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Re: [Discuss-gnuradio] fseek cont: reading file position beyond 32 bits

From: Daniel O'Connor
Subject: Re: [Discuss-gnuradio] fseek cont: reading file position beyond 32 bits
Date: Wed, 9 Feb 2005 11:00:04 +1030
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On Wed, 9 Feb 2005 09:15, Stephane Fillod wrote:
> > > Looks like you will have to use ftello() and define _LARGEFILE_SOURCE.
> >
> > What is the define for?
> This is to turn the usual 32 bit off_t type into a 64 bit type.
> Under GNU/Linux, see ftello(3) and /usr/include/features.h

Seems kind of strange to have ftell and ftello available if your off_t is the 
same size as an int.

> > On my system (FreeBSD) ftello() is all you need.
> Lucky you. 64bit system owners are also on the lucky side.

This is a 32 bit system :)

> Better yet, they may even mmap the whole file :*)

Heh that is probably slower on a modern x86 system than read/write (so I am 

Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
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