{
    "Function": "sub",
    "File": "contracts/peripheral_contracts/SafeMathE.sol",
    "Parent Contracts": [],
    "High-Level Calls": [],
    "Internal Calls": [
        "require(bool,string)"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {\n        require((z = x - y) <= x, \"ds-math-sub-underflow\");\n    }"
}