Re: cellfun and parcellfun

[Robert Patterson]

On Fri, 2010-06-11 at 23:28 +0200, David Bateman wrote:
> It should be 
> relatively easy to do this except for the care needed with the fact that 
> the randlib generators all use the same state and the mersenne twister 
> based generators have separate states and so rand("state", "reset") 
> should change only the uniform generators state, but rand("seed", 
> "reset") should change all of them.
> 

I think I am doing something pretty stupid in trying to reset my RNGs:

octave:187> rand("state", 123); rande()
ans =  0.042798
octave:188> rand("state", 123); rande()
ans =  0.49064
octave:189> rand("state", 123); rande()
ans =  4.2087

I was expecting to get the same value each time.  Is the hash used to
initialise the Mersenne Twister non-deterministic?

Thanks

Robert