What is the difference between "<>", "!=" and "~=" in a Stateflow chart?

I have a Stateflow chart where the symbol "<>" is used. I tried to replace this symbol with "!=" but it seems to give identical results. What is the risk of change in behavior of the model or of the generated code if all "<>" are placed with "!=" ?

Answer 1

[MathWorks Support Team]

The "<>" symbol is indeed equivalent to "!=". Nevertheless, it would be more robust to replace both of these expressions with "~=".

This is because, both "<>" and "!=" are binary operations which are only supported when using C as the action language of the chart:

https://www.mathworks.com/help/stateflow/ug/operations-for-stateflow-data.html

On the other hand, "~=" is supported both when using MATLAB or C as the action language.

For more information about using MATLAB or C as an action language see:

https://www.mathworks.com/help/stateflow/ug/differences-between-matlab-and-stateflow-action-language.html