Decimal Arithmetic

[Don]

Paul D. Anderson wrote:
> I've got a D programming language implementation of the General Decimal Arithmetic specification (http://speleotrove.com/decimal/) that's' more or less complete* and am wondering if it would be useful. I worked on this over a year ago but life got in the way, so I neglected it for a time. I now have the time to finish it.
> 
> It uses std.bigint as the basis for the decimal numbers. I know there are plans to bring BigFloat, decimal32, decimal64, and decimal128 numbers into D. The completed* portion of the code fills the role of BigFloat (although I called it Decimal), and I've got routines that encode/decode the dec32, etc. numbers but they're not as far along as the arbitrary precision version.
> 
> I guess my question is whether I'm repeating work that's been done or is being done in this area? If so, maybe I can lend a hand. If not, I'd like some feedback on what is needed so I can work on the important things first.
> 
> Let me know what you think. At this point I'd settle for a go/nogo decision. We can work bikeshed stuff later.

Go! We definitely want to get this into Phobos.

> 
> Thanks,
> 
> Paul
> 
> *"more or less complete" == It passes all the tests built in to the spec. No logical operators or exp/ln/power. Still needs work. I suppose it could be called an alpha version.