From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: *
X-Spam-Status: No, score=1.3 required=5.0 tests=BAYES_00,INVALID_MSGID,
	MSGID_RANDY autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,a2aeab5a4f8df549
X-Google-Attributes: gid103376,public
From: gdemont@my-deja.com
Subject: Re: Large arrays in GNAT
Date: 2000/07/16
Message-ID: <8kt0mb$a6b$1@nnrp1.deja.com>#1/1
X-Deja-AN: 647057863
References: <3971DC1F.D415BFBE@npolar.no>
X-Http-Proxy: 1.0 sitelnet.unine.ch:8080 (Squid/2.1.PATCH2),
 1.0 x62.deja.com:80 (Squid/1.1.22) for client 130.125.13.32, 130.125.90.100
Organization: Deja.com - Before you buy.
X-Article-Creation-Date: Sun Jul 16 18:59:29 2000 GMT
X-MyDeja-Info: XMYDJUIDgdemont
Newsgroups: comp.lang.ada
X-Http-User-Agent: Mozilla/4.72 (Macintosh; I; PPC)
Date: 2000-07-16T00:00:00+00:00
List-Id: <comp.lang.ada>


> I cannot declare an array of Float larger than 2.5 mill elements
> using my Ada95 gnat compiler (gnat-3.12p-12) on my linux box.

> A : array (Integer range 1 .. 2_500_000) of Float;

A is taken on the stack, so if the "exe" has a limit on that,
you have to extend this limit. A more comfortable way is to
allocate A in the heap - according to the OS, the only limit
is +/- the total user workspace in virtual memory (4 GB on
a 32-bit system).

type vector is array (Integer range <>) of Float;
type vector_a is access vector;

A: vector_a:= New vector(1 .. 2_500_000);

HTH
______________________________________________________
Gautier  --  http://members.xoom.com/gdemont/gsoft.htm


Sent via Deja.com http://www.deja.com/
Before you buy.