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106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
/* wcscpy.c - Wide Character Copy for POWER6+.
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Copyright (C) 2012-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <http://www.gnu.org/licenses/>. */
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#include <stddef.h>
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#include <wchar.h>
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#ifndef WCSCPY
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# define WCSCPY wcscpy
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#endif
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/* Copy SRC to DEST. */
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wchar_t *
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WCSCPY (wchar_t *dest, const wchar_t *src)
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{
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wint_t c,d;
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wchar_t *wcp, *wcp2;
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if (__alignof__ (wchar_t) >= sizeof (wchar_t))
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{
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const ptrdiff_t off = dest - src;
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wcp = (wchar_t *) src;
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wcp2 = wcp + 1 ;
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do
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{
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d = *wcp;
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wcp[off] = d;
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if (d == L'\0')
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return dest;
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wcp += 2;
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c = *wcp2;
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wcp2[off] = c;
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if (c == L'\0')
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return dest;
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wcp2 += 2;
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d = *wcp;
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wcp[off] = d;
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if (d == L'\0')
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return dest;
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wcp += 2;
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c = *wcp2;
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wcp2[off] = c;
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if (c == L'\0')
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return dest;
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wcp2 += 2;
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d = *wcp;
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wcp[off] = d;
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if (d == L'\0')
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return dest;
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wcp += 2;
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c = *wcp2;
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wcp2[off] = c;
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if (c == L'\0')
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return dest;
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wcp2 += 2;
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d = *wcp;
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wcp[off] = d;
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if (d == L'\0')
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return dest;
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wcp += 2;
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c = *wcp2;
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wcp2[off] = c;
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if (c == L'\0')
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return dest;
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wcp2 += 2;
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}
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while (c != L'\0');
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}
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else
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{
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wcp = dest;
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do
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{
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c = *src++;
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*wcp++ = c;
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}
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while (c != L'\0');
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}
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return dest;
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}
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