Hi I'm using GSL for an application where it's fairly important to be able to produce consistent sets of random numbers on subsequent runs. I've been using Jochen Voss's add-on to generate gaussian distributed numbers with the Ziggurat algorithm. I'm currently in the process of upgrading to gsl-1.8, in which I'm happy to see the Ziggurat routine has now been incorporated. However I notice that the included version has been altered slightly so that it produces a different stream of numbers from the add-in version when run with the same RNG algorithm and the same starting seed.
Furthermore, it seems to me that the version in gsl-1.8 will be slower than the add-in version for RNG algorithms that can return a max value of 2^32-1, like the mt19937 algorithm which I'm using, since it will make two calls to the RNG rather than a single call in the add-in. If possible I'd like to get an explanation for these changes since unless they're fixing an error in the original implementation I'd rather not introduce changes into my application. Kind regards Richard Gould NOTICE The information contained in this email is confidential. If you are not the intended recipient, you must not disclose or use the information in this email in any way. If you received it in error, please tell us immediately by return email and delete the document. We do not guarantee the integrity of any e-mails or attached files and are not responsible for any changes made to them by any other person. _______________________________________________ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl
