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-rw-r--r--wcsmbs/wcsncase.c55
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diff --git a/wcsmbs/wcsncase.c b/wcsmbs/wcsncase.c
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+/* Compare at most N wide characters of two strings without taking care
+   for the case.
+   Copyright (C) 1992, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <wchar.h>
+#include <wctype.h>
+
+#ifndef weak_alias
+# define __wcsncasecmp wcsncasecmp
+#endif
+
+/* Compare no more than N wide characters of S1 and S2,
+   ignoring case, returning less than, equal to or
+   greater than zero if S1 is lexicographically less
+   than, equal to or greater than S2.  */
+int
+__wcsncasecmp (s1, s2, n)
+     const wchar_t *s1;
+     const wchar_t *s2;
+     size_t n;
+{
+  wint_t c1, c2;
+
+  if (s1 == s2 || n == 0)
+    return 0;
+
+  do
+    {
+      c1 = (wint_t) towlower (*s1++);
+      c2 = (wint_t) towlower (*s2++);
+      if (c1 == L'\0' || c1 != c2)
+	return c1 - c2;
+    } while (--n > 0);
+
+  return c1 - c2;
+}
+#ifdef weak_alias
+weak_alias (__wcsncasecmp, wcsncasecmp)
+#endif