minix/lib/libc/string/wcsncasecmp.c

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/* $NetBSD: wcsncasecmp.c,v 1.4 2013/05/17 12:55:57 joerg Exp $ */
/*
* Copyright (C) 2006 Aleksey Cheusov
*
* This material is provided "as is", with absolutely no warranty expressed
* or implied. Any use is at your own risk.
*
* Permission to use or copy this software for any purpose is hereby granted
* without fee. Permission to modify the code and to distribute modified
* code is also granted without any restrictions.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: wcsncasecmp.c,v 1.4 2013/05/17 12:55:57 joerg Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <assert.h>
#include <wchar.h>
#include <wctype.h>
#include <locale.h>
#include "setlocale_local.h"
__weak_alias(wcsncasecmp,_wcsncasecmp)
__weak_alias(wcsncasecmp_l,_wcsncasecmp_l)
int
wcsncasecmp_l(const wchar_t *s1, const wchar_t *s2, size_t n, locale_t loc)
{
int lc1 = 0;
int lc2 = 0;
int diff = 0;
_DIAGASSERT(s1);
_DIAGASSERT(s2);
while (n--) {
lc1 = towlower_l(*s1, loc);
lc2 = towlower_l(*s2, loc);
diff = lc1 - lc2;
if (diff)
return diff;
if (!lc1)
return 0;
++s1;
++s2;
}
return 0;
}
int
wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n)
{
return wcsncasecmp_l(s1, s2, n, _current_locale());
}