You can call your own C, C++, or Fortran subroutines from the MATLAB® command line as if they were built-in functions. These programs, called binary MEX-files, are dynamically-linked subroutines that the MATLAB interpreter loads and executes. MEX stands for "MATLAB executable."
They are not quite the same as DLL in that the calling form they use is specific to MATLAB instead of being for straight-forward use from other programs.
