Possible Vectorization using If Statements in MATLAB

Suppose I have the following column vectors as

res =   0.81              res2 = -0.28
        0.78                     -0.41
        0.85                     -0.62
        0.50                     -0.56
        0.63                     -0.11

and I have two fixed constant D = 0.5. Now suppose an element of res1 is called X and an element of res2 is called Y. I have the following conditions

if (X > D && Y < -D)
     output = 1
elseif (X < -D && Y > D)
     output = -1
else
     output = 0
end

My question is this:

Is it possible to "vectorize" these conditions to iterate over the entire vectors res1 and res2, such that my output vector would give (for example) :

 output = -1
           0
          -1
           0
           1

?

I know I can do it via a loop, but I would prefer to avoid it since these vectors are actually quite large (>10000). I have attempted to use logical indexing, but to no avail (unless I'm implementing it wrong).

Any help would be appreciated!