1 | <?php |
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8 | class InterestAmountCalculator implements InterestAmountCalculatorInterface |
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9 | { |
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10 | /** |
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11 | * Calculate interest amount for present value based on interest rate |
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12 | * @param float $presentValue |
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13 | * @param float $interestRate |
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14 | * @return float |
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15 | */ |
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16 | 4 | public function getInterestAmount(float $presentValue, float $interestRate): float |
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21 | |||
22 | /** |
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23 | * @param float $interestRate Yearly interest rate (based on 360 days) |
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24 | * @param float $periodLength Period length in days |
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25 | * @return float |
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26 | */ |
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27 | 4 | public function getPeriodInterestRate(float $interestRate, float $periodLength): float |
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32 | } |
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33 |