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unchecked on TickMath to ensure compatibility

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This commit is contained in:
7400
2023-11-01 18:57:59 -07:00
parent 139449f3e9
commit b63bd8cbd3
1 changed files with 4 additions and 4 deletions
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8
lib_sol8/v3-core/contracts/libraries/TickMath.sol
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@@ -20,7 +20,7 @@ library TickMath {
/// @param tick The input tick for the above formula
/// @return sqrtPriceX96 A Fixed point Q64.96 number representing the sqrt of the ratio of the two assets (token1/token0)
/// at the given tick
function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) {
function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) {unchecked{
uint256 absTick = tick < 0 ? uint256(-int256(tick)) : uint256(int256(tick));
require(absTick <= uint256(int256(MAX_TICK)), 'T');
@@ -51,14 +51,14 @@ library TickMath {
// we then downcast because we know the result always fits within 160 bits due to our tick input constraint
// we round up in the division so getTickAtSqrtRatio of the output price is always consistent
sqrtPriceX96 = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1));
}
}}
/// @notice Calculates the greatest tick value such that getRatioAtTick(tick) <= ratio
/// @dev Throws in case sqrtPriceX96 < MIN_SQRT_RATIO, as MIN_SQRT_RATIO is the lowest value getRatioAtTick may
/// ever return.
/// @param sqrtPriceX96 The sqrt ratio for which to compute the tick as a Q64.96
/// @return tick The greatest tick for which the ratio is less than or equal to the input ratio
function getTickAtSqrtRatio(uint160 sqrtPriceX96) internal pure returns (int24 tick) {
function getTickAtSqrtRatio(uint160 sqrtPriceX96) internal pure returns (int24 tick) {unchecked{
// second inequality must be < because the price can never reach the price at the max tick
require(sqrtPriceX96 >= MIN_SQRT_RATIO && sqrtPriceX96 < MAX_SQRT_RATIO, 'R');
uint256 ratio = uint256(sqrtPriceX96) << 32;
@@ -202,4 +202,4 @@ library TickMath {
tick = tickLow == tickHi ? tickLow : getSqrtRatioAtTick(tickHi) <= sqrtPriceX96 ? tickHi : tickLow;
}
}
}}