19e06acc65
I made a few choices so far that can probably be discussed: - got rid of `modn` on `UInt`, nobody seems to use it apart from the definition of `shift` which can use normal `mod` - removed the previous defeq optimized definition of `USize.size` in favor for a normal one. The motivation was to allow `OfNat` to work which doesn't seem to be necessary anymore afaict. - Minimized uses of `.val`, should we maybe mark it deprecated? - Mostly got rid of `.val` in basically all theorems as the proper next level of API would now be `.toBitVec`. We could probably re-prove them but it would be more annoying given the change of definition. - Did not yet redefine `log2` in terms of `BitVec` as this would require a `log2` in `BitVec` as well, do we want this? - I added a couple of theorems around the relation of `<` on `UInt` and `Nat`. These were previously not needed because defeq was used all over the place to save us. I did not yet generalize these to all types as I wasn't sure if they are the appropriate lemma that we want to have.
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InfTree.node.sizeOf_spec.{u} {α : Type u} [SizeOf α] (children : Nat → InfTree α) : sizeOf (InfTree.node children) = 1
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