@CalcMgrExcelXNPV
Purpose:
Returns the net present value for a schedule of cash flows that is not necessarily periodic
Syntax:
Java Class: com.hyperion.calcmgr.common.excel.cdf.ExcelFinancialFunctions.XNPV(double,double[],double[])
CDF Spec: @CalcMgrExcelXNPV(rate, values, dates)