NAME¶
fseeko, ftello - seek to or report file position
SYNOPSIS¶
#include <stdio.h>
int fseeko(FILE *stream, off_t offset, int whence);
off_t ftello(FILE *stream);
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.
ERRORS¶
See the ERRORS in
fseek(3).
SUSv2, POSIX.1-2001.
NOTES¶
These functions are found on System V-like systems. They are not present in
libc4, libc5, glibc 2.0 but are available since glibc 2.1.
SEE ALSO¶
fseek(3)
COLOPHON¶
This page is part of release 3.44 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/.