write matlab code in c to decrease run time

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arun 2013-12-2

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关闭： MATLAB Answer Bot 2021-8-20

I have a file of code in MATLAB and but the code run slow for large input data. I have a question that if i will write that MATLAB code in C LANGUAGE and after that i will call that code as a function in MATLAB then will the code run fast and will it work properly*.

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Answer 1

Sean de Wolski 2013-12-2

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It depends, your mileage will vary.

A few things to consider:

Have your profiled your code to make sure it's running optimally in MATLAB ( |>> doc profile | )?
Have you listened to Code Analyzer messages regarding performance?
What is your code doing? For some things e.g. fixed point or signal processing the C will likely be faster. For linear algebra, ffts, etc., I doubt you'll out-perform the libraries MATLAB uses.