Dear forum, I want to generate pseudorandom sequences that are the same for 32- & 64-bit J. I need better statistical properties than the old linear congruential generator as in 'roll' & 'deal' at http://www.jsoftware.com/help/release/random.htm .
I could implement the 32-bit MT19937 'by hand' in J via the pseudocode at http://en.wikipedia.org/wiki/Mersenne_twister but prefer if possible not to reinvent the wheel. Is it possible (for example) to convert the output from 128!:4 in J64 to what it would have been from the same seeds in J32, for any of the current PRNGs? Many thanks for any suggestions -- Ewart Shaw -- J.E.H.Shaw [Ewart Shaw] [email protected] TEL: +44 2476 523069 Department of Statistics, University of Warwick, Coventry CV4 7AL, UK http://www.warwick.ac.uk/statsdept http://www.facebook.com/ewart.shaw 3 ((4&({*.(=+/))++/=3:)@([:,/0&,^:(i.3)@|:"2^:2))&.>@]^:(i.@[) <#:3 6 2 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
