# Function Types

Function types are used to by [`quoteLayerZeroFee()`](https://stargateprotocol.gitbook.io/stargate/developers/cross-chain-swap-fee) to get the cross chain message fee.

For standard a Stargate `swap()`, use function type = `1`

```javascript
// all function types
uint8 public constant TYPE_SWAP_REMOTE            = 1;
uint8 public constant TYPE_ADD_LIQUIDITY          = 2;
uint8 public constant TYPE_REDEEM_LOCAL_CALL_BACK = 3;
uint8 public constant TYPE_WITHDRAW_REMOTE        = 4;
```

\
Each of the above types corresponds to a function within Stargate that sends a cross chain message.

* Type 1: Used for `swap()`
* Type 2: Used for `addLiquidity()`
* Type 3: Used for the B->A portion of an A->B->A `withdrawLocal()`
* Type 4: Use to initiate a `withdrawLocal()`