On Wed, Nov 14, 2012 at 4:23 PM, Robert Layton <[email protected]>wrote:
>
> That said, I've used code under different licences as a *reference* before,
> just remembering not to copy it at all.
>
The legal definition of "derivative work" can make things dicey in these
situations.
But, to my mind (and I am not a lawyer, so do not take this as in any way
authoritative), there is definitely nothing wrong with running their code
on a sample problem (or several) and verifying that your independent
implementation arrives at the same or similar-enough results. This is how
the first non-Intel x86 chips were designed, after all, and the first
non-JVC VHS players, etc.
David
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