org.apache.poi.ss.formula.functions
Class Npv
java.lang.Object
org.apache.poi.ss.formula.functions.Npv
- All Implemented Interfaces:
- Function
public final class Npv
- extends java.lang.Object
- implements Function
Calculates the net present value of an investment by using a discount rate
and a series of future payments (negative values) and income (positive
values). Minimum 2 arguments, first arg is the rate of discount over the
length of one period others up to 254 arguments representing the payments and
income.
- Author:
- SPetrakovsky, Marcel May
Constructor Summary |
Npv()
|
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Npv
public Npv()
evaluate
public ValueEval evaluate(ValueEval[] args,
int srcRowIndex,
int srcColumnIndex)
- Specified by:
evaluate
in interface Function
- Parameters:
args
- the evaluated function arguments. Empty values are represented with
BlankEval
or MissingArgEval
, never null
.srcRowIndex
- row index of the cell containing the formula under evaluationsrcColumnIndex
- column index of the cell containing the formula under evaluation
- Returns:
- The evaluated result, possibly an
ErrorEval
, never null
.
Note - Excel uses the error code #NUM! instead of IEEE NaN, so when
numeric functions evaluate to Double.NaN
be sure to translate the result to ErrorEval.NUM_ERROR
.