CS48L32_EQ_MAX_COEFF
return abs(a) > CS48L32_EQ_MAX_COEFF;
if (abs(b) > CS48L32_EQ_MAX_COEFF)
if (abs((a << 16) / (CS48L32_EQ_MAX_COEFF + 1 - b)) >= ((CS48L32_EQ_MAX_COEFF + 1) << 4))