Manpages - wcwidth.3
Table of Contents
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 represent 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 current locale.
SEE ALSO
*iswprint*(3), *wcswidth*(3)
COLOPHON
This page is part of release 5.13 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/.