{
    "Function": "sub",
    "File": "contracts/libraries/SafeMath.sol",
    "Parent Contracts": [],
    "High-Level Calls": [],
    "Internal Calls": [
        "require(bool,string)"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n    require(b <= a, 'SafeMath: subtraction overflow');\n    uint256 c = a - b;\n    return c;\n  }"
}