#pragma once

#include "iAlgMath_global.h"

class zxBessel;

// 本类的目的通过单例实现对XML文件解析之后的存储
class I_ALGMATH_EXPORT zxBesselInstance
{
public:

    // 获取对象，单例模式
    static zxBesselInstance* getInstance();

    // 关闭消耗
    static void release();

private:

    zxBesselInstance();
    ~zxBesselInstance();

public:

    // 为了方便与MATLAB的统一，再次封装
    // which 为0或1，分别对应I0I1K0K1
    double besselk(int which, double x, bool* pOk = nullptr);
    double besseli(int which, double x, bool* pOk = nullptr);

    // 20220717 baiwp，去除积分，改用直接计算的方式（伪积分）
    double besselk0_pseu(double x, bool* pOk = nullptr);

    // 返回对象体
    zxBessel* getBessel();

private:

    static zxBesselInstance* _instance;

    zxBessel* m_pBessel;
};

#define _bslHelper zxBesselInstance::getInstance()
#define _getBessel zxBesselInstance::getInstance()->getBessel

#define _besselk zxBesselInstance::getInstance()->besselk
#define _besseli zxBesselInstance::getInstance()->besseli

#define _besselI0 zxBesselInstance::getInstance()->getBessel()->besselI0
#define _besselI1 zxBesselInstance::getInstance()->getBessel()->besselI1
#define _besselK0 zxBesselInstance::getInstance()->getBessel()->besselK0
#define _besselK1 zxBesselInstance::getInstance()->getBessel()->besselK1

#define _getbesselI0 zxBesselInstance::getInstance()->getBessel()->getbesselI0
#define _getbesselI1 zxBesselInstance::getInstance()->getBessel()->getbesselI1
#define _getbesselK0 zxBesselInstance::getInstance()->getBessel()->getbesselK0
#define _getbesselK1 zxBesselInstance::getInstance()->getBessel()->getbesselK1

#define _besselk0_pseu zxBesselInstance::getInstance()->besselk0_pseu