Is interpolation faster in Simulink or Matlab?

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I have a Simulink program that is compiled. The Simulink program contains a Matlab function where the physics are modelled. For each timestep an interpolation will take place, a length is interpolated to an angle. I have the opportunity to choose whether to implement the interpolation in Simulink or within the Matlab function. What is the best?
I know 'interp1' is slow and that there are faster functions like 'interp1q' or 'interp1qr' in Matlab but that have greater demands for the input.
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Marcus Jansson
Marcus Jansson 2017-6-19
Linear. I can use interp1q, but I wonder if Simulink is even faster with its interpolation features?

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Jan
Jan 2017-6-20
You can use the compiled Mex version FEX: ScaleTime.

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