mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 11:41:07 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/* Copyright (C) 1995, 1996, 1997 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <wchar.h>
|
|
|
|
|
|
/* Append no more than N wide-character of SRC onto DEST. */
|
|
wchar_t *
|
|
wcsncat (dest, src, n)
|
|
wchar_t *dest;
|
|
const wchar_t *src;
|
|
size_t n;
|
|
{
|
|
wchar_t c;
|
|
wchar_t * const s = dest;
|
|
|
|
/* Find the end of DEST. */
|
|
do
|
|
c = *dest++;
|
|
while (c != L'\0');
|
|
|
|
/* Make DEST point before next character, so we can increment
|
|
it while memory is read (wins on pipelined cpus). */
|
|
dest -= 2;
|
|
|
|
if (n >= 4)
|
|
{
|
|
size_t n4 = n >> 2;
|
|
do
|
|
{
|
|
c = *src++;
|
|
*++dest = c;
|
|
if (c == L'\0')
|
|
return s;
|
|
c = *src++;
|
|
*++dest = c;
|
|
if (c == L'\0')
|
|
return s;
|
|
c = *src++;
|
|
*++dest = c;
|
|
if (c == L'\0')
|
|
return s;
|
|
c = *src++;
|
|
*++dest = c;
|
|
if (c == L'\0')
|
|
return s;
|
|
} while (--n4 > 0);
|
|
n &= 3;
|
|
}
|
|
|
|
while (n > 0)
|
|
{
|
|
c = *src++;
|
|
*++dest = c;
|
|
if (c == L'\0')
|
|
return s;
|
|
n--;
|
|
}
|
|
|
|
if (c != L'\0')
|
|
*++dest = L'\0';
|
|
|
|
return s;
|
|
}
|