Is it possible to use mxCalloc and mxFree in S-Functions?

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MathWorks Support Team on 31 Jul 2009

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Edited: MathWorks Support Team on 8 Nov 2013

I created identical S-Functions with dynamic memory allocation. One uses calloc/free and it works fine. The other one uses mxCalloc/mxFree and it crashes every now and then when simulating.

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MathWorks Support Team on 4 Apr 2018

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Standard MATLAB API memory allocation routines mxCalloc and mxFree are designed to be used with MEX-files that are called from MATLAB, not from Simulink. In S-Functions, use the stdlib.h library routines calloc and free.