HP-41 and 42s: AIP with or without sign?

[Valentin Albillo]

(06-07-2018 04:43 AM)Ángel Martin Wrote:  Just to confirm that ARCLI and AINT do respect the sign. That was intentional; by definition it's the INTEGER number what is appended to ALPHA - not the NATURAL number...

AIP in the Advantage and SandMatrix do not include the sign. This makes more sense if all it's being used for is a matrix element index of course...

As you perfectly state, in AIP the "I" stands for "Integer" so not including the sign is kind of stupid and shortsighted, even supposing it was meant for indexes. But after seeing some of the extremely stupid things HP did with the HP71B mainframe and its Math ROM, this doesn't surprise me anymore.

Assuming it doesn't break anything I'd suggest you correct AIP in the SandMatrix to include the sign, as it should and as expected.

Regards.
V.
.