Is this MATLAB or Octave?

Crude but effective tests of whether code is executed in matlab or octave.

Description

UIMATLAB returns true if the function is called from matlab, and false otherwise.

UIOCTAVE returns true if the function is called from octave, and false otherwise.

Using these functions, one is able to execute different parts of the code depending on what engine is performing the operations. Compatibility issues between MATLAB and Octave can thus be avoided.
 
For example:

if uimatlab
   disp('This is MATLAB.')
elseif uioctave
   disp('This is Octave.')
else
   disp('I do not know what user environment this is.')
end

• MATLAB release: MATLAB 7.5 (R2007b)

[Rody Oldenhuis]

Exactly what I was looking for, a nice trick indeed!

But I wondered...why didn't you put this in a single function? Like

function type = determineUI
...
end

where type = 'matlab' if matlab, type = 'octave' if octave or something similar. That would be much more useful in most implementations...