# Functions
reversed function CalculatePurchaseReturn deposit = reserve * (((wantReceive + supply) / supply)^(100/c) - 1).
Return = supply * ((1 + deposit / reserve) ^ (crr / 100) - 1).
reversed function CalculateSaleReturn -(-1 + (-(wantReceive - reserve)/reserve)^(1/crr)) * supply.
Return = reserve * (1 - (1 - sellAmount / supply) ^ (100 / crr)).