wctype()

Updated: May 06, 2022

Define a wide-character class

Synopsis:

#include <wctype.h>

wctype_t wctype( const char * property );

Arguments:

property
A string that defines the property of the class; see below.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The wctype() function determines a classification rule for wide-character codes according to the category LC_CTYPE, particularly for use with iswctype().

Some classes are defined in all locales, although additional classes may be defined for LC_CTYPE. Use setlocale() to modify the category LC_CTYPE.

Defined Classes:

Returns:

A wctype_t object that you can use in a call to iswctype(), or 0 if the character class name isn't valid for the current locale.

Classification:

ANSI, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler Yes
Signal handler Yes
Thread Yes