randnumber.h

数值计算c++源代码,包括各种算法。很有用的。

#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);
};