// slnum.h: interface for the slnum class.
//定義一個(gè)超高精度的類(lèi)slnum，用以實(shí)現(xiàn)超過(guò)20位有效數(shù)字整型數(shù)值的運(yùn)算，并具有
//兼容已有整型數(shù)據(jù)int的能力，能與int數(shù)據(jù)混合運(yùn)算。
//版權(quán)所有，貴州師范大學(xué)數(shù)學(xué)與計(jì)算機(jī)科學(xué)系2001成計(jì)本班羅國(guó)文（貴州天柱二中）
//凡引用本文件不得刪除上述信息
//////////////////////////////////////////////////////////////////////


#if !defined(AFX_SLNUM_H__7CCD5AC4_58A5_11D7_BAE3_00E04C41E1AD__INCLUDED_)
#define AFX_SLNUM_H__7CCD5AC4_58A5_11D7_BAE3_00E04C41E1AD__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class slnum  
{
public:
	char * soure;  //數(shù)的字符串形式
	int sign;	  //數(shù)的符號(hào)：>=0時(shí)為+1；<0時(shí)為-1
	int arr_n;	  //數(shù)轉(zhuǎn)換為數(shù)組表示后數(shù)組的大小
	long  *sl;	  //數(shù)的數(shù)組表示
public:
	slnum();
	slnum(const char * s);
	bool operator >(const slnum &num);		//大于比較
	bool operator >=(const slnum &num);		//大于等于比較
	bool operator ==(const slnum &num);		//相等比較
	bool operator <(const slnum &num);		//小于比較
	bool operator <=(const slnum &num);		//小于等于比較
	bool operator !=(const slnum &num);		//不等于比較
	slnum operator +(const slnum &num);     //加運(yùn)算
	slnum operator +(int num);				//與常規(guī)整數(shù)的加運(yùn)算
	slnum operator -(const slnum &num);		//減運(yùn)算
	slnum operator -(int num);				//與常規(guī)整數(shù)的減運(yùn)算
	slnum operator *(const slnum &num);		//乘運(yùn)算
	slnum operator *(int num);				//與常規(guī)整數(shù)的乘運(yùn)算
	slnum operator /(const  slnum &num);     //除運(yùn)算
	slnum operator /(int num);				//與常規(guī)整數(shù)的除運(yùn)算
	void operator =(int num);				//用常規(guī)整數(shù)進(jìn)行賦值
	void operator =(char * num);				//用常規(guī)整數(shù)串進(jìn)行賦值
	slnum operator %(const slnum &num);		//求余運(yùn)算
	slnum operator %(int num);				//與常規(guī)整數(shù)的求余運(yùn)算
	slnum operator -();						//求相反數(shù)
	friend void regulator(slnum *num);		//進(jìn)位、借位調(diào)整器
	friend void  regulator_sign(slnum *num); //符號(hào)調(diào)整  
	void setval(const char * s);				//設(shè)置值
	char * getval();							//獲取值
	friend void sltostr(slnum *num);		//將數(shù)值數(shù)組轉(zhuǎn)換為內(nèi)部串soure
        friend slnum abs(const slnum &num);	//求絕對(duì)值
	virtual ~slnum();

};

#endif // !defined(AFX_SLNUM_H__7CCD5AC4_58A5_11D7_BAE3_00E04C41E1AD__INCLUDED_)