Of course. It's just that Bignum would work today.
Thanks
Bruce
On 6/18/2013 5:49 PM, David Rowe wrote:
>> As far as I can tell, this is the only type that will return the same
>> answer reliably on all platforms.
> Fixed point can return the same answer on all platforms, e.g. 16 bit
> words, 16x16 multiplies with 32 bit results. Some DSPs can optionally
> keep more digits in their accumulators (e.g. for the result of a long
> multiply accumulate) but that can generally be disabled or made
> consistent across platforms in software.
>
> This makes porting to other platforms or real time very simple to test
> as everything is bit exact, so there is not need for special tests or
> human judgement. Of course the initial overhead (and maintenance) of
> the fixed point port is high.
>
> IIRC g729 was defined as a fixed point simulation.
>
> - David
>
>
>
>
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