Manual Pages  — WCSWIDTH

wcswidth – number of column positions in wide-character string

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES SEE ALSO STANDARDS

Standard C Library (libc, -lc)

#include <wchar.h>

int
wcswidth(const wchar_t *pwcs, size_t n);

The wcswidth() function determines the number of column positions required for the first n characters of pwcs, or until a null wide character (L'\0') is encountered.

The wcswidth() function returns 0 if pwcs is an empty string (L""), -1 if a non-printing wide character is encountered, otherwise it returns the number of column positions occupied.

The wcswidth() function conforms to IEEE Std 1003.1-2001 ("POSIX.1").