WCTYPE(3C)WCTYPE(3C)NAMEwctype - define character class
SYNOPSIS
#include <wchar.h>
wctype_t wctype(const char *charclass);
DESCRIPTION
The wctype() function is defined for valid character class names as
defined in the current locale. The charclass is a string identifying a
generic character class for which codeset-specific type information is
required. The following character class names are defined in all
locales:
alnum alpha blank
cntrl digit graph
lower print punct
space upper xdigit
Additional character class names defined in the locale definition file
(category LC_CTYPE) can also be specified.
The function returns a value of type wctype_t, which can be used as the
second argument to subsequent calls of iswctype(3C). wctype() deter‐
mines values of wctype_t according to the rules of the coded character
set defined by character type information in the program's locale (cat‐
egory LC_CTYPE). The values returned by wctype() are valid until a call
to setlocale(3C) that modifies the category LC_CTYPE.
RETURN VALUES
The wctype() function returns 0 if the given character class name is
not valid for the current locale (category LC_CTYPE); otherwise it
returns an object of type wctype_t that can be used in calls to iswc‐
type().
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────────────┤
│CSI │ Enabled │
├────────────────────┼─────────────────────────┤
│Interface Stability │ Standard │
├────────────────────┼─────────────────────────┤
│MT-Level │ MT-Safe with exceptions │
└────────────────────┴─────────────────────────┘
SEE ALSOiswctype(3C), setlocale(3C), attributes(5), standards(5)
Aug 14, 2002 WCTYPE(3C)
