Manpage of FSEEKO

FSEEKO

Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
Index
 

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);.fiFeature Test Macro Requirements for glibc (see
feature_test_macros(7)):

fseeko(),
ftello():

_FILE_OFFSET_BITS == 64 || _POSIX_C_SOURCE >= 200112L
(defining the obsolete _LARGEFILE_SOURCE macro also works)
 

DESCRIPTION

The fseeko() and ftello() functions are identical to fseek(3) and ftell(3) (see fseek(3)), respectively, except that the offsetargument of fseeko() and the return value of ftello() is of type off_tinstead of long.

On some architectures, both off_tand longare 32-bit types, but defining _FILE_OFFSET_BITSwith the value 64 (before including anyheader files) will turn off_tinto a 64-bit type.  

RETURN VALUE

On successful completion, fseeko() returns 0, while ftello() returns the current offset. Otherwise, -1 is returned and errnois set to indicate the error.  

ERRORS

See the ERRORS in fseek(3).  

VERSIONS

These functions are available under glibc since version 2.1.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
fseeko(), ftello() Thread safetyMT-Safe

 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008, SUSv2.  

SEE ALSO

fseek(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
VERSIONS
ATTRIBUTES
CONFORMING TO
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 22:27:49 GMT, June 20, 2016