[
    {
        "name": "exchange_underlying",
        "outputs": [],
        "inputs": [
            {
                "type": "int128",
                "name": "i"
            },
            {
                "type": "int128",
                "name": "j"
            },
            {
                "type": "uint256",
                "name": "dx"
            },
            {
                "type": "uint256",
                "name": "min_dy"
            }
        ],
        "constant": false,
        "payable": false,
        "type": "function",
        "gas": "5200817"
    },
    {
        "name": "exchange",
        "outputs": [],
        "inputs": [
            {
                "type": "int128",
                "name": "i"
            },
            {
                "type": "int128",
                "name": "j"
            },
            {
                "type": "uint256",
                "name": "dx"
            },
            {
                "type": "uint256",
                "name": "min_dy"
            }
        ],
        "constant": false,
        "payable": false,
        "type": "function",
        "gas": "5184573"
    }
]