#ifndef _CASHFLOW_IRR_HPP_
#define _CASHFLOW_IRR_HPP_
#ifndef _COMMON_ARRAY_HPP_
#include <common/array.hpp>
#endif
#ifndef _COMMON_MATH_HPP_
#include <common/math.hpp>
#endif

class IRR
{
public:
  static double irr(Array<double> &cashflows);
  static double npv(Array<double> &cashflows,double rate);
  static double pv(Array<double> &cashflows,double rate);
  static double pvD(Array<double> &cashflows,double rate);
private:
  static double IRR_ERROR;
	static double IRR_ACCURACY;
	static int IRR_MAX_ITERATIONS;
};
#endif