Logical const

[Peter Alexander]

On 30/11/10 6:21 AM, so wrote:
> I can understand Peter using Matrix just for example but still i have to
> say.
> A small vector/matrix with an extra field to memoize things perform
> likely worse than their usual implementations.
> That small extra field might just destroy any alignments, optimizations,
> which are scarier than the computation itself.

This may be true for this particular case, but has no bearing on the 
discussion in general.