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From: "Matthew Heaney" <matthew_heaney@acm.org>
Subject: Re: An alternative to Unchecked Conversion
Date: 1999/12/17
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In article <slrn85keec.46.lutz@taranis.iks-jena.de> , lutz@iks-jena.de 
(Lutz Donnerhacke) wrote:

> Nope. The former one contains a restriction to 8 bit which can be
> considerably slower that using the native character size of the processor.

Let's try again.


This declaration:

declare
  type Byte is mod 2 ** Character'Size;
  for Byte'Size use Character'Size;

  function To_Byte is new Unchecked_Conversion (Character, Byte);

  B : constant Byte := To_Byte ('A');
begin


should have the same efficiency as this declaration

declare
  C : constant Character := 'A';
begin