fix16_exp
(F16(1.) + fix16_exp(x))));
static fix16_t fix16_exp(fix16_t inValue);
(F16(1.) + fix16_exp(x)))) -
(F16(1.) + fix16_exp(x))))));
F1 = fix16_exp((fix16_mul(F16(VocAlgorithm_LP_ALPHA), abs_delta)));