WCSWIDTH(3)

NAME
wcswidth - number of column positions in wide-character string

SYNOPSIS
#include <wchar.h>
int
wcswidth(const wchar_t *pwcs, size_t n);

DESCRIPTION
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.

RETURN VALUES
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.

SEE ALSO
iswprint(3), strlen(3), wcslen(3), wcwidth(3)

STANDARDS
The wcswidth() function conforms to p1003.1-2001.

HISTORY
The wcswidth() function was ported from NetBSD and first appeared in OpenBSD 3.8.