#ifndef BLACK76
#define BLACK76

#ifdef WIN32
#include <Windows.h>
#endif
#include <math.h>
#include <iomanip>
#include <iostream>

#ifdef WIN32
typedef long long int64; 
typedef unsigned long long uint64;
#endif

using namespace std;


 
static const float a1f = 0.31938153 ;
static const float a2f = -0.356563782;
static const float a3f = 1.781477937;
static const float a4f = -1.821255978;
static const float a5f = 1.330274429;
static const float aNeededf = 0.3989423;
static const float kNeededf = 0.2316419;
static const float PIf = 3.14159265358979323846;

static const double a1d = 0.31938153 ;
static const double a2d = -0.356563782;
static const double a3d = 1.781477937;
static const double a4d = -1.821255978;
static const double a5d = 1.330274429;
static const double aNeededd = 0.3989423;
static const double kNeededd = 0.2316419;
static const double PId = 3.14159265358979323846;

class Black76
{
public:
	void runFloat(int numPasses);
	void runDouble(int numPasses);

private:
	float compute_Black76_float(char CallPutFlag, float S, float X, float T, float r, float v);
	double compute_Black76_double(char CallPutFlag, double S, double X, double T, double r, double v);

	static float compute_CND_float(float X);
	static double compute_CND_double(double X);
#ifndef WIN32
	static timespec diff(timespec start, timespec end);
#else
	static int64 GetTimeMs64();
#endif

};

#endif //BLACK76