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/* wcscpy.c - Wide Character Copy for POWER6+.
Copyright (C) 2012-2019 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; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#include <stddef.h>
#include <wchar.h>
#ifndef WCSCPY
# define WCSCPY wcscpy
#endif
/* Copy SRC to DEST. */
wchar_t *
WCSCPY (wchar_t *dest, const wchar_t *src)
{
wint_t c,d;
wchar_t *wcp, *wcp2;
if (__alignof__ (wchar_t) >= sizeof (wchar_t))
{
const ptrdiff_t off = dest - src;
wcp = (wchar_t *) src;
wcp2 = wcp + 1 ;
do
{
d = *wcp;
wcp[off] = d;
if (d == L'\0')
return dest;
wcp += 2;
c = *wcp2;
wcp2[off] = c;
if (c == L'\0')
return dest;
wcp2 += 2;
d = *wcp;
wcp[off] = d;
if (d == L'\0')
return dest;
wcp += 2;
c = *wcp2;
wcp2[off] = c;
if (c == L'\0')
return dest;
wcp2 += 2;
d = *wcp;
wcp[off] = d;
if (d == L'\0')
return dest;
wcp += 2;
c = *wcp2;
wcp2[off] = c;
if (c == L'\0')
return dest;
wcp2 += 2;
d = *wcp;
wcp[off] = d;
if (d == L'\0')
return dest;
wcp += 2;
c = *wcp2;
wcp2[off] = c;
if (c == L'\0')
return dest;
wcp2 += 2;
}
while (c != L'\0');
}
else
{
wcp = dest;
do
{
c = *src++;
*wcp++ = c;
}
while (c != L'\0');
}
return dest;
}
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