NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

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

NAME         top

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

SYNOPSIS         top

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

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

DESCRIPTION         top

       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         top

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

ATTRIBUTES         top

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

       ┌───────────┬───────────────┬────────────────┐
       │Interface  Attribute     Value          │
       ├───────────┼───────────────┼────────────────┤
       │wcswidth() │ Thread safety │ MT-Safe locale │
       └───────────┴───────────────┴────────────────┘

CONFORMING TO         top

       POSIX.1-2001, POSIX.1-2008.

NOTES         top

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

SEE ALSO         top

       iswprint(3), wcwidth(3)

COLOPHON         top

       This page is part of release 4.13 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/.

GNU                              2015-08-08                      WCSWIDTH(3)

Pages that refer to this page: wcwidth(3)utf-8(7)