Drand48 Erand48 Jrand48 Lcong48 Lrand48 Mrand48 Nrand48 Seed48 Srand48

Erand48() Function Erand48 ( Xseed() As  Integer ) 48 bit real random number in [0,1) (Linear congruential method) Purpose Generates 48 bit real random number in [0,1) by linear congruential method. Returns Double Generated 48 bit real random number in [0,1). Parameters [in,out] Xseed() Array Xseed(2) [in] 48-bit (16-bit x 3) seed. [out] Updated 48-bit (16-bit x 3) seed. Example Program Generate 10 real pseudo random numbers in [0, 1). Same random number series are generated by Drand48 initialized by Seed48 and Erand48 with the same seed value in Xseed(). Sub Ex_Erand48() Dim XSeed(2) As Integer, Seed As Long, I As Integer Seed = 13 XSeed(0) = &H330E: XSeed(1) = Seed Mod (2 ^ 16): XSeed(2) = Seed / (2 ^ 16) Call Seed48(XSeed()) Debug.Print "Drand48" For I = 1 To 10 Debug.Print Drand48() Next Debug.Print "Erand48" For I = 1 To 10 Debug.Print Erand48(XSeed()) Next End Sub Example Results Drand48 0.49125804875894 0.909578015652613 0.696163968687085 0.922235667562695 0.42372016481848 0.593378755016587 0.1323338794958 0.45044780014458 0.269613809642042 0.820416114584759 Erand48 0.49125804875894 0.909578015652613 0.696163968687085 0.922235667562695 0.42372016481848 0.593378755016587 0.1323338794958 0.45044780014458 0.269613809642042 0.820416114584759