// OilMethod.h: interface for the COilMethod class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_OILMETHOD_H__490F8C21_3175_47A3_8B82_68C01535C454__INCLUDED_)
#define AFX_OILMETHOD_H__490F8C21_3175_47A3_8B82_68C01535C454__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
static double k01=613.9723,k11=0.0000;
static double k02[3]={346.4228,594.5418,186.9696};
static double k12[3]={0.4388  ,0.0000  ,0.4862};
static double k03=0.0000,k13=0.6278;

class COilMethod  
{
public:
	double Cfc_V(double dT,double dDst,int n);
	int sign(double dNum);
	double Coefficient_15Vs20(double dC20,double dC15);
	double Dst_20(double dDst,double dCft);
	double Dst_15(double dDst,double dCft);
	double Coefficient_DT15(double dDstR,double dTR);
	double Dst_ST(double dDst,double dT,int nOilType);
	double Coeffication_ThermalEx(double dK0,double dK1,double rho15);
	double Coefficient_V(double dCTK,double dDiffT15);
	double Coefficient_TKLZ(double dK0,double dK1,double rho15);
	double Coefficient_TKMZ(double dK0,double dK1,double rho15);
	double Coefficient_T(double dT);
	double Diff_20(double dX);
	double Diff_15(double dX);
	int dntoi(double dX);
	double Decimal_R5(double dNum,int n);
	double Decimal_R(double dNum,int n);
	double Decimal_Tru(double dNum,int n);
	void SelKn(double D,int x);
	COilMethod();
	virtual ~COilMethod();
private:
	double K0,K1;

};

#endif // !defined(AFX_OILMETHOD_H__490F8C21_3175_47A3_8B82_68C01535C454__INCLUDED_)