More accurate sqrt approximation using MULT16_16_Q15() instead of Q14.
More accurate sqrt approximation using MULT16_16_Q15() instead of Q14.

dezelin/celt,oneman/opus-oneman,mumble-voip/celt-0.7.0,mumble-voip/celt-0.7.0,mumble-voip/celt-0.11.0,Distrotech/celt,Distrotech/celt,mumble-voip/celt-0.7.0,mumble-voip/celt-0.11.0,oneman/opus-oneman,dezelin/celt,dezelin/celt,oneman/opus-oneman,mumble-voip/celt-0.11.0,Distrotech/celt