fxlibc/include/stdio.h

#ifndef __STDIO_H__
# define __STDIO_H__

#include <stddef.h>
#include <stdarg.h>
#include <bits/types/FILE.h>

/* Standard input, output and error streams. */
extern FILE *stdin;
extern FILE *stdout;
extern FILE *stderr;
/* Make them macros (7.19.1§3) */
#define stdin stdin
#define stdout stdout
#define stderr stderr

/*
** Formatted input/output functions.
**
** These functions implement most of printf(3)'s features, including:
** - Signed and unsigned integer formats (%d, %i, %o, %u, %x, %X)
** - Character, string and pointer formats (%c, %s, %p)
** - Character count and strerror() shorthand formats (%n, %m)
** - Format options (0, #, -, (space), length, precision)
** - Parameter length (hh, h, l, ll, z)
** - Limiting the size of the output and still returning the whole length
** - If __printf_enable_fp() from <fxlibc/printf.h> is called: floating-point
**   formats (%e, %E, %f, %F, %g, %G) (disabled by default to save space)
**
** They do not support:
** - Hexadecimal floating-point (%a, %A)
** - Some size modifiers: long double (L), intmax_t (j), ptrdiff_t (t), and the
**   nonstandard synonyms q (ll) and Z (z)
** - Dynamic length field (*)
** - Thousands separators (') and locale-aware digits (I)
** - Nonstandard synonyms %C (%lc) and %S (%ls)
**
** There are extensions, namely to allow for custom conversions to be added.
** One custom conversion can be enabled with __printf_enable_fixed() from
** <fxlibc/printf.h>: a decimal fixed-point format %k which is like %d but
** with a decimal point. See <fxlibc/printf.h> for details.
*/

/* Formatted print to file. */
extern int fprintf(FILE * restrict __fp, char const * restrict __format, ...);

/* Formatted print to stdout. */
extern int printf(char const * restrict __format, ...);

/* Formatted print to string (with limited size). */
extern int snprintf(char * restrict __str, size_t __size,
	char const * restrict __format, ...);

/* Formatted print to string (with unlimited size!). */
extern int sprintf(char * restrict __str, char const * restrict __format, ...);

/* Formatted print to file (variable argument list). */
extern int vfprintf(FILE * restrict __fp, char const * restrict __format,
	va_list __args);

/* Formatted print to stdout (variable argument list). */
extern int vprintf(char const * restrict __format, va_list __args);

/* Formatted print to string (limited size, variable argument list). */
extern int vsnprintf(char * restrict __str, size_t __size,
	char const * restrict __format, va_list __args);

/* Formatted print to string (unlimited size!, variable argument list). */
extern int vsprintf(char * restrict __str, char const * restrict __format,
	va_list __args);

/* putx() - display char / string */
extern int putchar(int c);
extern int puts(const char *s);

/* Extensions. */

/* Formatted print to file descriptor. */
extern int dprintf(int __fd, char const * restrict __format, ...);

/* Formatted print to file descriptor (variable argument list). */
extern int vdprintf(int __fd, char const * restrict __format, va_list __args);

/* Allocating sprintf(). */
extern int asprintf(char ** restrict __str,char const * restrict __format,...);

/* Allocating vsprintf(). */
extern int vasprintf(char ** restrict __str, char const * restrict __format,
	va_list __args);

#endif /*__STDIO_H__*/