Improve lr_hi_power epsilon accuracy.

            q_lr_hi_power = stereo_type_detect->q_right_hi_power;

        }

        q_lr_hi_power = sub( q_lr_hi_power, 1 ); /* = (q_lr_hi_power * 2) */

#ifdef FIX_BASOP_2442_MASA2TC_TO_MONO_AND_AMBI

        /* We need to use accurately EPSILON from float (1e-15) in correct Q format as it can

         * dominate the division in high bands when total_hi_power is low or zero. This leads to

         * decision differences between BASOP and float. Close enough value is 2^-50 which is

         * about 0.88e-15. */

        Word32 denom_fx;

        Word16 q_denom;

        IF( GE_16( stereo_type_detect->q_total_hi_power, 81 ) )

        {

            /* EPSILON dominates here so use it directly */

            denom_fx = 0x40000000; /* 2^-50 in Q80 */

            move32();

            q_denom = 80;

            move16();

        }

        ELSE

        {

            /* Add EPSILON in proper Q */

            Word32 eps_fx = L_shr( 0x40000000, sub( 80, stereo_type_detect->q_total_hi_power ) ); /* EPSILON in Q(q_total_hi_power) */

            denom_fx = L_add_sat( stereo_type_detect->total_hi_power_fx, eps_fx );

            q_denom = stereo_type_detect->q_total_hi_power;

        }

        temp = BASOP_Util_Divide3232_Scale_newton( lr_hi_power_fx, denom_fx, &exp );

        exp = sub( 31, add( sub( 31, exp ), sub( q_lr_hi_power, q_denom ) ) );

        exp = s_min( exp, 0 ); /* 2*min(l,r) <= l+r so we can clamp ratio <= 1 */

#else

        temp = BASOP_Util_Divide3232_Scale_newton( lr_hi_power_fx, L_add( stereo_type_detect->total_hi_power_fx, EPSILON_FX ), &exp ); // Q=31-(exp+ stereo_type_detect->q_total_hi_power-q_lr_hi_power)

        exp = sub( 31, add( sub( 31, exp ), sub( q_lr_hi_power, stereo_type_detect->q_total_hi_power ) ) );

#endif

        temp = BASOP_Util_Log2( temp ); // q25

        IF( NE_32( temp, MIN_32 ) )

        {

#ifdef FIX_BASOP_2442_MASA2TC_TO_MONO_AND_AMBI

            IF( LT_16( exp, -63 ) )

            {

                temp = MIN_32;

                move32();

            }

            ELSE

            {

                temp = Mpy_32_32( L_add( L_shl( exp, Q25 ), temp ), LOG10_2_Q31 ); // Q25

            }

#else

            temp = Mpy_32_32( L_add( L_shl( exp, Q25 ), temp ), LOG10_2_Q31 ); // Q25

#endif

        }

        // 20480 = 10 in Q11

        lr_total_hi_ratio_fx = Mpy_32_16_1( temp, 20480 ); // Q21