//========================================================
// Class Random provides class methods for generating
// pseudo-random numbers.  It is based on the random
// function in the C standard library.
//
// The methods are as follows.
//
// Random::setseed(n)   Initialize the random number generator.
//                      Use this ONCE at the beginning.
//
// Random::uniformRandom() Return a real number that is uniformly
//                         distributed between 0 and 1.
//
// Random::uniformRandom(m) Return a real number that is uniformly
//                          distributed between 0 and 2m.  Its mean
//                          is m.
//
// Random::exponentialRandom(m) Return a real number that is exponentially
//                              distributed (between 0 and infinity) with
//                              a mean of m.

class Random
{
public:
  static void   setseed(int seed);
  static double uniformRandom();
  static double uniformRandom(double mean);
  static double exponentialRandom(double mean);
};