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From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: Representation clauses and side-efects on STM32F411 ravenscar
 runtime
Date: Sun, 2 Aug 2015 13:31:15 -0700
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Date: 2015-08-02T13:31:15-07:00
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On 08/02/2015 12:54 PM, Bob Duff wrote:
> "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> writes:
> 
>> On 08/02/2015 01:59 AM, Frédéric Praca wrote:
>>>
>>>    type Mantissa is range 0 .. 2**12 - 1 with Size => 12;
>>>    type Fraction is range 0 .. 2**4 - 1 with Size => 4;
> 
>> Wouldn't modular types be better for these?
> 
> Why would you want wraparound arithmetic for these?  Seems like it would
> just hide bugs.

I wouldn't think you'd do any arithmetic with these. A modular type makes it
clear you have an unsigned representation.

-- 
Jeff Carter
"Hold your temper. Count ten.... Now let 'er go.
You got a good aim."
Never Give a Sucker an Even Break
105