wcwidth3
Determine columns needed for a wide character
Usage
#define _XOPEN_SOURCE /* See feature_test_macros(7) */ #include <wchar.h>
int wcwidth(wchar_t wc);
Library
Standard C library (libc, -lc)
Overview
The wcwidth() function returns the number of columns needed to represent the wide character wc. If wc is a printable wide character, the value is at least 0. If wc 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 wc.
Attributes
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| wcwidth() | Thread safety | MT-Safe locale |
Notes
The behavior of wcwidth() depends on the LC_CTYPE category of the current locale.
Releases
14 releases since Debian 2.2 (Potato); the text changed 13 times.