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+'\" t
+.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
+.\"
+.\" SPDX-License-Identifier: GPL-2.0-or-later
+.\"
+.\" References consulted:
+.\"   GNU glibc-2 source code and manual
+.\"   Dinkumware C library reference http://www.dinkumware.com/
+.\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
+.\"   ISO/IEC 9899:1999
+.\"
+.TH wctype 3 (date) "Linux man-pages (unreleased)"
+.SH NAME
+wctype \- wide-character classification
+.SH LIBRARY
+Standard C library
+.RI ( libc ", " \-lc )
+.SH SYNOPSIS
+.nf
+.B #include <wctype.h>
+.P
+.BI "wctype_t wctype(const char *" name );
+.fi
+.SH DESCRIPTION
+The
+.I wctype_t
+type represents a property which a wide character may or
+may not have.
+In other words, it represents a class of wide characters.
+This type's nature is implementation-dependent, but the special value
+.I "(wctype_t) 0"
+denotes an invalid property.
+Nonzero
+.I wctype_t
+values
+can be passed to the
+.BR iswctype (3)
+function
+to actually test whether a given
+wide character has the property.
+.P
+The
+.BR wctype ()
+function returns a property, given by its name.
+The set of
+valid names depends on the
+.B LC_CTYPE
+category of the current locale, but the
+following names are valid in all locales.
+.P
+.nf
+    "alnum" \- realizes the \fBisalnum\fP(3) classification function
+    "alpha" \- realizes the \fBisalpha\fP(3) classification function
+    "blank" \- realizes the \fBisblank\fP(3) classification function
+    "cntrl" \- realizes the \fBiscntrl\fP(3) classification function
+    "digit" \- realizes the \fBisdigit\fP(3) classification function
+    "graph" \- realizes the \fBisgraph\fP(3) classification function
+    "lower" \- realizes the \fBislower\fP(3) classification function
+    "print" \- realizes the \fBisprint\fP(3) classification function
+    "punct" \- realizes the \fBispunct\fP(3) classification function
+    "space" \- realizes the \fBisspace\fP(3) classification function
+    "upper" \- realizes the \fBisupper\fP(3) classification function
+    "xdigit" \- realizes the \fBisxdigit\fP(3) classification function
+.fi
+.SH RETURN VALUE
+The
+.BR wctype ()
+function returns a property descriptor
+if the
+.I name
+is valid.
+Otherwise, it returns
+.IR "(wctype_t) 0" .
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbx lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.na
+.nh
+.BR wctype ()
+T}	Thread safety	MT-Safe locale
+.TE
+.SH STANDARDS
+C11, POSIX.1-2008.
+.SH HISTORY
+POSIX.1-2001, C99.
+.SH NOTES
+The behavior of
+.BR wctype ()
+depends on the
+.B LC_CTYPE
+category of the
+current locale.
+.SH SEE ALSO
+.BR iswctype (3)