public IEnumerable <double> Compute(NetPresentValueCalculationInputDto input)
{
var result = new List <double>();
var netPresentValueAmount = input.CashFlows
.Sum(cashFlow => cashFlow.CashFlowAmount / Math.Pow((input.DiscountRate / 100) + 1, cashFlow.Id));
result.Add(netPresentValueAmount - input.InitialInvestment);
return(result);
}
public IEnumerable <double> Compute(NetPresentValueCalculationInputDto input)
{
var result = new List <double>();
double differenceBetweenIncrementalRateAndUpperBound = 0;
for (double discountRate = input.LowerBound; discountRate <= input.UpperBound;)
{
double netPresentValueAmount = input.CashFlows
.Sum(cashFlow => cashFlow.CashFlowAmount / Math.Pow((discountRate / 100) + 1, cashFlow.Id));
result.Add(netPresentValueAmount - input.InitialInvestment);
differenceBetweenIncrementalRateAndUpperBound = input.UpperBound - discountRate;
if (differenceBetweenIncrementalRateAndUpperBound != 0)
{
discountRate += Math.Min(differenceBetweenIncrementalRateAndUpperBound, input.IncrementalRate);
}
else
{
discountRate += 1;
}
}
return(result);
}
