wctype()

define character class 

Function

SYNOPSIS

#include <wctype.h>

wctype_t wctype(const char *property);

DESCRIPTION

The wctype() function is defined for valid character class names defined in the current locale. The specified property is a string identifying a generic character class for which codeset-specific information is required. The following character classes are defined in all locales: 

"alnum"     "alpha"     "blank"     "cntrl"     "digit"
"graph"     "lower"     "print"     "punct"     "space"
"upper"     "xdigit"

The function returns a value of type wctype_t, which can be used as the second argument to subsequent calls to iswctype(). The wctype() function determines values of wctype_t according to the rules of the coded character set defined by character mapping information in the program's locale (category LC_CTYPE). The values returned by wctype() are valid until a call to setlocale() that modifies the category LC_CTYPE.

PARAMETERS

property 

Is a character class name defining a class descriptor to be returned.

RETURN VALUES

On success, wctype() returns a non-zero object of type wctype_t that can be used in calls to iswctype() Otherwise it returns 0.

CONFORMANCE

ANSI/ISO 9899-1990/AM 1-1995

MULTITHREAD SAFETY LEVEL

MT-Safe, with exceptions.

This function is MT-Safe as long as no thread calls setlocale() while this function is executing.

PORTING ISSUES

None.

AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
iswctype(), setlocale()

MKS Toolkit 9.3 Documentation Build 6.