opensolaris man page for vswprintf

vfwprintf(3C)						   Standard C Library Functions 					     vfwprintf(3C)

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 s, size_t n,
	    const wchar_t *restrict format, va_list arg);

       int vwprintf(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.

RETURN VALUES
       Refer to  fwprintf(3C).

ERRORS
       Refer to  fwprintf(3C).

USAGE
       Applications using these functions should call va_end(ap) afterwards to clean up.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe with exceptions	   |
       +-----------------------------+-----------------------------+

SEE ALSO
       fwprintf(3C), setlocale(3C), attributes(5), standards(5)

NOTES
       The  vwprintf(),  vfwprintf(),  and vswprintf() functions can be used safely in multithreaded applications, as long as setlocale(3C) is not
       being called to change the locale.

SunOS 5.11							    1 Nov 2003							     vfwprintf(3C)