38        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
 
   53            return $e->getMessage();
 
   77        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
 
   92            return $e->getMessage();
 
   96        if ($numberOfPeriods < 0) {
 
  121        $type = FinancialConstants::PAYMENT_END_OF_PERIOD
 
  136            return $e->getMessage();
 
  140        if ($payment == 0.0) {
 
  149        int $numberOfPeriods,
 
  154        if ($rate !== null && $rate != 0) {
 
  155            return -$presentValue *
 
  156                (1 + $rate) ** $numberOfPeriods - $payment * (1 + $rate * 
$type) * ((1 + $rate) ** $numberOfPeriods - 1)
 
  160        return -$presentValue - $payment * $numberOfPeriods;
 
  165        int $numberOfPeriods,
 
  171            return (-$payment * (1 + $rate * 
$type)
 
  172                    * (((1 + $rate) ** $numberOfPeriods - 1) / $rate) - $futureValue) / (1 + $rate) ** $numberOfPeriods;
 
  175        return -$futureValue - $payment * $numberOfPeriods;
 
  189            if ($presentValue == 0.0) {
 
  190                return Functions::NAN();
 
  193            return log(($payment * (1 + $rate * 
$type) / $rate - $futureValue) /
 
  194                    ($presentValue + $payment * (1 + $rate * 
$type) / $rate)) / log(1 + $rate);
 
  197        return (-$presentValue - $futureValue) / $payment;
 
An exception for terminatinating execution or to throw for unit testing.
static validatePeriodType($type)
static validateRate($rate)
static validatePresentValue($presentValue)
static validateFutureValue($futureValue)
static calculateFutureValue(float $rate, int $numberOfPeriods, float $payment, float $presentValue, int $type)
static presentValue( $rate, $numberOfPeriods, $payment=0.0, $futureValue=0.0, $type=FinancialConstants::PAYMENT_END_OF_PERIOD)
PV.
static periods( $rate, $payment, $presentValue, $futureValue=0.0, $type=FinancialConstants::PAYMENT_END_OF_PERIOD)
NPER.
static calculatePresentValue(float $rate, int $numberOfPeriods, float $payment, float $futureValue, int $type)
static calculatePeriods(float $rate, float $payment, float $presentValue, float $futureValue, int $type)
static futureValue( $rate, $numberOfPeriods, $payment=0.0, $presentValue=0.0, $type=FinancialConstants::PAYMENT_END_OF_PERIOD)
FV.
static validateInt($value)
static validateFloat($value)
static flattenSingleValue($value='')
Convert an array to a single scalar value by extracting the first element.
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