// random.h: random-number facilities for the CSC 270 simulation example
// -- J. Clarke, March-June 1996

// The class and its functions were renamed in January 1999.

class Random {
// Manage one stream of random numbers.
//
// The implementation of Random uses the rand48() facility, if
// it's available. The field "xsubi" is used by the rand48 functions
// to store the current state of the random-number stream.

private:
        unsigned short xsubi[3];

public:
        Random (unsigned);
        Random (void);
    // restart stream with seed S
        void setSeed (unsigned long S);
    // return a random "unprocessed" long
        long nextRaw (void);
    // return a random double between 0 and 1
        double nextDouble (void);
    // return a random long between lo and hi
    // (Yes, it really returns a long and not an int.)
        long nextInt (long lo, long hi);
};

// Restart Stream with a new random seed.
void randomize (Random *Stream);