Z_SINC_COEFF_IDX
if (Z_SINC_COEFF_IDX(info) != i)
((int32_t)(((uint64_t)z_coeff_tab[Z_SINC_COEFF_IDX(i)].len << \
((z_coeff_tab[Z_SINC_COEFF_IDX(i)].len - 1) >> (Z_DRIFT_SHIFT - 1))
lmax = z_coeff_tab[Z_SINC_COEFF_IDX(info)].len;