VFWPRINTF
Section: POSIX Programmer's Manual (3P)
Updated: 2003
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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 equivalent 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 .