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688903eb | 1 | /* Copyright (C) 1995-2018 Free Software Foundation, Inc. |
33a934a3 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
33a934a3 UD |
9 | |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
33a934a3 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
a482b5a5 | 18 | |
299a95b9 | 19 | #include <wchar.h> |
a482b5a5 | 20 | |
d626a24f SL |
21 | #ifdef WCSCAT |
22 | # define __wcscat WCSCAT | |
23 | #endif | |
a482b5a5 RM |
24 | |
25 | /* Append SRC on the end of DEST. */ | |
26 | wchar_t * | |
9d46370c | 27 | __wcscat (wchar_t *dest, const wchar_t *src) |
a482b5a5 | 28 | { |
2e09a79a JM |
29 | wchar_t *s1 = dest; |
30 | const wchar_t *s2 = src; | |
a482b5a5 RM |
31 | wchar_t c; |
32 | ||
33 | /* Find the end of the string. */ | |
34 | do | |
35 | c = *s1++; | |
36 | while (c != L'\0'); | |
37 | ||
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; | |
41 | ||
42 | do | |
43 | { | |
44 | c = *s2++; | |
45 | *++s1 = c; | |
46 | } | |
47 | while (c != L'\0'); | |
48 | ||
49 | return dest; | |
50 | } | |
d626a24f | 51 | #ifndef WCSCAT |
821a6bb4 | 52 | weak_alias (__wcscat, wcscat) |
d626a24f | 53 | #endif |