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.
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
|
|
|
|
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>
|
|
|
|
wchar_t *
|
|
wmemchr (s, c, n)
|
|
register const wchar_t *s;
|
|
register wchar_t c;
|
|
register size_t n;
|
|
{
|
|
/* For performance reasons unfold the loop four times. */
|
|
while (n >= 4)
|
|
{
|
|
if (s[0] == c)
|
|
return (wchar_t *) s;
|
|
if (s[1] == c)
|
|
return (wchar_t *) &s[1];
|
|
if (s[2] == c)
|
|
return (wchar_t *) &s[2];
|
|
if (s[3] == c)
|
|
return (wchar_t *) &s[3];
|
|
s += 4;
|
|
n -= 4;
|
|
}
|
|
|
|
if (n > 0)
|
|
{
|
|
if (*s == c)
|
|
return (wchar_t *) s;
|
|
++s;
|
|
--n;
|
|
}
|
|
if (n > 0)
|
|
{
|
|
if (*s == c)
|
|
return (wchar_t *) s;
|
|
++s;
|
|
--n;
|
|
}
|
|
if (n > 0)
|
|
if (*s == c)
|
|
return (wchar_t *) s;
|
|
|
|
return NULL;
|
|
}
|