From owner-freebsd-questions@FreeBSD.ORG  Sun Jul 23 15:30:58 2006
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 1C48516A4E6
	for <freebsd-questions@freebsd.org>;
	Sun, 23 Jul 2006 15:30:58 +0000 (UTC)
	(envelope-from root@pukruppa.de)
Received: from moutng.kundenserver.de (moutng.kundenserver.de
	[212.227.126.187])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 5662E43D6D
	for <freebsd-questions@freebsd.org>;
	Sun, 23 Jul 2006 15:30:52 +0000 (GMT)
	(envelope-from root@pukruppa.de)
Received: from [213.146.114.24] (helo=reverse-213-146-114-24.cust.kamp-dsl.de)
	by mrelayeu.kundenserver.de (node=mrelayeu6) with ESMTP (Nemesis),
	id 0ML29c-1G4fus2dpt-0005a3; Sun, 23 Jul 2006 17:30:51 +0200
Date: Mon, 24 Jul 2006 20:49:32 +0200 (CEST)
From: "P.U.Kruppa" <root@pukruppa.de>
X-X-Sender: root@www.pukruppa.net
To: freebsd-questions@freebsd.org
Message-ID: <20060724200535.G84312@www.pukruppa.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
X-Provags-ID: kundenserver.de abuse@kundenserver.de
	login:2446dbdf8275641f979193ced594c629
Subject: [OT] gcc: maximum length of an array?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 23 Jul 2006 15:30:58 -0000

Hi,

sorry for posting an [OT], but usually people on this list know 
everything :-)

Since I don't know too much about programming I am frequently 
fascinated by simple things like Eratosthenes' sieve.
As you might remember, one has to create a boolean array for 
that. The longer the array the more primes can be found.

With malloc() I can create an array of length 100000000 (10^8)
and the first 5761455 primes are calculated in a few seconds.
So of course I would like to test length 10^9 but here my program 
crashes.

So my questions:
 	- is there some way to create a longer array?
 	- or what are the alternatives?
 	- do you know some kind of fine manual about this?

Regards and thanks for all answers,

Uli.


*********************************************
* Peter Ulrich Kruppa - Wuppertal - Germany *
*********************************************