Changes for IVAS-BASOP Ticket 1009: Complexity: High Complexity Overhead for...

Changes for IVAS-BASOP Ticket 1009: Complexity: High Complexity Overhead for ParamISM decoding to binaural

lib_com/basop_util.c:
Tuned instrumentation of 32-Bit division routine, now 24 bit accuracy
instead of 32 bit (cadence version)

lib_com/fft_fx.c:
Tuned instrumentation of small helper functions get_min_scalefactor and
L_norm_arr

lib_com/options.h:
Defined a macro for this fix 1009. It is only used in binaural renderer
for simplifiying divisions (32x32).

lib_com/tools.c:
Tuned instrumentation of small helper functions s_minimum etc.

lib_rend/ivas_dirac_dec_binaural_functions.c:
Defined precalculated values for EPSILON with full precision
Replaced division by constants by multiplications
Replaced square root of a division (division + sqrt) by ISqrt32+Mul
Simplified all matrix multiplication functions

Best regards
Arthur Tritthart, Fraunhofer IIS, 29-NOV-2024