octave: Mex-Files

 
 A.2 Mex-Files
 =============
 
 Octave includes an interface to allow legacy mex-files to be compiled
 and used with Octave.  This interface can also be used to share compiled
 code between Octave and MATLAB users.  However, as mex-files expose
 MATLAB’s internal API, and the internal structure of Octave is
 different, a mex-file can never have the same performance in Octave as
 the equivalent oct-file.  In particular, to support the manner in which
 variables are passed to mex functions there are a significant number of
 additional copies of memory blocks when invoking or returning from a
 mex-file function.  For this reason, it is recommended that any new code
 be written with the oct-file interface previously discussed.
 

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