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.\" Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
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.Dd $Mdocdate: September 5 2017 $
.Dt WCTYPE 3
.Os
.Sh NAME
.Nm wctype ,
.Nm wctype_l
.Nd get a character class identifier by name
.Sh SYNOPSIS
.In wctype.h
.Ft wctype_t
.Fn wctype "const char *charclass"
.Ft wctype_t
.Fn wctype_l "const char *charclass" "locale_t locale"
.Sh DESCRIPTION
These functions return a character class identifier
corresponding to the locale-specific character class name
.Fa charclass .
This identifier can be used in subsequent calls of
.Fn iswctype
or
.Fn iswctype_l ,
respectively.
.Pp
The following names are defined in all locales:
.Bd -literal -offset indent
alnum alpha blank cntrl digit graph
lower print punct space upper xdigit
.Ed
.Pp
The function
.Fn wctype_l
uses the specified
.Fa locale ,
whereas
.Fn wctype
uses the thread-specific locale set with
.Xr uselocale 3 ,
falling back to the global locale set with
.Xr setlocale 3 .
.Sh RETURN VALUES
These functions return the character class identifier, or
.Po Vt wctype_t Pc Ns 0
if
.Fa charclass
does not correspond to a valid character class name.
.Sh SEE ALSO
.Xr iswctype 3 ,
.Xr newlocale 3 ,
.Xr setlocale 3 ,
.Xr wctrans 3
.Sh STANDARDS
The
.Fn wctype
function conforms to
.St -isoC-amd1 ,
and
.Fn wctype_l
to
.St -p1003.1-2008 .
.Sh HISTORY
The
.Fn wctype
function has been available since
.Ox 3.8 ,
and
.Fn wctype_l
since
.Ox 6.2 .