Timothy B. Terriberry authored Mar 15, 2010 and Jean-Marc Valin committed Mar 16, 2010

Update the log2 approximation to accomodate the increased bit precision from bd0610d2. This requires another term in the power series to reduce the error to the level of truncation (peak absolute error 0.621785). Also refactor the rounding bias term so that further changes to DB_SHIFT will leave the result unbiased.

think of) to produce NaNs in the new PLC.

arithmetic.

introduced in Thorvald's previous patch.

Timothy Terriberry authored Oct 31, 2009 and Jean-Marc Valin committed Oct 31, 2009

Expose the normalized range for reciprocal square roots in fixed-point mode. This allows subsequnt calculations to use the full precision of the result.