--- /dev/null
+/* Copyright (C) 2011-2018 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 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/>. */
+
+/*
+ * ISO C11 Standard: 7.28
+ * Unicode utilities <uchar.h>
+ */
+
+#ifndef _UCHAR_H
+#define _UCHAR_H 1
+
+#include <features.h>
+
+#define __need_size_t
+#include <stddef.h>
+
+#include <bits/types.h>
+#include <bits/types/mbstate_t.h>
+
+#ifndef __USE_ISOCXX11
+/* Define the 16-bit and 32-bit character types. */
+typedef __uint_least16_t char16_t;
+typedef __uint_least32_t char32_t;
+#endif
+
+
+__BEGIN_DECLS
+
+/* Write char16_t representation of multibyte character pointed
+ to by S to PC16. */
+extern size_t mbrtoc16 (char16_t *__restrict __pc16,
+ const char *__restrict __s, size_t __n,
+ mbstate_t *__restrict __p) __THROW;
+
+/* Write multibyte representation of char16_t C16 to S. */
+extern size_t c16rtomb (char *__restrict __s, char16_t __c16,
+ mbstate_t *__restrict __ps) __THROW;
+
+
+
+/* Write char32_t representation of multibyte character pointed
+ to by S to PC32. */
+extern size_t mbrtoc32 (char32_t *__restrict __pc32,
+ const char *__restrict __s, size_t __n,
+ mbstate_t *__restrict __p) __THROW;
+
+/* Write multibyte representation of char32_t C32 to S. */
+extern size_t c32rtomb (char *__restrict __s, char32_t __c32,
+ mbstate_t *__restrict __ps) __THROW;
+
+__END_DECLS
+
+#endif /* uchar.h */