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.

• Getting Started with Mex-Files
• Working with Matrices and Arrays in Mex-Files
• Character Strings in Mex-Files
• Cell Arrays with Mex-Files
• Structures with Mex-Files
• Sparse Matrices with Mex-Files
• Calling Other Functions in Mex-Files

© 1996–2020 John W. Eaton
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https://octave.org/doc/v6.3.0/Mex_002dFiles.html