github.com/afumu/libc@v0.0.6/musl/src/stdio/ext2.c (about)

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