# V3Estimator

 This contract estimates v3 swap amounts

## Code

Github Link: (Will be updated after official launch)<br>

## Address

* Cypress : [0x09067f1b4E1a1CD08C91519D811F3D04c69a5a5f](https://scope.klaytn.com/account/0x09067f1b4E1a1CD08C91519D811F3D04c69a5a5f?tabId=internalTx)

## Events, Read-Only Functions, and State-Changing Functions

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{% tab title="Read-Only Functions" %}

## Read-Only Functions

**estimatePos**

```solidity
function estimatePos(
    struct IUniswapV3Pool pool, 
    address token, 
    uint256 amountIn
) external view returns (
    uint256 amountOut, 
    uint160 sqrtPriceX96After
)
```

**Parameters:**

<table><thead><tr><th width="134.66666666666666">Name</th><th width="178">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>pool</code></td><td><code>contract IUniswapV3Pool</code></td><td>The address of the pool</td></tr><tr><td><code>token</code></td><td>address</td><td>The token being swapped in</td></tr><tr><td><code>amountIn</code></td><td>uint256</td><td>The desired input amount</td></tr></tbody></table>

[**​**](https://docs.uniswap.org/contracts/v3/reference/core/UniswapV3Pool#parameters)**Return Values:**

<table><thead><tr><th width="219.66666666666666">Name</th><th width="101">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>amountOut</code></td><td>uint256</td><td>The amount of the token that would be received</td></tr><tr><td><code>sqrtPriceX96After</code></td><td>uint160</td><td>The sqrt price after the swap </td></tr></tbody></table>

**estimateNeg**

```solidity
function estimateNeg(
    contract IUniswapV3Pool pool, 
    address token, 
    uint256 amountOut
) external view returns (
    uint256 amountIn, 
    uint160 sqrtPriceX96After
)
```

**Parameters:**

<table><thead><tr><th width="145.66666666666666">Name</th><th width="178">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>pool</code></td><td><code>contract IUniswapV3Pool</code></td><td>The address of the pool</td></tr><tr><td><code>token</code></td><td>address</td><td>The token being swapped out</td></tr><tr><td><code>amountOut</code></td><td>uint256</td><td>The desired output amount</td></tr></tbody></table>

[**​**](https://docs.uniswap.org/contracts/v3/reference/core/UniswapV3Pool#parameters)**Return Values:**

<table><thead><tr><th width="219.66666666666666">Name</th><th width="101">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>amountIn</code></td><td>uint256</td><td>The amount required as the input for the swap in order to receive <code>amountOut</code></td></tr><tr><td><code>sqrtPriceX96After</code></td><td>uint160</td><td>The sqrt price after the swap </td></tr></tbody></table>

**estimate**

```solidity
function estimate(
    contract IUniswapV3Pool pool,
    bool zeroForOne,
    int256 amountSpecified
) public view returns (int256 amount0, int256 amount1, uint160 sqrtPriceX96After) {
```

**Parameters:**

<table><thead><tr><th width="202.66666666666666">Name</th><th width="178">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>pool</code></td><td><code>contract IUniswapV3Pool</code></td><td>The address of the pool</td></tr><tr><td><code>zeroForOne</code></td><td>bool</td><td>Is swap direction 0 -> 1?</td></tr><tr><td><code>amountSpecified</code></td><td>int256</td><td>The specified amount of token</td></tr></tbody></table>

[**​**](https://docs.uniswap.org/contracts/v3/reference/core/UniswapV3Pool#parameters)**Return Values:**

<table><thead><tr><th width="219.66666666666666">Name</th><th width="101">Type</th><th>Description</th></tr></thead><tbody><tr><td><code>amount0</code></td><td>int256</td><td>The changed amount of token0</td></tr><tr><td><code>amount1</code></td><td>int256</td><td>The changed amount of token1 </td></tr><tr><td><code>sqrtPriceX96After</code></td><td>uint160</td><td>The sqrt price after the swap </td></tr></tbody></table>

[**​**](https://docs.uniswap.org/contracts/v3/reference/core/UniswapV3Pool#parameters)
{% endtab %}
{% endtabs %}