wcswidth

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



NAME
       wcswidth - determine columns needed for a fixed-size wide-character
       string

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

       int wcswidth(const wchar_t *s, size_t n);

DESCRIPTION
       The wcswidth() function returns the number of columns needed to represent
       the wide-character string pointed to by s, but at most n wide characters.
       If a nonprintable wide character occurs among these characters, -1 is
       returned.

RETURN VALUE
       The wcswidth() function returns the number of column positions for the
       wide-character string s, truncated to at most length n.

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

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

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

SEE ALSO
       iswprint(3), wcwidth(3)

COLOPHON
       This page is part of release 5.09 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                                2015-08-08                        WCSWIDTH(3)