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From: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Newsgroups: comp.lang.ada
Subject: Re: Efficient Matrix?
Date: 26 Dec 2002 22:09:30 GMT
Organization: Modern Electronics
Message-ID: <slrnb0mvgq.j0i.adi@drcomp.erfurt.thur.de>
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Date: 2002-12-26T22:09:30+00:00
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Jonas Gasser <jonas.gasser@dataflow.ch> wrote:

> type MATRIX is array (POSITIVE range <>, POSITIVE range <>) of BOOLEAN;
> type POINTER_MATRIX is access all MATRIX;
> A : POINTER_MATRIX := new MATRIX(1..10000,1..5000);
 
> ideas to optimize this.

You might want to pack it. And you might even want to think about
your style. Here is an example:

procedure bla is

   type MATRIX is array (Positive range <>, Positive range <>) of Boolean;
   type POINTER_MATRIX is access all MATRIX;

   pragma Pack (MATRIX);

   A : POINTER_MATRIX := new MATRIX (1 .. 10000, 1 .. 5000);

begin
   null;
end bla;

I would also write the identifiers in lower-/mixedcase, now it awfully
looks like MODULA.

-- 
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