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VFWPRINTF(3P)              POSIX Programmer's Manual             VFWPRINTF(3P)

PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the  corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.
NAME
       vfwprintf, vswprintf, vwprintf - wide-character formatted output  of  a
       stdarg argument list
SYNOPSIS
       #include <stdarg.h>
       #include <stdio.h>
       #include <wchar.h>
       int vfwprintf(FILE *restrict stream, const wchar_t *restrict format,
              va_list arg);
       int vswprintf(wchar_t *restrict ws, size_t n,
              const wchar_t *restrict format, va_list arg);
       int vwprintf(const wchar_t *restrict format, va_list arg);

DESCRIPTION
       The vfwprintf(), vswprintf(), and vwprintf() functions shall be equiva-
       lent to fwprintf(), swprintf(), and wprintf() respectively, except that
       instead  of  being called with a variable number of arguments, they are
       called with an argument list as defined by <stdarg.h>.
       These functions shall not invoke the va_end macro.  However,  as  these
       functions  do invoke the va_arg macro, the value of ap after the return
       is unspecified.
RETURN VALUE
       Refer to fwprintf().
ERRORS
       Refer to fwprintf().
       The following sections are informative.
EXAMPLES
       None.
APPLICATION USAGE
       Applications using these functions should call va_end(ap) afterwards to
       clean up.
RATIONALE
       None.
FUTURE DIRECTIONS
       None.
SEE ALSO
       fwprintf(),   the  Base  Definitions  volume  of  IEEE Std 1003.1-2001,
       <stdarg.h>, <stdio.h>, <wchar.h>
COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
       event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group  Standard
       is  the  referee document. The original Standard can be obtained online
       at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                  2003                        VFWPRINTF(3P)