Messages in this thread | | | Date | Tue, 12 Mar 2002 09:30:34 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: 2.4.19pre2aa1 |
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On Tue, 12 Mar 2002 wli@holomorphy.com wrote:
> On Tue, Mar 12, 2002 at 08:33:23AM -0500, Richard B. Johnson wrote: > > This is a simple random number generator. It takes a pointer to your > > own private long, somewhere in your code, and returns a long random > > number with a period of 0xfffd4011. I ran a program for about a > > year, trying to find a magic number that will produce a longer > > period. > > > > You could add a ldiv and return the modulus to set hash-table limits. > > ANDs are not good because, in principle, you could get many numbers > > in which all the low bits are zero. > > > > > > The advantage of this simple code is it works quickly. The disadvantages > > are, of course, its not portable and a rotation of a binary number > > is not a mathematical function, lending itself to rigorous analysis. > > Would you mind explaining what the point of this is? AFAICT this is > meaningless noise inspired by the words "/dev/random". > > > Bill > Really?
Cheers, Dick Johnson
Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).
Windows-2000/Professional isn't.
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