MATLAB: Simulink If function to change the out put based on input

simulink

Hello all

I am looking for a simulink function that shall output 1 if the input is positie and output -1 if the input is negative. I believe this i is simple but I have no clue how to do this. Can someone please help me with this?

Best Answer

Use sign

function output = myfunc(input)
output=sign(input);
end

BTW what happens if input is zero? you have not mentioned that. Modify the function accordingly!!

Edit1: Just noticed you have mentioned "simulink function". You can use the sign/signum block. See here.

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