1VFWPRINTF(P)               POSIX Programmer's Manual              VFWPRINTF(P)
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NAME

6       vfwprintf,  vswprintf,  vwprintf - wide-character formatted output of a
7       stdarg argument list
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SYNOPSIS

10       #include <stdarg.h>
11       #include <stdio.h>
12       #include <wchar.h>
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14       int vfwprintf(FILE *restrict stream, const wchar_t *restrict format,
15              va_list arg);
16       int vswprintf(wchar_t *restrict ws, size_t n,
17              const wchar_t *restrict format, va_list arg);
18       int vwprintf(const wchar_t *restrict format, va_list arg);
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20

DESCRIPTION

22       The vfwprintf(), vswprintf(), and vwprintf() functions shall be equiva‐
23       lent to fwprintf(), swprintf(), and wprintf() respectively, except that
24       instead of being called with a variable number of arguments,  they  are
25       called with an argument list as defined by <stdarg.h>.
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27       These  functions  shall  not invoke the va_end macro. However, as these
28       functions do invoke the va_arg macro, the value of ap after the  return
29       is unspecified.
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RETURN VALUE

32       Refer to fwprintf() .
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ERRORS

35       Refer to fwprintf() .
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37       The following sections are informative.
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EXAMPLES

40       None.
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APPLICATION USAGE

43       Applications using these functions should call va_end(ap) afterwards to
44       clean up.
45

RATIONALE

47       None.
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FUTURE DIRECTIONS

50       None.
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SEE ALSO

53       fwprintf() ,  the  Base  Definitions  volume  of  IEEE Std 1003.1-2001,
54       <stdarg.h>, <stdio.h>, <wchar.h>
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57       Portions  of  this text are reprinted and reproduced in electronic form
58       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
59       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
60       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
61       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
62       event of any discrepancy between this version and the original IEEE and
63       The  Open Group Standard, the original IEEE and The Open Group Standard
64       is the referee document. The original Standard can be  obtained  online
65       at http://www.opengroup.org/unix/online.html .
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69IEEE/The Open Group                  2003                         VFWPRINTF(P)
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