Decimal Arithmetic

[Paul D. Anderson]

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.

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.