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/* Copyright (C) 1995-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
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
<https://www.gnu.org/licenses/>. */
#include <wchar.h>
#include <loop_unroll.h>
#ifdef WCSCPY
# define __wcscpy WCSCPY
#endif
/* Copy SRC to DEST. */
wchar_t *
__wcscpy (wchar_t *dest, const wchar_t *src)
{
#ifndef UNROLL_NTIMES
return __wmemcpy (dest, src, __wcslen (src) + 1);
#else
/* Some architectures might have costly tail function call (powerpc
for instance) where wmemcpy call overhead for smalls sizes might
be more costly than just unrolling the main loop. */
wchar_t *wcp = dest;
#define ITERATION(index) \
({ \
wchar_t c = *src++; \
*wcp++ = c; \
c != L'\0'; \
})
while (1)
UNROLL_REPEAT(UNROLL_NTIMES, ITERATION);
return dest;
#endif
}
#ifndef WCSCPY
weak_alias (__wcscpy, wcscpy)
libc_hidden_def (__wcscpy)
#endif
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