Simulink block for determining output value based on a simple if statement regarding the input value?

Hello,

Is there a Simulink block where I can determine the output value of a block based on a simple if statement regarding the input value to the block?

For example, I'm looking for a block that can do something similar to the following snippet of code

%u1 is the input to the block and u2 is the output
if u1 > threshold
     u2 = 1
elseif u1 < -threshold
     u2 = -1
else
      u2 = 0;
end

I'm aware that I could do this by placing a MATLAB function in my Simulink block diagram, but I'm thinking for something this simple, there's probably some built-in Simulink block for doing this. The Simulink "if" block (<http://www.mathworks.com/help/simulink/slref/if.html>) does not seem to what I'm looking for. Is there some other block that can do what I want?

Thank you,

Kevin