46 lines
1.2 KiB
Solidity
46 lines
1.2 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity 0.8.9;
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import { IReputation } from "./lib/interfaces/IReputation.sol";
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import { Owned } from "./lib/auth/Owned.sol";
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import { FixedPointMathLib as WADMath } from "./lib/utils/FixedPointMathLib.sol";
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contract Reputation is
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IReputation,
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Owned(msg.sender)
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{
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using WADMath for uint256;
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/// @dev Asymptote numerator constant value for the `limiter` fx.
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uint256 constant public maxLimit = 1e6;
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/// @dev Denominator's constant operand for the `limiter` fx.
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uint256 constant public magicValue = 2.5e11;
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constructor(/* */) {/* */}
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function limiter(uint256 _userCredit)
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external
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pure
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override(IReputation)
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returns(uint256 _spendLimit)
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{
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// _spendLimit = 1 + ( ( maxLimit * _userCredit ) / sqrt( magicValue * ( _userCredit * _userCredit ) ) );
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// return _spendLimit;
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unchecked {
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uint256 numeratorWad =
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maxLimit.mulWadDown(_userCredit);
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uint256 userCreditSquaredWad =
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_userCredit.mulWadDown(_userCredit);
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uint256 denominatorSqrtWad =
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(userCreditSquaredWad.mulWadDown(magicValue)).sqrt();
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_spendLimit = (1 + (numeratorWad).divWadDown(denominatorSqrtWad));
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}
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}
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}
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