/*

    Copyright 2020 DODO ZOO.
    SPDX-License-Identifier: Apache-2.0

*/

pragma solidity 0.6.9;
pragma experimental ABIEncoderV2;

import {SafeMath} from "./SafeMath.sol";


/**
 * @title DecimalMath
 * @author DODO Breeder
 *
 * @notice Functions for fixed point number with 18 decimals
 */
library DecimalMath {
    using SafeMath for uint256;

    uint256 constant ONE = 10**18;

    function mul(uint256 target, uint256 d) internal pure returns (uint256) {
        return target.mul(d) / ONE;
    }

    function mulFloor(uint256 target, uint256 d) internal pure returns (uint256) {
        return target.mul(d) / ONE;
    }

    function mulCeil(uint256 target, uint256 d) internal pure returns (uint256) {
        return target.mul(d).divCeil(ONE);
    }

    function divFloor(uint256 target, uint256 d) internal pure returns (uint256) {
        return target.mul(ONE).div(d);
    }

    function divCeil(uint256 target, uint256 d) internal pure returns (uint256) {
        return target.mul(ONE).divCeil(d);
    }
}