.\" Dinkumware C library reference http://www.dinkumware.com/
.\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
.\"
-.TH WCWIDTH 3 2011-09-28 "GNU" "Linux Programmer's Manual"
+.TH WCWIDTH 3 2014-01-22 "GNU" "Linux Programmer's Manual"
.SH NAME
wcwidth \- determine columns needed for a wide character
.SH SYNOPSIS
If
.I c
is null wide character (L\(aq\\0\(aq), the value is 0.
-Otherwise \-1 is returned.
+Otherwise, \-1 is returned.
.SH RETURN VALUE
The
.BR wcwidth ()
function returns the number of
column positions for
.IR c .
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR wcwidth ()
+function is thread-safe with exceptions.
+It can be safely used in multithreaded applications, as long as
+.BR setlocale (3)
+is not called to change the locale during its execution.
.SH CONFORMING TO
POSIX.1-2001.
.SH SEE ALSO
.BR iswprint (3),
.BR wcswidth (3)
+.SH COLOPHON
+This page is part of release 3.79 of the Linux
+.I 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/.