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Build MEX File

This example shows how to build the example MEX file, timestwo. Use this example to verify the build configuration for your system.

To build a code example, first copy the file to a writable folder on your path.

copyfile(fullfile(matlabroot,'extern','examples','refbook','timestwo.c'),'.','f')

Use the mex command to build the MEX file.

mex timestwo.c
Building with 'Microsoft Visual C++ 2010 (C)'.
MEX completed successfully.

This command creates the file timestwo.ext, where ext is the value returned by the mexext function.

The timestwo function takes a scalar input and doubles it. Call timestwo like a MATLAB® function.

timestwo(4)
ans =
     8

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