Actually, CACM had an article on random number generators a few months back (Nov or Dec) and gives the pseudocode for some statistically PROVEN random generators. -- Ray Tigg | Cognos Incorporated | P.O. Box 9707 (613) 738-1440 x5013 | 3755 Riverside Dr. UUCP: uunet!mitel!sce!cognos!rayt | Ottawa, Ontario CANADA K1G 3Z4