from = (const char *) bfrom;

  char *to = (char *) bto;

  n &= ~((ssize_t) 1);

  while (n > 1)

    {

      const char b0 = from[--n], b1 = from[--n];

      to[n] = b0;

      to[n + 1] = b1;

    }

}