interest

func CalculateAUMFee ¶ added in v1.1.0

func CalculateAUMFee(aum sdkmath.Int, bips uint32, duration int64) (fee sdkmath.Int, err error)

CalculateAUMFee computes the technology fee based on the vault's AUM and configured basis points.

Formula:

Fee = (AUM * (bips / 10000) * duration) / 31536000 (SecondsPerYear)

Returns the fee as a truncated sdkmath.Int.

func CalculateInterestEarned ¶

func CalculateInterestEarned(principal sdk.Coin, rate string, periodSeconds int64) (amount sdkmath.Int, err error)

CalculateInterestEarned computes the continuously compounded interest for a given principal over a period.

It uses the formula `Interest = P * (e^(rt)) - P`, where:

• P is the `principal`.
• r is the annual `rate`.
• t is the time in years, derived from (`periodSeconds` / 31_536_000).

This function returns the interest as a `cosmosmath.Int`, truncating any fractional part to ensure compatibility with coin amounts. It uses deterministic arithmetic via `cosmosmath.LegacyDec` and approximates e^x using a Maclaurin series (`utils.ExpDec`).