When will you implement cent and ucent?

[max haughton]

On Thursday, 31 March 2022 at 22:30:48 UTC, kinke wrote:
> On Thursday, 31 March 2022 at 18:40:52 UTC, deadalnix wrote:
>> Honestly, I don't care if DMD forward the operation to 
>> something in druntime, that would at least allow me to have 
>> good codegen on LDC/GDC.
>
> With LDC's support for inline LLVM IR 
> (https://wiki.dlang.org/LDC_inline_IR), I think we can quite 
> easily have a much better `core.int128` solution for LDC at 
> least. Coupled with LLVM's compiler-rt builtins library, which 
> should provide performant library fallbacks for targets with 
> limited hardware support. So that a druntime `Cent` solution 
> should be on-par with clang's `__int128`.
>
> The existing generic software implementation is still useful 
> for CTFE.

It's still quite ugly compared to just implementing cent properly 
e.g. lack of VRP and implicit conversions make the library 
approach a bit meh.