What is .mex file ?

When ever i simulate a model containing state Chart in it, I generally observe mex files being generated in the current folder director.

What is the use of this .mex file ?

Answer 1

[Walter Roberson]

The .mex file is C code being generated from the Stateflow Chart; the C code is then compiled to binary code and run within MATLAB. This provides for efficient execution of the Chart.

[Ajay Pherwani]

Thanks for you answer , But Why is that only for stateflow chart we observe mex files ? , why isnt for normal simulink block we see mex file ?

[Walter Roberson]

I do not know enough about Simulink to answer that.

My understanding had been that there might be some compilation when you use Accelerator mode.

[Ajay Pherwani]

OK , thanks for the answers :)

[Sean de Wolski]

@Walter: or fortran!