NOR in BASIC

[Jeff-20]

Can someone help me out with a simple BASIC formula for logical NOR? I tried OR then AND255. What would you use?

If you're up for the challenge, what about NAND? XNOR?

[groepaz]

what about NOT (A OR B)

[Mike]

what groepaz wrote, plus:

NAND(A,B) -> NOT(A AND B)
XNOR(A,B) -> A=B ("=" as relational operator, as in IF A=B THEN ...) provided A and B are -1 for true and 0 for false.

NOT(A AND B) also works for bitwise operations (where A and B are not necessarily 0 or -1). XNOR(A,B) would need to be expressed as (A AND B) OR (NOT A AND NOT B) in that case.

[TRIANGULAR OS]

If you want have this in 0 or 1 form use ABS() function in BASIC. So for example XNOR(A,B) would be ABS(A=B), if you want 0,1 answer.

[Jeff-20]

Great info! Thank you!