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120amount0Used = ((cross - 1) / total1) + 1;
121amount1Used = ((cross - 1) / total0) + 1;

Copy
150) external view override returns (uint256 total0, uint256 total1) {
151    // Start with tokens currently held inside the vault
152    total0 = vaultBalance0;
153    total1 = vaultBalance1;
154
155    // Calculate value in positions
156    for (uint256 i = 0; i < positions.length; i++) {
157        (uint256 amount0, uint256 amount1) = _previewBurn(
158            poolManager,
159            poolId,
160            vaultAddress,
161            positions[i].lowerTick,
162            positions[i].upperTick,
163            bytes32(0),
164            totalFee,
165            feeDivisor
166        );
167        total0 += amount0;
168        total1 += amount1;
169    }
170}
171
172/// @notice Preview the principal + fees you'd get by burning a position.
173/// @dev Pass `salt = bytes32(0)` when you minted without a custom salt.
174/// @param poolManager The pool manager contract
175/// @param poolId The pool ID
176/// @param vaultAddress The address of the vault
177/// @param tickLower Lower tick of the range
178/// @param tickUpper Upper tick of the range
179/// @param salt Salt used when the position was minted
180/// @param totalFee The total fee percentage (multiplied by 10,000)
181/// @param feeDivisor The fee divisor constant
182/// @return amount0 Currency0 returned (principal + fees)
183/// @return amount1 Currency1 returned (principal + fees)
184function _previewBurn(
185    IPoolManager poolManager,
186    PoolId poolId,
187    address vaultAddress,
188    int24 tickLower,
189    int24 tickUpper,
190    bytes32 salt,
191    uint256 totalFee,
192    uint256 feeDivisor
193) private view returns (uint256 amount0, uint256 amount1) {