Drand48Exp Drand48Exp_sub GenrandExp GenrandExp_sub InitExp RanfArrExp RanfArrExp_sub

Drand48Exp() Function Drand48Exp ( Optional Theta As  Double = 1 ) 48 bit real exponential random number (Ziggurat method) (Linear congruential method) Purpose Generates 48 bit real exponential random number. An uniform random number is generated by the random number generator Drand48() which is based on the linear congruential method. Then it is transformed to the exponential random number by Ziggurat method. Returns Double 48 bit real exponential random number. Parameters [in] Theta (Optional) The parameter θ of the exponential distribution Exp(θ). (default = 1) Note Same as using Drand48(). See Drand48() for more details. Reference Yatsuji Tetsuaki, "Probability distribution random number generation method" 2nd ed., Pleiades Publishing, 2019. (Japanese book)