WCWIDTH(3C)WCWIDTH(3C)NAMEwcwidth - 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 corre‐
sponding 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 ALSOsetlocale(3C), wcswidth(3C), attributes(5), standards(5)
Aug 14, 2002 WCWIDTH(3C)
