NOT AND INSTRUCTION ?

[ggauny@live.fr]

Hi all,

I wonder if NOT AND boolean instruction exist in the HP Prime. I think no, but how can we emule this instruction ?
I try since a moment but without success.

Maybe one can help me ?

Goog day.

[chromos]

I think Gérard meant 'NAND' command.

If logical values are stored in list L1 then something like this could work:

   

Edit: strikethrough text was reaction to previous advice of another user and that post is now deleted.

[StephenG1CMZ]

Thanks for that suggestion Chromos.
If it is NAND that is wanted I would suggest:

Code:


EXPORT NAND(LST)
BEGIN
 IF SIZE(LST)==1 THEN
  RETURN (LST(1)==0);
 END;
 RETURN NOT (ΠLIST(LST));
END;

That has the advantage of also working with a single input, which the built-in list function does not handle.

[ggauny@live.fr]

Yes it is NAND I was speaking.
Thank you for reply.