Re: [vhdl-200x] Proposal for improved physical types

On 27 January 2015 at 05:36, David Koontz <diogratia@gmail.com> wrote:

>
> Performance concerns aren't paramount.
>
> VHDL has purposefully discarded infinite precision arithmetic.
>

Yes, that's the reason Jan and other proponents have proposed that integer
types be constrained, but only at elaboration time, or as I put it, at a
higher-level hierarchy of the design. Think of it similar to deferring the
constraints to a later (or higher) phase of the design. At the block level,
integer types can be unconstrained, but will be constrained later at the
system level. So there is no concern of infinite precision arithmetic. At
elaboration time, precision will still be constrained and finite.

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