Function pallet_parachain_staking::inflation::perbill_annual_to_perbill_round

pub fn perbill_annual_to_perbill_round(
    annual: Range<Perbill>,
    rounds_per_year: u32
) -> Range<Perbill>

Convert an annual inflation to a round inflation round = (1+annual)^(1/rounds_per_year) - 1