I->R and R->I without (rounding) errors

[Claudio L.]

(08-05-2021 06:42 AM)BINUBALL Wrote:  

(08-05-2021 04:47 AM)cahlucas Wrote:  Dear Claudio,
What is newRPL, and where can I get it?

I recommend you to read this thread. newRPL is, shortly, new version of RPL. (But user-made)
I know Claudio can explain this well than me.

Yes, the first post in that thread has all the links you need to know what it is, and to download and install it.
newRPL is a replacement OS for several calculator models. It gives you an RPL environment similar to a 50g (if you are familiar with the 48 series or the 50g you'll feel right at home)
Basically, it's roughly at the stage of a 48G (there's a symbolic rules engine, but not a complete CAS). There's no graphics or graphical user interface yet, but the programming part is complete, and most numeric stuff is done. If you find a command you need and it's missing let me know and we can put it in the high priority list to be implemented right away.

So it's basically the same stack and programming language you are used to, but:
* Numbers can use variable precision up to 2000 digits.
* Many of the quirks (like the integers vs. reals you found) aren't there by design.
* There's a bunch of new things that offer "quality of life" improvements over the 50g:
- A desktop version for you to use your favorite IDE for coding and simply copy/paste to test your programs, making coding quicker.
- Full support of UTF8 Unicode strings, so you can copy/pas1te from your favorite text editors
- Full support of USB comms. You can send/receive anything between the desktop and any calculator with newRPL. You can also control the remote device by sending programs to it
- Support for long file names on SD cards, and support for larger SDHC cards on the 50g.

It depends on what you are coding, it may suit your needs. If you are writing a program that needs a UI, then newRPL is not for you (yet). If you just want to write numeric routines that give you results, then it's definitely for you.