Optimized Stack Operations

[Thomas Klemm]

(02-26-2019 10:40 AM)deetee Wrote:  You are right: Every ROTup command can be substituted by a SWAP

Except for the last one. That needs to be a ROTup.

Quote:(which is slightly faster than a ROT),

That's why I asked.

Quote:but I don't see any saving of stack operation steps.

Not sure if understand that correctly, but I replaced CHS + by – and INV * by /.
Therefore 2 steps are saved.

(02-26-2019 10:52 AM)Paul Dale Wrote:  As for stack operations, it might be worth implementing a few extra ones natively.

I'd vote for OVER. That's useful and expensive to implement only with ENTER, SWAP, ROTup and ROTdown.

Cheers
Thomas