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/* Move half-word library function.
Copyright (C) 2000-2013 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 3, 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.
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/>. */
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];
}
}
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