1#include "stdio_impl.h"
 2#include <stdio_ext.h>
 3
 4size_t __freadahead(FILE *f)
 5{
 6	return f->rend ? f->rend - f->rpos : 0;
 7}
 8
 9const char *__freadptr(FILE *f, size_t *sizep)
10{
11	if (f->rpos == f->rend) return 0;
12	*sizep = f->rend - f->rpos;
13	return (const char *)f->rpos;
14}
15
16void __freadptrinc(FILE *f, size_t inc)
17{
18	f->rpos += inc;
19}
20
21void __fseterr(FILE *f)
22{
23	f->flags |= F_ERR;
24}