Contract 0xfA3E7d864cf426381aF1A990FD2E19d56b03dF33 3

/**
 *Submitted for verification at Arbiscan on 2022-10-19
*/

// Sources flattened with hardhat v2.9.6 https://hardhat.org

// File contracts/libraries/SafeMath.sol

//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.7.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
  /**
   * @dev Returns the addition of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `+` operator.
   *
   * Requirements:
   * - Addition cannot overflow.
   */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    return add(a, b, "SafeMath: addition overflow");
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   * - Subtraction cannot overflow.
   */
  function add(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, errorMessage);

    return c;
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    return sub(a, b, "SafeMath: subtraction overflow");
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b <= a, errorMessage);
    uint256 c = a - b;

    return c;
  }

  /**
   * @dev Returns the multiplication of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `*` operator.
   *
   * Requirements:
   * - Multiplication cannot overflow.
   */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
    if (a == 0) {
      return 0;
    }

    uint256 c = a * b;
    require(c / a == b, "SafeMath: multiplication overflow");

    return c;
  }

  /**
   * @dev Returns the integer division of two unsigned integers. Reverts on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    return div(a, b, "SafeMath: division by zero");
  }

  /**
   * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    // Solidity only automatically asserts when dividing by 0
    require(b > 0, errorMessage);
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold

    return c;
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * Reverts when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    return mod(a, b, "SafeMath: modulo by zero");
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * Reverts with custom message when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b != 0, errorMessage);
    return a % b;
  }
}


// File contracts/interfaces/ERC20Interface.sol

pragma solidity ^0.7.0;

interface ERC20Interface {
  /**
   * @dev Returns the amount of tokens in existence.
   */
  function totalSupply() external view returns (uint256);

  /**
   * @dev Returns the token decimals.
   */
  function decimals() external view returns (uint8);

  /**
   * @dev Returns the token symbol.
   */
  function symbol() external view returns (string memory);

  /**
  * @dev Returns the token name.
  */
  function name() external view returns (string memory);

  /**
   * @dev Returns the bep token owner.
   */
  function getOwner() external view returns (address);

  /**
   * @dev Returns the amount of tokens owned by `account`.
   */
  function balanceOf(address account) external view returns (uint256);

  /**
   * @dev Moves `amount` tokens from the caller's account to `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, uint256 amount) external returns (bool);

  /**
   * @dev Returns the remaining number of tokens that `spender` will be
   * allowed to spend on behalf of `owner` through {transferFrom}. This is
   * zero by default.
   *
   * This value changes when {approve} or {transferFrom} are called.
   */
  function allowance(address _owner, address spender) external view returns (uint256);

  /**
   * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * IMPORTANT: Beware that changing an allowance with this method brings the risk
   * that someone may use both the old and the new allowance by unfortunate
   * transaction ordering. One possible solution to mitigate this race
   * condition is to first reduce the spender's allowance to 0 and set the
   * desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   *
   * Emits an {Approval} event.
   */
  function approve(address spender, uint256 amount) external returns (bool);

  /**
   * @dev Moves `amount` tokens from `sender` to `recipient` using the
   * allowance mechanism. `amount` is then deducted from the caller's
   * allowance.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

  /**
   * @dev Emitted when `value` tokens are moved from one account (`from`) to
   * another (`to`).
   *
   * Note that `value` may be zero.
   */
  event Transfer(address indexed from, address indexed to, uint256 value);

  /**
   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
   * a call to {approve}. `value` is the new allowance.
   */
  event Approval(address indexed owner, address indexed spender, uint256 value);
}


// File contracts/interfaces/PriceOracle.sol

pragma solidity ^0.7.0;

abstract contract PriceOracle {
    /// @notice Indicator that this is a PriceOracle contract (for inspection)
    bool public constant isPriceOracle = true;

    /**
      * @notice Get the underlying price of a cToken asset
      * @param market The cToken to get the underlying price of
      * @return The underlying asset price mantissa (scaled by 1e18).
      *  Zero means the price is unavailable.
      */
    function getUnderlyingPrice(address market) external virtual view returns (uint);

}


// File contracts/Converter.sol

pragma solidity ^0.7.0;
contract Converter {
    using SafeMath for uint256;

    function convertUsdAmountToAssetAmount(
        uint256 usdAmount,
        address assetAddress
    ) public view returns (uint256) {
        ERC20Interface token = ERC20Interface(assetAddress);
        uint256 tokenDecimal = uint256(token.decimals());
        uint256 defaultDecimal = 18;
        if (defaultDecimal == tokenDecimal) {
            return usdAmount;
        } else if (defaultDecimal > tokenDecimal) {
            return usdAmount.div(10**(defaultDecimal.sub(tokenDecimal)));
        } else {
            return usdAmount.mul(10**(tokenDecimal.sub(defaultDecimal)));
        }
    }

    function convertAssetAmountToUsdAmount(
        uint256 assetAmount,
        address assetAddress
    ) public view returns (uint256) {
        ERC20Interface token = ERC20Interface(assetAddress);
        uint256 tokenDecimal = uint256(token.decimals());
        uint256 defaultDecimal = 18;
        if (defaultDecimal == tokenDecimal) {
            return assetAmount;
        } else if (defaultDecimal > tokenDecimal) {
            return assetAmount.mul(10**(defaultDecimal.sub(tokenDecimal)));
        } else {
            return assetAmount.div(10**(tokenDecimal.sub(defaultDecimal)));
        }
    }

    function getUsdAmount(
        address market,
        uint256 assetAmount,
        address priceOracle
    ) public view returns (uint256 usdAmount) {
        uint256 usdPrice = PriceOracle(priceOracle).getUnderlyingPrice(market);
        require(usdPrice > 0, "upe");
        usdAmount = (assetAmount.mul(usdPrice)).div(10**8);
    }

    // verified not
    function getAssetAmount(
        address market,
        uint256 usdAmount,
        address priceOracle
    ) public view returns (uint256 assetAmount) {
        uint256 usdPrice = PriceOracle(priceOracle).getUnderlyingPrice(market);
        require(usdPrice > 0, "usd price error");
        assetAmount = (usdAmount.mul(10**8)).div(usdPrice);
    }
}

[{"inputs":[{"internalType":"uint256","name":"assetAmount","type":"uint256"},{"internalType":"address","name":"assetAddress","type":"address"}],"name":"convertAssetAmountToUsdAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"usdAmount","type":"uint256"},{"internalType":"address","name":"assetAddress","type":"address"}],"name":"convertUsdAmountToAssetAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"market","type":"address"},{"internalType":"uint256","name":"usdAmount","type":"uint256"},{"internalType":"address","name":"priceOracle","type":"address"}],"name":"getAssetAmount","outputs":[{"internalType":"uint256","name":"assetAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"market","type":"address"},{"internalType":"uint256","name":"assetAmount","type":"uint256"},{"internalType":"address","name":"priceOracle","type":"address"}],"name":"getUsdAmount","outputs":[{"internalType":"uint256","name":"usdAmount","type":"uint256"}],"stateMutability":"view","type":"function"}]

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