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From: Victor Porton <porton@narod.ru>
Newsgroups: comp.lang.ada
Subject: Re: 'Size hack for enumerated types
Date: Sun, 06 Jul 2014 19:16 +0300
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Date: 2014-07-06T19:16:00+03:00
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sbelmont700@gmail.com wrote:

> On Saturday, July 5, 2014 4:32:10 PM UTC-4, Victor Porton wrote:
>> 
>> What is a better way to do this?
>>
> 
> I prefer something along these lines:
> 
> type T is (x, y, z);
> 
> K : constant array (T) of Interfaces.C.int :=
>   (x => 1,
>    y => 2,
>    z => 3);
> 
> C_Function(arg => K(x));
> 
> 
> You lose a little by having to declare the array (assuming it cannot be
> optimized away), but can have any size you desire for T, plus you get to
> explicitly specify how the enum maps.

Your way does not work backward (K^{-1}).

-- 
Victor Porton - http://portonvictor.org