Double factorial [wp34s]

[Dieter]

(02-12-2016 02:21 PM)Gerson W. Barbosa Wrote:  The following preverves the Y register, but I need two more steps:

Simply replace the initial ENTER ENTER || with #1/2 RCLx Y and it's one step less again. ;-)

(02-12-2016 02:21 PM)Gerson W. Barbosa Wrote:  Ideally, both Y and Z stack registers should be saved. Thus I would not need the alternative definition in program 01.

Hmmm... this sounds quite challenging. Which does not mean it couldn't be done. ;-)

Dieter