--- /dev/null
+/* Copyright (C) 1996-2018 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 C99 Standard: 7.25
+ * Wide character classification and mapping utilities <wctype.h>
+ */
+
+#ifndef _WCTYPE_H
+#define _WCTYPE_H 1
+
+#include <features.h>
+#include <bits/types.h>
+#include <bits/types/wint_t.h>
+
+/* Constant expression of type `wint_t' whose value does not correspond
+ to any member of the extended character set. */
+#ifndef WEOF
+# define WEOF (0xffffffffu)
+#endif
+
+/* Some definitions from this header also appear in <wchar.h> in
+ Unix98 mode. */
+#include <bits/wctype-wchar.h>
+
+/*
+ * Extensible wide-character mapping functions: 7.15.3.2.
+ */
+
+__BEGIN_DECLS
+
+/* Scalar type that can hold values which represent locale-specific
+ character mappings. */
+typedef const __int32_t *wctrans_t;
+
+/* Construct value that describes a mapping between wide characters
+ identified by the string argument PROPERTY. */
+extern wctrans_t wctrans (const char *__property) __THROW;
+
+/* Map the wide character WC using the mapping described by DESC. */
+extern wint_t towctrans (wint_t __wc, wctrans_t __desc) __THROW;
+
+# ifdef __USE_XOPEN2K8
+/* POSIX.1-2008 extended locale interface (see locale.h). */
+# include <bits/types/locale_t.h>
+
+/* Test for any wide character for which `iswalpha' or `iswdigit' is
+ true. */
+extern int iswalnum_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character for which `iswupper' or 'iswlower' is
+ true, or any wide character that is one of a locale-specific set of
+ wide-characters for which none of `iswcntrl', `iswdigit',
+ `iswpunct', or `iswspace' is true. */
+extern int iswalpha_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any control wide character. */
+extern int iswcntrl_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character that corresponds to a decimal-digit
+ character. */
+extern int iswdigit_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character for which `iswprint' is true and
+ `iswspace' is false. */
+extern int iswgraph_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character that corresponds to a lowercase letter
+ or is one of a locale-specific set of wide characters for which
+ none of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
+extern int iswlower_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any printing wide character. */
+extern int iswprint_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any printing wide character that is one of a
+ locale-specific et of wide characters for which neither `iswspace'
+ nor `iswalnum' is true. */
+extern int iswpunct_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character that corresponds to a locale-specific
+ set of wide characters for which none of `iswalnum', `iswgraph', or
+ `iswpunct' is true. */
+extern int iswspace_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character that corresponds to an uppercase letter
+ or is one of a locale-specific set of wide character for which none
+ of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
+extern int iswupper_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character that corresponds to a hexadecimal-digit
+ character equivalent to that performed be the functions described
+ in the previous subclause. */
+extern int iswxdigit_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Test for any wide character that corresponds to a standard blank
+ wide character or a locale-specific set of wide characters for
+ which `iswalnum' is false. */
+extern int iswblank_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Construct value that describes a class of wide characters identified
+ by the string argument PROPERTY. */
+extern wctype_t wctype_l (const char *__property, locale_t __locale)
+ __THROW;
+
+/* Determine whether the wide-character WC has the property described by
+ DESC. */
+extern int iswctype_l (wint_t __wc, wctype_t __desc, locale_t __locale)
+ __THROW;
+
+/*
+ * Wide-character case-mapping functions.
+ */
+
+/* Converts an uppercase letter to the corresponding lowercase letter. */
+extern wint_t towlower_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Converts an lowercase letter to the corresponding uppercase letter. */
+extern wint_t towupper_l (wint_t __wc, locale_t __locale) __THROW;
+
+/* Construct value that describes a mapping between wide characters
+ identified by the string argument PROPERTY. */
+extern wctrans_t wctrans_l (const char *__property, locale_t __locale)
+ __THROW;
+
+/* Map the wide character WC using the mapping described by DESC. */
+extern wint_t towctrans_l (wint_t __wc, wctrans_t __desc,
+ locale_t __locale) __THROW;
+
+# endif /* Use POSIX 2008. */
+
+__END_DECLS
+
+#endif /* wctype.h */
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