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Functions and Objects Supported for C/C++ Code Generation. You can generate efficient C/C++ code for a subset of MATLAB ® built-in functions and toolbox functions and System objects that you call from MATLAB code. These functions and System objects are listed in the following tables.
Directly call C library functionality from MATLAB ® using calllib or write C programs that call MATLAB functions using mxArray to access or create MATLAB variables in C
Directly call C library functions from MATLAB ® R2021b or earlier, using calllib function. A shared library is a collection of functions dynamically loaded by an application at run time. The MATLAB interface supports libraries containing functions defined in C header files.
This example shows how to create a MATLAB ® interface to a C++ library for Windows ® by calling clibPublishInterfaceWorkflow. For this example, the library is defined by header file matrixOperations.hpp and import library file matrixOperations.lib. MATLAB provides the library files in this folder:
Usually, you can pass a variable from the Equivalent MATLAB Type column to functions with the corresponding Argument Data Type. See Pointer Arguments in C Functions for information about when to use a lib.pointer object instead.
This example shows you how to create a custom block that calls an external C function. When the block is part of the model, you can take advantage of the simulation environment to test the system further.
Call MATLAB Functions from C Applications. The program engdemo.c in the matlabroot/extern/examples/eng_mat folder illustrates how to call the engine functions from a standalone C program. This example uses the C Matrix API.
