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From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: RFC:  Generic Fixed-Point IIR Filter
Date: Thu, 26 Mar 2015 13:37:18 -0700
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Date: 2015-03-26T13:37:18-07:00
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On 03/26/2015 12:44 PM, Patrick Noffke wrote:
> 
> How is universal_fixed (likely) implemented on a 32-bit processor?  What
> happens if you multiply two fixed-point types that use all 32-bits for range
> and precision?  What if one type uses all the bits for the range and another
> uses all the bits for precision?

I refer you to ARM 3.4.1(7):

"The set of values of a universal type is the undiscriminated union of the set
of values possible for any definable type in the associated class." So
universal_fixed has to be able to handle any value of any fixed-point type
definition.

-- 
Jeff Carter
"Since I strongly believe that overpopulation is by
far the greatest problem in the world, this [Soylent
Green] would be my only message movie."
Charleton Heston
123