error: not enough input arguments

help , I'm new to MATLAB!! I am trying to run this code, however, i get error, that there is error in line 3: not enough input arguments :( function a = satur(u) if abs(u)> 0.001 a= sign(u); else a= u*1000; end end

Answer 1

[Thorsten]

You have to call the function with an argument, like

satur(23)

[zoubaida mejri]

i don't have main prg i'll use this code in simulink (intrepreted matlab fct)