From: Tom Herbert <therb...@google.com>
Date: Thu, 19 Dec 2013 13:43:06 -0800

> +       u32 v, r;
> +       int off, rem;
> +
> +       off = idx / 8;
> +       rem = idx % 8;
> +
> +       v = (((unsigned int)key[off]) << 24) +
> +           (((unsigned int)key[off + 1]) << 16) +
> +           (((unsigned int)key[off + 2]) << 8) +
> +           (((unsigned int)key[off + 3]));
> +
> +       r = v << rem | (unsigned int)key[off + 4] >> (8 - rem);

Minor nit, since the type you are using is "u32", that's probably what
you should be casting to in these spots instead of "unsigned int".
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