Mention ArbNumerics (because of ArbFloat type)

[PallHaraldsson]

@JeffreySarnoff Should this package document/point to ArbFloats.jl ArbNumerics.jl as an alternative? It seems they are mutable, and this package not needed:

https://github.com/JuliaArbTypes/ArbFloats.jl/blob/9710fb9b65adff5a62336b6eff50b4d55f378f75/src/type/ArbCstructs.jl#L50

They are faster that BigFloat, and should be documented in JuliaLang's docs. I found your package there, suggesting to use, since faster than BigFloat, but I think people might overlook even faster option. In case I misunderstand and ArbFloats aren't mutable, then it's an even better reason to point to from here, since can be used together, not as alternatives?

[JeffreySarnoff]

ArbNumerics.jl is the maintained, newer realization of ArbFloats.jl. And yes, they should be linked. If by mutable you mean the value of a variable may be re-assigned, e.g. updated, they are mutable.

[PallHaraldsson]

Yes, I meant that one... I'm recalling the ArbFloat type which is there too (I assume moved), so I tend to mix up looking up the older one.

[odow]

Sorry for missing this. Where would you expect MutableArithmetics to mention ArbNumerics? It seems they have slightly different goals.

[odow]

Closing because I don't know what MutableArithmetics.jl needs to document about ArbNumerics.jl. (The fact that it is a mutable struct is unrelated).

One concrete work item might be for ArbNumerics.jl to implement the MutableArithmetics API (perhaps as a package extension), but I don't think we want/need to add it to MutableArithmetics.jl. This package is already too complicated.

[blegat]

It is being worked on in kalmarek/Arblib.jl#178. We should reference it in the README once this PR is merged