External fast fourier transform, How to implement an external fft into Dymola 
External fast fourier transform, How to implement an external fft into Dymola 
f.perrone 
Sep 23 2011, 02:19 PM
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#1

Newbie Group: Members Posts: 9 Joined: 14March 11 Member No.: 266,812 
Good Morning everybody,
since within my work on Dymola I need to use the fast fourier transform,I was looking on the web for an external library/function allowing me to get what I need. I found the sequent website, it looks pretty much what I need: http://www.fftw.org/ http://www.fftw.org/install/windows.html (the installation file link) In there you might find the downloadable file..So far so good,but now the issue rises: I have no experience on how to implement such a library into Dymola in order to recall the external function as a Dymola one. I've had a real quick read of the Fritzon textbook,but there you can just find an actually easy example about the implementation of the sum function from a C code to Dymola. In this case it does not seem to me to be as easy as the sum function. Hence,I'm wondering if anybody could give me such a clue in order to recall this external fft into Dymola. I really look forward to getting an answer whenever possible. Greetings from Italy, Francesco Perrone 
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