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vswprintf(3c) [opensolaris man page]

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)

Check Out this Related Man Page

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 correspond- ing 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 Technol- ogy -- 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)
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