[vorbis-dev] New LSP code committed

[Monty]

> Actually, I wouldn't use CORDIC for this. It was a thinko. A simple iteration
> will do:
> 
> w_0 = 1.0;
> w_1 = cos(theta);
> w_{n+1} = 2 * cos(theta) * w_n - w_{n-1}

OK, that's the computation I thought you meant. 

> Do the lspcos's or the w's need the resolution? If the lspcos's do, yes,
> use the same table for w lookup. If it is fast, of course.

It's the lspcos array that needs fine angle precision, so I'm going to the same
lookup for both.

Monty

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