From: nobu.nokada@... Date: 2003-05-20T14:13:16+09:00 Subject: Re: New version of MersenneTwister.h (fwd) Hi, At Tue, 20 May 2003 13:24:41 +0900, Robert Feldt wrote: > Since Ruby uses Mersenne Twister nowadays it might be interesting to know > about the changes (better seeding, new license and faster) that other > implementations has gone through and that would (when time permits of > course) be good to have also in Ruby's version. Please see below. Current random.c bases on MT19937ar which seems the latest according to the MT inventors' page. From that file: A C-program for MT19937, with initialization improved 2002/2/10. Coded by Takuji Nishimura and Makoto Matsumoto. This is a faster version by taking Shawn Cokus's optimization, Matthe Bellew's simplification, Isaku Wada's real version. Do you mean this? -- Nobu Nakada