MATLAB Compiler

Invoking the MEX-File

Invoke the MEX-file version of gasket from the MATLAB interpreter the same way you invoke the M-file version.

tic; x = gasket(50000); toc

MATLAB runs the MEX-file version (gasket.mex) rather than the M-file version (gasket.m). Given an M-file and a MEX-file with the same root name (gasket) in the same directory, the MEX-file takes precedence.

This produces

elapsed_time =
    5.2880

The MEX-file runs about 33% faster than the M-file version.

Note    These are optimized times.

To display the Sierpinski Gasket, use

imagesc(x); colormap([1 1 1;0 0 0]);
axis equal tight

This figure shows the results.

Figure 3-1: The Sierpinski Gasket for 50,000 Points

Compiling the M-File into a MEX-File

Compiler Options and Macros