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 charac-
       ters. 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  cur-
       rent locale.

GNU                               1999-07-25                       wcswidth(3)