INF_RESULT TxINF_BankSoft::FV()
{
  // Input port values are mapped to the m_pInParamVector array in

  // the InitParams method. Use m_pInParamVector[i].IsValid() to check

  // if they are valid. Use m_pInParamVector[i].GetLong or GetDouble,

  // etc. to get their value. Generate output data into m_pOutParamVector.
  //  TODO: Fill in implementation of the FV method here.
    ostrstream ss;
    char* s;
    INF_BOOLEAN bVal;
    double v;
    TINFParam* Rate = &m_pInParamVector[0];
    TINFParam* nPeriods = &m_pInParamVector[1];
    TINFParam* Payment = &m_pInParamVector[2];
    TINFParam* PresentValue = &m_pInParamVector[3];
    TINFParam* PaymentType = &m_pInParamVector[4];
    TINFParam* FV = &m_pOutParamVector[0];
    bVal =
      INF_BOOLEAN(
        Rate->IsValid() &&
        nPeriods->IsValid() &&
        Payment->IsValid() &&
        PresentValue->IsValid() &&
        PaymentType->IsValid()
      );
    if (bVal == INF_FALSE)
    {
      FV->SetIndicator(INF_SQL_DATA_NULL);
      return INF_SUCCESS;
    }
    v = pow((1 + Rate->GetDouble()), (double)nPeriods->GetLong());
    FV->SetDouble(
      -(
         (PresentValue->GetDouble() * v) +
         (Payment->GetDouble() *
           (1 + (Rate->GetDouble() * PaymentType->GetLong()))) *
         ((v - 1) / Rate->GetDouble())
      )
    );
    ss << "The calculated future value is: " << FV->GetDouble() <<ends;
    s = ss.str();
    (*m_pfnMessageCallback)(E_MSG_TYPE_LOG, 0, s);
    (*m_pfnMessageCallback)(E_MSG_TYPE_ERR, 0, s);
    delete [] s;
    return INF_SUCCESS;
}

#include <math.h>
#include <strstream> using namespace std;

#include <math.h>
#include <strstream.h>