Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!lll-lcc!pyramid!batcomputer!braner From: braner@batcomputer.UUCP Newsgroups: sci.math,sci.physics,sci.crypt,sci.math.stat Subject: Re: Do you use RANDOM NUMBERS? Message-ID: <539@batcomputer.tn.cornell.edu> Date: Fri, 27-Mar-87 15:49:28 EST Article-I.D.: batcompu.539 Posted: Fri Mar 27 15:49:28 1987 Date-Received: Sat, 28-Mar-87 16:19:59 EST References: <5712@reed.UUCP> <464@batcomputer.tn.cornell.edu> <444@faline.UUCP> Reply-To: braner@batcomputer.UUCP (braner) Organization: Theory Center, Cornell University, Ithaca NY Lines: 15 Keywords: Random numbers, leprechauns Xref: utgpu sci.math:783 sci.physics:976 sci.crypt:262 sci.math.stat:87 Summary: Do _not_ use DES for simulations [] The book "numerical recipes" includes code for both DES and some other, much simpler but not naive, random number generators. They specifically recommend _not_ to use DES for the generation of random numbers, if you need a lot of them in a hurry. (When I need them, I need many millions!) Of course, if you have DES _hardware_... I wrote a speeded-up version of the 'ran2' routine in that book, in C. (And also some much faster routines in 68000 AL.) - Moshe Braner PS: I looked for the book by Kennedy and Gentle but didn't find it. Could somebody post the "modified shift register" method from it?