InterestRatesLib

Author: Morpho Labs

Library helping to compute the new peer-to-peer indexes.

Functions

computeP2PIndexes

Computes and returns the new peer-to-peer indexes of a market given its parameters.

function computeP2PIndexes(Types.IndexesParams memory params)
    internal
    pure
    returns (uint256 newP2PSupplyIndex, uint256 newP2PBorrowIndex);

Returns

Name	Type	Description
`newP2PSupplyIndex`	`uint256`	The peer-to-peer supply index.
`newP2PBorrowIndex`	`uint256`	The peer-to-peer borrow index.

computeGrowthFactors

Computes and returns the new growth factors associated to a given pool's supply/borrow index & Morpho's peer-to-peer index.

function computeGrowthFactors(
    uint256 newPoolSupplyIndex,
    uint256 newPoolBorrowIndex,
    uint256 lastPoolSupplyIndex,
    uint256 lastPoolBorrowIndex,
    uint256 p2pIndexCursor,
    uint256 reserveFactor
) internal pure returns (Types.GrowthFactors memory growthFactors);

Parameters

Name	Type	Description
`newPoolSupplyIndex`	`uint256`	The pool's current supply index.
`newPoolBorrowIndex`	`uint256`	The pool's current borrow index.
`lastPoolSupplyIndex`	`uint256`	The pool's last supply index.
`lastPoolBorrowIndex`	`uint256`	The pool's last borrow index.
`p2pIndexCursor`	`uint256`	The peer-to-peer index cursor for the given market.
`reserveFactor`	`uint256`	The reserve factor of the given market.

Returns

Name	Type	Description
`growthFactors`	`Types.GrowthFactors`	The market's indexes growth factors (in ray).

computeP2PIndex

Computes and returns the new peer-to-peer index of a market given its parameters.

function computeP2PIndex(
    uint256 poolGrowthFactor,
    uint256 p2pGrowthFactor,
    Types.MarketSideIndexes256 memory lastIndexes,
    uint256 scaledDelta,
    uint256 scaledP2PTotal,
    uint256 proportionIdle
) internal pure returns (uint256);

Parameters

Name	Type	Description
`poolGrowthFactor`	`uint256`	The pool growth factor.
`p2pGrowthFactor`	`uint256`	The peer-to-peer growth factor.
`lastIndexes`	`Types.MarketSideIndexes256`	The last pool & peer-to-peer indexes.
`scaledDelta`	`uint256`	The last scaled peer-to-peer delta (pool unit).
`scaledP2PTotal`	`uint256`	The last scaled total peer-to-peer amount (P2P unit).
`proportionIdle`	`uint256`

Returns

Name	Type	Description
`<none>`	`uint256`	newP2PIndex The updated peer-to-peer index (in ray).