wcwidth man page on Kali

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WCWIDTH(3)		   Linux Programmer's Manual		    WCWIDTH(3)

NAME
       wcwidth - determine columns needed for a wide character

SYNOPSIS
       #define _XOPEN_SOURCE	   /* See feature_test_macros(7) */
       #include <wchar.h>

       int wcwidth(wchar_t c);

DESCRIPTION
       The  wcwidth()  function returns the number of columns needed to repre‐
       sent the wide character c.  If c is a  printable	 wide  character,  the
       value is at least 0.  If c is null wide character (L'\0'), the value is
       0.  Otherwise, -1 is returned.

RETURN VALUE
       The wcwidth() function returns the number of column positions for c.

ATTRIBUTES
       For  an	explanation  of	 the  terms  used   in	 this	section,   see
       attributes(7).

       ┌──────────┬───────────────┬────────────────┐
       │Interface │ Attribute	  │ Value	   │
       ├──────────┼───────────────┼────────────────┤
       │wcwidth() │ Thread safety │ MT-Safe locale │
       └──────────┴───────────────┴────────────────┘
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008.

       Note that glibc before 2.2.5 used the prototype

       int wcwidth(wint_t c);

NOTES
       The  behavior of wcwidth() depends on the LC_CTYPE category of the cur‐
       rent locale.

SEE ALSO
       iswprint(3), wcswidth(3)

COLOPHON
       This page is part of release 4.14 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
       https://www.kernel.org/doc/man-pages/.

GNU				  2017-09-15			    WCWIDTH(3)
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