Timothy Terriberry authored 15 years ago and Jean-Marc Valin committed 15 years ago

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

budget at low bitrate.

Timothy B. Terriberry authored 15 years ago and Jean-Marc Valin committed 15 years ago

Accuracy for rsqrt, rcp, cos, and log2 is now at the level of truncation error
 for the current output resolution of these functions.
sqrt and exp2 still have non-trivial algebraic error, but this cannot be
 reduced much further using the current method without additional computation.
Also updates the fast float approximations for log2 and exp2 with coefficients
 that give slightly lower maximum relative error.

Patch modified by Jean-Marc Valin to leave the cos approximation as is and
leave the check for x<-15 in exp2 as is.

the VBR rate controller.

to be on the safe side (not that I observed any overflow, but I can't prove
it can't happen).

bit-rate

shift and removed the chec for DISABLE_STEREO in the mode creation.

by POSIX. The other _t types that are not part of the API are still there
for now. Also, got rid of all that was left of the 64-bit types.

creating the mode. This means that the same mode can be shared for mono and
stereo.

in the table.

simplification.

anything that its name implies)

decoder), declared a few things static