Does Matlab coder self checking Matlab output vs. C code output when generating code?

Question

Yufei Zhang 2021-4-21

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https://ww2.mathworks.cn/matlabcentral/answers/808310-does-matlab-coder-self-checking-matlab-output-vs-c-code-output-when-generating-code

回答： Darshan Ramakant Bhat 2021-4-21

When using Matlab coder for C code generation, sometimes we might not get 100% line execution from the entry point test code. i.e. ( picture taken from https://www.mathworks.com/help/coder/ug/collect-and-view-line-execution-counts-for-your-matlab-code.html )

There is one question regarding to generated code with Matlab Coder, if the line execution count does not hit 100%, is it a must to modify test code to achieve 100% execution?

And during generation is it the coder doing self checking Matlab output vs. the C code output automatically? Or is it just replacing the function call with C code and see if output matches?

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Answer 1

Darshan Ramakant Bhat 2021-4-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/808310-does-matlab-coder-self-checking-matlab-output-vs-c-code-output-when-generating-code#answer_680410

Line execution count just gives you the code coverage data from the test. It is not necessary to achieve 100% execution in order for you to get a C/C++ code.

Coder will not automatically check if the outputs are equal in MATLAB and C, but you can do it using below approach :

https://www.mathworks.com/help/coder/ug/why-test-mex-functions-in-matlab.html

https://www.mathworks.com/help/coder/ug/how-to-verify-a-mex-function-at-the-command-line.html

https://www.mathworks.com/help/coder/ug/how-to-test-mex-functions.html

Hope this will help you.