home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!mcsun!uknet!warwick!cam-cl!cam-cl!nmm
- From: nmm@cl.cam.ac.uk (Nick Maclaren)
- Newsgroups: sci.math.stat
- Subject: Re: random number generator
- Keywords: pseudo-random, C , uniform, normal
- Message-ID: <1992Jul27.124120.29511@cl.cam.ac.uk>
- Date: 27 Jul 92 12:41:20 GMT
- References: <1992Jul27.103659.11820@kth.se>
- Sender: news@cl.cam.ac.uk (The news facility)
- Reply-To: nmm@cl.cam.ac.uk (Nick Maclaren)
- Organization: U of Cambridge Computer Lab, UK
- Lines: 25
-
- In article <1992Jul27.103659.11820@kth.se>, md87-mpe@hemul.nada.kth.se
- (Magnus Pettersson) writes:
-
- |> .... There is also a description on how to make two independent and
- |> U(0,1)-distributed random numbers into two independent N(0,1)-distributed
- |> randomnumbers, with a method called "the Box-Mueller Method". That method is
- |> first described in
- |>
- |> 3. G.E.P.Box and M.E.Mueller
- |> A Note on the Generation of Random Normal Deviates
- |> Ann.Math.Stat. (1958) 29, 610-611
-
- Don't use this method in single precision - it has a very serious
- flaw. While it is OK in double precision, there are faster and simpler
- methods available (e.g. the Polar Method as described in Knuth). The
- reference for the flaw is by H.R. Neave round about 1970.
-
-
- Nick Maclaren
- University of Cambridge Computer Laboratory,
- New Museums Site, Pembroke Street,
- Cambridge CB2 3QG, England.
- Email: nmm@cl.cam.ac.uk
- Tel.: +44 223 334761
- Fax: +44 223 334679
-