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/* Move half-word library function.

   Copyright (C) 2000, 2003 Free Software Foundation, Inc.

   Contributed by Red Hat, Inc.

   This file is part of GCC.

   GCC 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 2, or (at your option)

   any later version.

   GCC 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.

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

   along with GCC; see the file COPYING.  If not, write to

   the Free Software Foundation, 51 Franklin Street, Fifth Floor,

   Boston, MA 02110-1301, USA.  */

/* As a special exception, if you link this library with other files,

   some of which are compiled with GCC, to produce an executable,

   this library does not by itself cause the resulting executable

   to be covered by the GNU General Public License.

   This exception does not however invalidate any other reasons why

   the executable file might be covered by the GNU General Public License.  */

void

__cmovh (short *dest, const short *src, unsigned len)

{

  unsigned i;

  unsigned num = len >> 1;

  char *dest_byte = (char *)dest;

  const char *src_byte = (const char *)src;

  if (dest_byte < src_byte || dest_byte > src_byte+len)

    {

      for (i = 0; i < num; i++)

        dest[i] = src[i];

      if ((len & 1) != 0)

        dest_byte[len-1] = src_byte[len-1];

    }

  else

    {

      while (len-- > 0)

        dest_byte[len] = src_byte[len];

    }

}