The class bpgenerator

The class bpgenerator  adds just one member function to SIM's generator :

interface bpgenerator : public generator
{
public:
  bpgenerator(unsigned int seed);             // constructor
  virtual double duration(double a, distribution db = EXACT, double b = 0);
                                              // get a duration according to 
                                              // distribution
};

The member function duration returns a positive double according to the specified distribution and parameters.