MAX_FEE_RATE数据类型

[RandyPen]

const MAX_FEE_RATE: u128 = 10_000;

它那么小，为什么要 u128 呢

[RandyPen]

我看到了，为了方便后面调整运算精度

    fun compute_fee_amount(amount: u64, fee_rate: u128): u64 {
        (((amount as u128) * fee_rate / FEE_PRECISION) as u64)
    }