Name
wcswidth — determine columns needed for a fixed-size
wide-character string
Synopsis
#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
non-printable 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.
CONFORMING TO
POSIX.1-2001.
NOTES
The behaviour of wcswidth()
depends on the LC_CTYPE category of the current locale.
SEE ALSO
iswprint(3), wcwidth(3)
Copyright (c) Bruno Haible <haible@clisp.cons.org>
This is free documentation; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
References consulted:
GNU glibc-2 source code and manual
Dinkumware C library reference http://www.dinkumware.com/
OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
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