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WCSWIDTH(3)              BSD Library Functions Manual              WCSWIDTH(3)

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

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <wchar.h>

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

     #include <wchar.h>
     #include <xlocale.h>

     int
     wcswidth_l(const wchar_t *pwcs, size_t n, locale_t loc);

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.

     Although the wcswidth() function uses the current locale, the wcswidth_l() function may be passed a
     locale directly. See xlocale(3) for more information.

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), wcwidth(3), xlocale(3)

STANDARDS
     The wcswidth() function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

BSD                             August 20, 2002                            BSD