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<?php |
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namespace FinanCalc\Interfaces\Calculator { |
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use FinanCalc\Utils\Helpers; |
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use FinanCalc\Utils\MathFuncs; |
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/** |
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* Class BondInstanceAbstract |
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* @package FinanCalc\Interfaces |
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*/ |
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abstract class BondCalculatorAbstract extends CalculatorAbstract |
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{ |
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// face value of the bond = 'F' |
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protected $bondFaceValue; |
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// coupon rate of the bond per annum = 'c' |
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protected $bondAnnualCouponRate; |
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// number of years to the maturity of the bond |
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protected $bondYearsToMaturity; |
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// frequency of bond payments (expressed in a divisor of 12 months ~ 1 year) |
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// e.g.: divisor 2 means semi-annual payments |
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protected $bondPaymentFrequency; |
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/** |
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* @param $bondFaceValue |
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*/ |
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public function setBondFaceValue($bondFaceValue) |
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{ |
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if (Helpers::checkIfPositiveNumberOrThrowAnException($bondFaceValue)) { |
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$this->setProperty("bondFaceValue", $bondFaceValue); |
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} |
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} |
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/** |
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* @param $bondAnnualCouponRate |
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*/ |
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public function setBondAnnualCouponRate($bondAnnualCouponRate) |
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{ |
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if (Helpers::checkIfPositiveNumberOrThrowAnException($bondAnnualCouponRate)) { |
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$this->setProperty("bondAnnualCouponRate", $bondAnnualCouponRate); |
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} |
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} |
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/** |
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* @param $bondYearsToMaturity |
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*/ |
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public function setBondYearsToMaturity($bondYearsToMaturity) |
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{ |
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if (Helpers::checkIfPositiveNumberOrThrowAnException($bondYearsToMaturity)) { |
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$this->setProperty("bondYearsToMaturity", $bondYearsToMaturity); |
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} |
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} |
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/** |
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* @param $bondPaymentFrequency |
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*/ |
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public function setBondPaymentFrequency($bondPaymentFrequency) |
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{ |
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if (Helpers::checkIfPositiveNumberOrThrowAnException($bondPaymentFrequency)) { |
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$this->setProperty("bondPaymentFrequency", $bondPaymentFrequency); |
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} |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getBondFaceValue() |
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{ |
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return $this->bondFaceValue; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getBondAnnualCouponRate() |
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{ |
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return $this->bondAnnualCouponRate; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getBondYearsToMaturity() |
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{ |
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return $this->bondYearsToMaturity; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getBondPaymentFrequency() |
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{ |
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return $this->bondPaymentFrequency; |
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} |
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/** |
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* @return float |
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*/ |
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public function getCouponPayment() |
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{ |
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return ($this->bondAnnualCouponRate / $this->bondPaymentFrequency) * $this->bondFaceValue; |
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} |
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/** |
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* @return int |
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*/ |
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public function getBondNoOfPayments() |
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{ |
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// number of payments during the duration of the bond (up to the moment of its maturity) |
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// is calculated from the number of years of the duration of the bond |
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// multiplied by the number of payments per year (i.e., payment frequency) |
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//, floored (to eliminate the last remaining incomplete due period) |
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return intval(floor(MathFuncs::mul( |
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$this->bondYearsToMaturity, |
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$this->bondPaymentFrequency |
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))); |
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} |
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} |
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} |
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|
uruba /
FinanCalc
