randnumber.h

VC常用算法集 书中所有的常用数值算法子过程按书中的章数分别放在以C开头的子目录中。所有这些为验证上述子过程而编的验证过程按书中的章数分别放在以D开头的子目录中。~..~所有为验证过程而做的工程

#include "time.h"

//used to generate a random number from the current seed
const unsigned long maxshort=65536L;
const unsigned long multiplier=1194211693L;
const unsigned long adder=12345L;

class CRandNumber
{
private:
	//private member containing current seed
	unsigned long randSeed;

public:
	//constructor. default 0 gives automatic seeding
	RandomNumber(unsigned long s=0);

	//generate random integer 0<=value<n-1
	unsigned short Random(unsigned long n);

	//generate random real number 0<=value<1.0;
	double fRandom(void);
};