Eliminate the loop when encoding the split angle.
Eliminate the loop when encoding the split angle.

Use a closed-form formula for the codebook parameters instead.

Distrotech/celt,oneman/opus-oneman,oneman/opus-oneman,dezelin/celt,oneman/opus-oneman,mumble-voip/celt-0.11.0,dezelin/celt,dezelin/celt,mumble-voip/celt-0.11.0,mumble-voip/celt-0.11.0,Distrotech/celt,Distrotech/celt