wcswidth — determine columns needed for a fixed-size wide-character string
#define _XOPEN_SOURCE /* See feature_test_macros(7) */ #include <wchar.h>
int
wcswidth( |
const wchar_t *s, |
size_t n); |
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.
The wcswidth() function
returns the number of column positions for the wide-character
string s, truncated
to at most length n.
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
wcswidth() |
Thread safety | MT-Safe locale |
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Copyright (c) Bruno Haible <haibleclisp.cons.org> %%%LICENSE_START(GPLv2+_DOC_ONEPARA) 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. %%%LICENSE_END 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 |