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From: Larry Hazel <lhhazel@otelco.net>
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Subject: Re: New limited range type?
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Date: Fri, 07 Nov 2003 17:31:05 -0600
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Date: 2003-11-07T17:31:05-06:00
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Martin Dowie wrote:

> "Larry Hazel" <lhhazel@otelco.net> wrote in message
> news:l%Sqb.1767$X5.22782@eagle.america.net...
> 
>>>You could argue that the case "A := B + C - D," for these 'limited
>>>range' types _can_only_ be equivilent to "A := (B + C) - D;".
>>>
>>
>>An analog computer implements saturating arithmetic.  Oh my God, how
>>long has it been since anyone saw an analog computer.  The sum B + C - D
>>would be computed all at once and would only saturate if the final
>>result was out of range.  So, I think the expression should be evaluated
>>in a base type with saturation applied to the result.
> 
> 
> or, how about lets not and support the 99.99999999999999999999999etc%
> digital world only! :-)
> 
> Is there an Ada (any variant) compiler for an analogue computer?..
> 
> 
I seriously doubt you will find any kind of compiler that will correctly 
wire an analog patchboard.  But I surely could have used one in the 60s 
and 70s.