Simulink If function to change the out put based on input

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Ganeswara Rao Ganta
编辑： Raj 2019-7-1
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?

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Raj
Raj 2019-7-1
编辑：Raj 2019-7-1
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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