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Re: Distinguishing Octave from Matlab

From: David Bateman
Subject: Re: Distinguishing Octave from Matlab
Date: Fri, 15 Feb 2008 11:02:09 +0100
User-agent: Thunderbird (X11/20070914)

Primoz PETERLIN wrote:
> Hello everyone,
> I am sure this question has sprung up before, yet I am unable to find
> it in the archives. I am collaborating on a project with people using
> Matlab. The code is mostly portable, but there are a few quirks on one
> side or the other. The clumsy way which we are using now involves
> commenting out the Matlab code and uncommenting the Octave code on my
> side, while the guy on the other end performs the reverse process.
> What I would want to have is some way with which the script could
> automatically determine whether it is running in Octave or in Matlab,
> i.e., something like
> if (octave)
>    % some octave code here
> else
>    % equivalent matlab code here
> end
> Needless to say, it has to work on both ends. My closest match would
> be to use version() and some manually built-in knowledge (i.e., if the
> first character returned by version() is '2' or '3', we are likely to
> be running Octave, and if it is '7', we are likely to be running
> Matlab). Is there a more elegant way to do it?
> TIA, Primoz

Use Octave 3.0.0 and use the matlab syntax everywhere, in most cases it
should then just work.. If there are any other differences that prevent
it working then they should be reported as bugs. A function that does
what you want is

function ret = isoctave ()
  persistent isoct
  if (isempty (isoct))
     isoct = exist('OCTAVE_VERSION') ~= 0;
  ret = isoct;


David Bateman                                address@hidden
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