Global variables in Matlab C-Coder

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Heinz Roitner
Heinz Roitner on 29 Nov 2017
Answered: Heinz Roitner on 29 Nov 2018
Hi there,
I am using Matlab-C-Coder App to translate a Matlab function to C. In the calling script as well as in the called function I declare the same global variables. These variables are also defined by initial value under 'Define Input Types: Add globals' in the Coder App. I display the values of global variables at the end of the calling script.
I do 'check for issues'; then in the 'test output' area it shows the global variables are all empty! On the other hand, if I initialize them at the beginning of the calling script, output shows still the initial values, but no changes which the called functions may have done to them.
It seems that the exchange of global variables between calling script and called function is somehow a problem for C-coder.
I appreciate your help on this! Best regards, Heinz
  2 Comments
Xiaoying ZHI
Xiaoying ZHI on 15 Nov 2018
Hi there. Have you solved this problem? I seem like have encountered a similar problem.
Ryan Livingston
Ryan Livingston on 16 Nov 2018
What release of MATLAB are you using?

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Accepted Answer

Heinz Roitner
Heinz Roitner on 29 Nov 2018
My problem was caused by the fact that the code was written with R2017b, but was tested on a machine with R2017a. After R2017b was installed there, problem was gone.
--Heinz

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