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[glibc.git] / wcsmbs / wcscat.c
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1 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <wchar.h>
23 /* Append SRC on the end of DEST. */
24 wchar_t *
25 wcscat (dest, src)
26 wchar_t *dest;
27 const wchar_t *src;
29 register wchar_t *s1 = dest;
30 register const wchar_t *s2 = src;
31 wchar_t c;
33 /* Find the end of the string. */
35 c = *s1++;
36 while (c != L'\0');
38 /* Make S1 point before the next character, so we can increment
39 it while memory is read (wins on pipelined cpus). */
40 s1 -= 2;
44 c = *s2++;
45 *++s1 = c;
47 while (c != L'\0');
49 return dest;