double   p_dBeta (double a,double b, unsigned int *seed);
   int      p_iBinomial (double p,int n,unsigned int *seed);
   double   p_dExponential (double lambda,unsigned int *seed);
   double   p_dGammaInt (int a,unsigned int *seed);
   double   p_dGammaGen (double A,unsigned *seed);
   int      p_iGeometric (double p,unsigned int *seed);
   double   p_dNormal (double mean,double sigma, unsigned int *seed);
   int      p_iPoisson(double mu,unsigned *seed);
   unsigned p_iUniform (unsigned *seed);
   double   p_dUniform(unsigned *seed);