Matlab to Octave - precision and differential equations

[R.S. Etienne]

Dear users,

I have a Matlab code which has problems with the double precision 
limitation of Matlab. I am therefore looking for alternatives, 
particularly those where I don't have to change my code too much, and 
therefore I stumbled upon Octave. Before installing it, I would like to 
know whether Octave has this double precision limitation, or not. Can 
someone please tell me? If it does not have this limitation, then can 
Octave handle ordinary differential equations? I am using Matlab's 
ode45; is there an Octave equivalent, preferably one where the Jacobian 
does not need to be specified?

Kind regards,

Rampal Etienne

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Rampal S. Etienne, PhD.
Community and Conservation Ecology Group
University of Groningen
Box 14
9750 AA Haren
The Netherlands
Tel: +31 50 363 2230
address@hidden
Web: www.rug.nl/biologie/onderzoek/onderzoekgroepen/cocon/people/etienne