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.\" gd_frameoffset64.3. The gd_frameoffset64 man page.
.\"
.\" Copyright (C) 2008, 2010, 2016 D.V. Wiebe
.\"
.\""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
.\"
.\" This file is part of the GetData project.
.\"
.\" Permission is granted to copy, distribute and/or modify this document
.\" under the terms of the GNU Free Documentation License, Version 1.2 or
.\" any later version published by the Free Software Foundation; with no
.\" Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
.\" Texts. A copy of the license is included in the `COPYING.DOC' file
.\" as part of this distribution.
.\"
.TH gd_frameoffset64 3 "25 December 2016" "Version 0.10.0" "GETDATA"
.SH NAME
gd_frameoffset64, gd_alter_frameoffset64 \(em report or change the frame
offset of fields in a dirfile, with largefile support
.SH SYNOPSIS
.SC
.B #define GD_64BIT_API
.br
.B #include <getdata.h>
.HP
.BI "gd_off64_t gd_frameoffset(DIRFILE *" dirfile ", int " fragment_index );
.HP
.BI "int gd_alter_frameoffset64(DIRFILE *" dirfile ", gd_off64_t " offset ,
.BI "int " fragment_index ", int " move );
.EC
.SH DESCRIPTION
These versions of
.F3 gd_frameoffset
and
.F3 gd_alter_frameoffset
use a 64-bit offset type
.RB ( gd_off64_t ),
where one is available, regardless of the size of
.BR off_t .
They are only available if
.BR GD_64BIT_API
has been defined before including getdata.h.
If
.B off_t
is a 64-bit type, these functions will the same as
.F3 gd_framenum_subset
and
.F3 gd_alter_frameoffset .
Otherwise,
.F3 gd_framenum_subset
and
.F3 gd_alter_frameoffset
will be versions of these function which use a 32-bit
.BR off_t .
.SH SEE ALSO
.F3 gd_alter_frameoffset ,
.F3 gd_frameoffset ,
.BR feature_test_macros (7)
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