#include <stdio.h>int fseeko(FILE *stream, off_t offset, int whence);off_t ftello(FILE *stream);.fi
DESCRIPTION
The
fseeko()
and
ftello()
functions are identical to
fseek(3)
and
ftell(3)
(see
fseek(3)),
respectively, except that the offset argument of
fseeko()
and the return value of
ftello()
is of type off_t
instead of long.
On many architectures both off_t and long are 32-bit types,
but compilation with
#define _FILE_OFFSET_BITS 64
will turn off_t into a 64-bit type.
RETURN VALUE
On successful completion,
fseeko()
returns 0, while
ftello()
returns the current offset.
Otherwise, -1 is returned and
errno
is set to indicate the error.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
