(12C) Signum Function

[Gamo]

Unique HP-12C Platinum in ALG mode

I'm not sure if TI Calculator with AOS got the [LSTx] function.

For 12CP in order to use [LSTx] it need to execute direct arithmetic first like

[+] [-] [x] [÷] but with [x²] or [√x] can not recall [LSTx] so then

I use 1 [x] [X<>Y] first so that I can recall [LSTx] later in program.

Gamo