Linux.com

iswcntrl.3

ISWCNTRL

Section: Linux Programmer's Manual (3)
Updated: 1999-07-25
Index Return to Main Contents
 

NAME

iswcntrl - test for control wide character  

SYNOPSIS

#include <wctype.h>

int iswcntrl(wint_t wc);
 

DESCRIPTION

The iswcntrl() function is the wide-character equivalent of the iscntrl(3) function. It tests whether wc is a wide character belonging to the wide-character class "cntrl".

The wide-character class "cntrl" is disjoint from the wide-character class "print" and therefore also disjoint from its subclasses "graph", "alpha", "upper", "lower", "digit", "xdigit", "punct".

For an unsigned char c, iscntrl(c) implies iswcntrl(btowc(c)), but not vice versa.  

RETURN VALUE

The iswcntrl() function returns non-zero if wc is a wide character belonging to the wide-character class "cntrl". Otherwise it returns zero.  

CONFORMING TO

C99.  

NOTES

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

SEE ALSO

iscntrl(3), iswctype(3)  

COLOPHON

This page is part of release 3.21 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
NOTES
SEE ALSO
COLOPHON

 

Comments

Subscribe to Comments Feed

Upcoming Linux Foundation Courses

  1. LFS426 Linux Performance Tuning
    21 Apr » 24 Apr - Virtual
    Details
  2. LFS520 OpenStack Cloud Architecture and Deployment
    05 May » 09 May - Virtual
    Details
  3. LFD320 Linux Kernel Internals and Debugging
    12 May » 16 May - Virtual
    Details

View All Upcoming Courses

Become an Individual Member
Check out the Friday Funnies

Sign Up For the Linux.com Newsletter


Who we are ?

The Linux Foundation is a non-profit consortium dedicated to the growth of Linux.

More About the foundation...

Frequent Questions

Join / Linux Training / Board