HP41C - workaround for the SIZE? missing

[Werner]

If speed is what you're after, then this is probably better:
(number entry is slow on a 41 compared to other instructions)

(38 bytes without END, 29 without LBL and END)

Code:

>LBL"SIZE?"
 255
 ABS
 50
 LASTX
 ISG X
>LBL 01
 SF 25
 ARCL IND Z
 %
 FC?C 25
 CHS
 ST+ Z
 ABS
 INT
 X>0?
 GTO 01
 LASTX
 RUP
 +
 CLA
 END

Cheers, Werner