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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
       characters. 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
       iswprint(3), wcwidth(3)


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