wcwidth(3C) Standard C Library Functions wcwidth(3C)
NAME
wcwidth - number of column positions of a wide-character code
SYNOPSIS
#include <wchar.h>
int wcwidth(wchar_t wc);
DESCRIPTION
The wcwidth() function determines the number of column positions required for the wide character wc. The value of wc must be a character
representable as a wchar_t, and must be a wide-character code corresponding to a valid character in the current locale.
RETURN VALUES
The wcwidth() function either returns 0 (if wc is a null wide-character code), or returns the number of column positions to be occupied by
the wide-character code wc, or returns -1 (if wc does not correspond to a printing wide-character code).
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe with exceptions |
+-----------------------------+-----------------------------+
SEE ALSO
setlocale(3C), wcswidth(3C), attributes(5), standards(5)
SunOS 5.10 14 Aug 2002 wcwidth(3C)