stdio.h File Reference

Standard i/o library. More...

#include <core.h>
#include <stdarg.h>

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Functions
int	snprintf (char *buf, size_t n, const char *format,...)
	Compose a printf-formatted string into the target buffer. More...
int	vsnprintf (char *buf, size_t n, const char *format, va_list arg)
	Compose a printf-formatted string into the target buffer using a variable argument list. More...

Detailed Description

Standard i/o library.

Definition in file stdio.h.

Function Documentation

int snprintf	(	char *	buf,
		size_t	n,
		const char *	format,
			...
	)

Compose a printf-formatted string into the target buffer.

If the length of the string is greater than n-1 characters, truncate the remaining characters but return the total number of characters processed.

Parameters

[in]	buf	Pointer to a buffer where the resulting string is to be stored.
[in]	n	Maximum number of characters in the the buffer, including space for a null terminator.
[in]	format	A format-specifier string.
[in]	...	A variable argument list based on the contents of the format string.

Returns

The number of characters that would have been written if n was sufficiently large.

Referenced by dump_cpuflags(), and dump_registers().

int vsnprintf	(	char *	buf,
		size_t	n,
		const char *	format,
		va_list	arg
	)

Compose a printf-formatted string into the target buffer using a variable argument list.

If the length of the string is greater than n-1 characters, truncate the remaining characters but return the total number of characters processed.

Parameters

[in]	buf	Pointer to a buffer where the resulting string is to be stored.
[in]	n	Maximum number of characters in the the buffer, including space for a null terminator.
[in]	format	A format-specifier string.
[in]	arg	Variable arguments list to be initialized with va_start.

Returns

The number of characters that would have been written if n was sufficiently large.

Referenced by logvf(), and tty_printf().