This example shows how to generate a MEX function from a simple MATLAB® function using the
codegen command. You can use
codegen to check that your MATLAB code is suitable for code generation and, in many cases, to accelerate your MATLAB algorithm. You can run the MEX function to check for run-time errors.
There are no prerequisites for this example.
hello_world.m function simply returns the string 'Hello World!'.
function y = hello_world %#codegen y = 'Hello World!';
%#codegen directive indicates that the MATLAB code is intended for code generation.
First, generate a MEX function using the command
codegen followed by the name of the MATLAB file to compile.
Code generation successful.
codegen generates a MEX function named
hello_world_mex in the current folder. This allows you to test the MATLAB code and MEX function and compare the results.
Run the MEX function to compare its behavior to that of the original MATLAB function and to check for run-time errors.
ans = 'Hello World!'