fwprintf_s.c File Reference

#include "safe_str_lib.h"

Include dependency graph for fwprintf_s.c:

Functions
EXPORT int	fwprintf_s (FILE *restrict stream, const wchar_t *restrict fmt,...)
	The fwprintf_s function prints formatted output to a wide stream. More...

Function Documentation

fwprintf_s()

EXPORT int fwprintf_s	(	FILE *restrict	stream,
		const wchar_t *restrict	fmt,
			...
	)

The fwprintf_s function prints formatted output to a wide stream.

Note

POSIX specifies that errno is set on error. However, the safeclib extended ES* errors do not set errno, only when the underlying system vfwprintf call fails, errno is set.

Remarks

SPECIFIED IN

• C11 standard (ISO/IEC 9899:2011): K.3.9.1.6 The fwprintf_s function (p: 632) http://en.cppreference.com/w/c/io/vfwprintf

Parameters

[in]	stream	output wide stream to write to
[in]	fmt	format-control wide string.
[in]	...	optional arguments

Precondition

fmt shall not be a null pointer.

fmt shall not contain the conversion specifier n

None of the arguments corresponding to s is a null pointer (not yet)

No encoding error shall occur.

Returns

On success the total number of wide characters written is returned.

On failure a negative number is returned, and possibly errno set to EINVAL or EOVERFLOW.

Return values

-ESNULLP	when fmt is NULL pointer
-EINVAL	when fmt contains n
-1	some other error. errno: EINVAL or EOVERFLOW

See also

vwfprintf_s(), wprintf_s()