s32_div_u32_round_closest
csi_idx = s32_div_u32_round_closest(freq_diff, CARRIER_SPACING_78_125);
nbi_frac_tone_idx = s32_div_u32_round_closest(nbi_frac_idx,
csi_idx = s32_div_u32_round_closest(freq_diff, CARRIER_SPACING_78_125);
csi_idx = s32_div_u32_round_closest(freq_diff, CARRIER_SPACING_78_125);
nbi_frac_tone_idx = s32_div_u32_round_closest(nbi_frac_idx, CARRIER_SPACING_78_125);
csi_idx = s32_div_u32_round_closest(freq_diff, CARRIER_SPACING_78_125);
s32_div_u32_round_closest(nbi_frac_idx, CARRIER_SPACING_78_125);