mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-16 08:00:05 +00:00
ddf21ec79f
This patch rewrites wcsncat using wcslen, wcsnlen, and wmemcpy. This is similar to the optimization done on strncat by3eb38795dbande80514b5a8. Checked on x86_64-linux-gnu. * wcsmbs/wcsncat.c (wcsncat): Rewrite using wcslen, wcsnlen, and wmemcpy.
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/* Copyright (C) 1995-2019 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <wchar.h>
|
|
|
|
#ifndef WCSNCAT
|
|
# define WCSNCAT wcsncat
|
|
#endif
|
|
|
|
/* Append no more than N wide-character of SRC onto DEST. */
|
|
wchar_t *
|
|
WCSNCAT (wchar_t *dest, const wchar_t *src, size_t n)
|
|
{
|
|
wchar_t *ret = dest;
|
|
|
|
/* Find the end of dest. */
|
|
dest += __wcslen (dest);
|
|
|
|
size_t ds = __wcsnlen (src, n);
|
|
|
|
dest[ds] = L'\0';
|
|
__wmemcpy (dest, src, ds);
|
|
|
|
return ret;
|
|
}
|