Hello.
Le mar. 18 juil. 2023 à 02:48, Dimitrios Efthymiou
<efthymiou.dimitri...@gmail.com> a écrit :
>
> Thanks Gilles. I checked NUMBERS-193 and i have an implementation of DD and
> i will put it in *.ext package (TBD) along with some tests. Do i have to
> look at Dfd.java or something, because these dfd classes in math legacy
> core have lots of hard-coded decimals in there.
Yes, we need to sort out what to with with the "Dfp" classes: I don't
know how useful they will be once the DD implementation is available.
We'll perhaps need benchmarks to assess speed vs precision among
all extended precision implementations:
* DD in [Numbers],
* Dfp in [Math]
* BigDecimal in the JDK
If "Dfp" is somehow (TBD) useful, it should be moved to a module of
its own, perhaps in [Numbers].
> Do these need to be copied
> to DD or just implement the high/low part, add, multiply and checks for
> overflows?
You might want to have a look at
https://issues.apache.org/jira/browse/MATH-1591
Regards,
Gilles
> > > [...]
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