On Monday 06 March 2006 12:37, Antal wrote: > > The Mersenne Twister Free Pascal uses is one of the best PRNGs > > known today, it just has to be used the right way. But calling it > > from several threads and "randomly" overwriting its state array is > > definitely not the right way to use it. > > I'm disappointed, because I compiled the following program (on > linux): rnd.pp > begin > Randomize; > writeln(random(394)); > end.
Again: You are using a PRNG the wrong way, Jonas already pointed that out. Randomize is supposed to be called exactly once and then never again and after then a (rather large) series of random number should be generated. The way you use it, by reinitializing a PRNG before each generation of a single random number, basically means all you get is the "entropy" of the randomizer (the system clock) and not the one of the PRNG. Well, last time I checked, the system clock is not exactly random. Vinzent. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
