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NAME

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

SYNOPSIS

       #define _XOPEN_SOURCE             /* See feature_test_macros(7) */
       #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  nonprintable  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

       POSIX.1-2001.

NOTES

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

SEE ALSO

       iswprint(3), wcwidth(3)

COLOPHON

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