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LiquidityMath
Functions
addDelta
  function addDelta(
    uint128 x,
    int128 y
  ) internal pure returns (uint128 z)
Add a signed liquidity delta to liquidity and revert if it overflows or underflows
Parameters:
| Name | Type | Description | 
|---|---|---|
| x | uint128 | The liquidity before change | 
| y | int128 | The delta by which liquidity should be changed | 
Return Values:
| Name | Type | Description | 
|---|---|---|
| z | uint128 | The liquidity delta |