HP-UX Reference (11i v3 07/02) - 3 Library Functions N-Z (vol 7)

v
vwprintf(3C) vwprintf(3C)
NAME
vfwprintf(), vwprintf(), vswprintf() - wide-character formatted output of a stdarg argument list
SYNOPSIS
#include <stdarg.h>
#include <wchar.h>
int vwprintf(const wchar_t *__restrict format, va_list arg);
int vfwprintf(FILE *__restrict stream, const wchar_t *__restrict format,
va_list arg);
int vswprintf(wchar_t *__restrict s, size_t n,
const wchar_t *__restrict format, va_list arg);
DESCRIPTION
The vwprintf() , vfwprintf() and vswprintf() functions are the same as
wprintf(),
fwprintf() and swprintf() 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 do not invoke the
va_end macro. However, as these functions do invoke the va_arg
macro, the value of ap after the return is indeterminate.
APPLICATION USAGE
Applications using these functions should call va_end(ap) afterwards to clean up.
The prototypes of these functions are available to applications if they are:
a. c99 conformant.
b. Compiled with -D_XOPEN_SOURCE
macro with a value >=500.
c. Compiled with
-D_POSIX_C_SOURCE
macro with a value >= 200112.
RETURN VALUE
Refer to
fwprintf() .
ERRORS
Refer to fwprintf() .
AUTHOR
vwprintf() , vfwprintf() , and vswprintf() were developed by HP and Mitsubishi Electric Cor-
poration.
SEE ALSO
fwprintf(3C), stdarg(5), thread_safety(5), glossary(9).
HP-UX 11i Version 3: February 2007 1 Hewlett-Packard Company 639