uruba /
FinanCalc
| @@ 276-292 (lines=17) @@ | ||
| 273 | /** |
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| 274 | * @return string [Value of a single debt repayment instance as a string] |
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| 275 | */ |
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| 276 | public function getDebtSingleRepayment() |
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| 277 | { |
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| 278 | // single repayment 'K = PV/((1-v^n)/i)' |
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| 279 | return MathFuncs::div( |
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| 280 | $this->debtPrincipal, |
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| 281 | MathFuncs::div( |
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| 282 | MathFuncs::sub( |
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| 283 | 1, |
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| 284 | MathFuncs::pow( |
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| 285 | $this->getDebtDiscountFactor(), |
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| 286 | $this->debtNoOfCompoundingPeriods |
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| 287 | ) |
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| 288 | ), |
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| 289 | $this->debtInterest |
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| 290 | ) |
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| 291 | ); |
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| 292 | } |
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| 293 | ||
| 294 | /** |
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| 295 | * @return string [Value of a single debt repayment instance as a string] |
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| @@ 297-313 (lines=17) @@ | ||
| 294 | /** |
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| 295 | * @return string [Value of a single debt repayment instance as a string] |
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| 296 | */ |
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| 297 | public function getDebtSingleRepayment_Rounded() { |
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| 298 | // single repayment 'K = PV/((1-v^n)/i)' |
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| 299 | return MathFuncs::round_up( |
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| 300 | MathFuncs::div( |
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| 301 | $this->debtPrincipal, |
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| 302 | MathFuncs::div( |
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| 303 | MathFuncs::sub( |
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| 304 | 1, |
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| 305 | MathFuncs::pow( |
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| 306 | $this->getDebtDiscountFactor(), |
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| 307 | $this->debtNoOfCompoundingPeriods |
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| 308 | ) |
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| 309 | ), |
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| 310 | $this->debtInterest |
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| 311 | ) |
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| 312 | ), 2); |
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| 313 | } |
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| 314 | ||
| 315 | /** |
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| 316 | * @return RepaymentInstance[] [Array of individual debt repayments (RepaymentInstances)] |
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