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3. Library calls (functions within program libraries)

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WCTYPE

Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
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NAME

wctype - wide-character classification  

SYNOPSIS

#include <wctype.h>

wctype_t wctype(const char *name);
 

DESCRIPTION

The 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 (wctype_t) 0 denotes an invalid property. Nonzero wctype_t values can be passed to the iswctype(3) function to actually test whether a given wide character has the property.

The wctype() function returns a property, given by its name. The set of valid names depends on the LC_CTYPE category of the current locale, but the following names are valid in all locales.

  "alnum" - realizes the isalnum(3) classification function
  "alpha" - realizes the isalpha(3) classification function
  "blank" - realizes the isblank(3) classification function
  "cntrl" - realizes the iscntrl(3) classification function
  "digit" - realizes the isdigit(3) classification function
  "graph" - realizes the isgraph(3) classification function
  "lower" - realizes the islower(3) classification function
  "print" - realizes the isprint(3) classification function
  "punct" - realizes the ispunct(3) classification function
  "space" - realizes the isspace(3) classification function
  "upper" - realizes the isupper(3) classification function
  "xdigit" - realizes the isxdigit(3) classification function
 

RETURN VALUE

The wctype() function returns a property descriptor if the name is valid. Otherwise, it returns (wctype_t) 0.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
wctype() Thread safetyMT-Safe locale
 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008, C99.  

NOTES

The behavior of wctype() depends on the LC_CTYPE category of the current locale.  

SEE ALSO

iswctype(3)  

COLOPHON

This page is part of release 4.04 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
CONFORMING TO
NOTES
SEE ALSO
COLOPHON

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