On Tue, Feb 04, 2003 at 15:23:28 +0100, Dag-Erling Smorgrav wrote: > "Andrey A. Chernov" <[EMAIL PROTECTED]> writes: > > On Tue, Feb 04, 2003 at 14:43:57 +0100, Dag-Erling Smorgrav wrote: > > > All that being said, adding 1 to *ctx before returning it (see patch) > > > adresses both of your objections: a seed of 0 will not cause the LCG > > > to get stuck, and the result of rand() will range between 0 and > > > RAND_MAX inclusive. > > Adding +1 you break algorithm formulae badly from math point of view, > > something else then given formulae not allowed here. You can change 'a' > > parameter to anything you want, but not add something at the end. > > Do the math - adding 1 after the modulo operation is equivalent to > setting a == k.
Repeated k may affect distribution. Better variant will be with a != k. -- Andrey A. Chernov http://ache.pp.ru/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
