redhat man page for wcswidth

WCSWIDTH(3)						     Linux Programmer's Manual						       WCSWIDTH(3)

NAME
       wcswidth - determine columns needed for a fixed-size wide character string

SYNOPSIS
       #include <wchar.h>

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

DESCRIPTION
       The wcswidth function returns the number of columns needed to represent the wide-character string pointed to by s, but at most n wide char-
       acters. If a non-printable wide character occurs among these characters, -1 is returned.

RETURN VALUE
       The wcswidth function returns the number of column positions for the wide-character string s, truncated to at most length n.

CONFORMING TO
       UNIX98

SEE ALSO
       wcwidth(3), iswprint(3)

NOTES
       The behaviour of wcswidth depends on the LC_CTYPE category of the current locale.

GNU
								    1999-07-25							       WCSWIDTH(3)