If statement with OR operator to create error message for a function

Hi

I have a function that has a second input that must be 8, 12 or 16. I want to have an error message to flag when the 2nd input does not take these values. I have tried doing this in an if statement:

if A~=8 || A~=12 || A~=16
error('..','...')
end

Of course, I think my logic here is wrong (if the input is 12, it is true for the A~=8 or 16) and so the if statement is always true and can never be false. Would an AND/OR work (if these exist in matlab)?

Is there a way I can do this in an if statement? Or is there a better way of writing what I'm trying to do?

Thanks for your help!

Answer 1

[Cedric]

 if A~=8 && A~=12 && A~=16
    error('..','...') ;
 end

you could also use ISMEMBER:

 if ~ismember(A, [8, 12, 16])
    error('..','...') ;
 end