Books about CAS

[Jonathan Busby]

(01-12-2020 06:26 AM)Nad Wrote:  Hello,

Did you ever implement the algorithms in software?

I have *dozens* of half-to-mostly finished projects. Whether I'll ever release them to the public
depends on how my pathological perfectionism judges them for public consumption

Quote: I am wondering how large a CAS is in MB. Of course it would depend on the number
of features.

In my experience, the parser, the abstract-syntax-tree to intermediate representation code generator, and the term re-writing rules and system take up the most space and effort. Everything else is implemented with special purpose functions, which are optional. I'd say around 20KiB to 50KiB at a minimum in Saturn assembly and System-RPL.

Quote:I have the development board used by the creator of this open source calculator, which has 16MB flash.

Looks like a neat project

Quote:I'm looking at adding some "simple" CAS functions. A good place to start is arbitrary precision big integer storage and arithmetic. There's a lot on the web, e.g. this

If it's possible, you might want to use an ARM Cortex M4 embedded CPU for your calculator, as one can then use the embedded versions of the GNU Multi-Precision ( aka "Bignum" ) library, without having to start from scratch See the following link : https://singletonresearch.com/2017/07/11...cortex-m4/

Regards,

Jonathan