Function vfprintf

extern/SfIO/include/stdio.h:189–190

__INLINE__ int puts_unlocked(const char* s)		{ return _std_puts(s);		}
__INLINE__ int vprintf(const char* fmt, va_list a)	{ return _std_vprintf(fmt,a);	}
__INLINE__ int vfprintf(Sfio_t* f, const char* fmt, va_list a)
							{ return _std_vfprintf(f,fmt,a);}
__INLINE__ int _doprnt(const char* fmt, va_list a, FILE* f)
							{ return _std_doprnt(fmt,a,f);	}
__INLINE__ int vsprintf(char* s, const char* fmt, va_list a)