Re: CVS commit: src/lib/libc/gen

[David Laight <david%l8s.co.uk@localhost>]

On Sat, Sep 13, 2003 at 09:29:58PM +0000, Jun-ichiro itojun Hagino wrote:
> 
> Module Name:  src
> Committed By: itojun
> Date:         Sat Sep 13 21:29:58 UTC 2003
> 
> Modified Files:
>       src/lib/libc/gen: randomid.c
> 
> Log Message:
> correct setup of ru_b and ru_a (for 32/20 bit case)

I don't think you have fixed two of the problems:

The LCG fails because:
        p->ru_a * p->ru_x + p->ru_b
exceeeds 2^32 during the multiply in the 20/32bit cases (even with ru_b small).

seed2 has to be killed because:
        p->ru_seed2 ^ p->ru_x
doesn't give a unique set of numbers modulo ru_n.

        David

-- 
David Laight: david%l8s.co.uk@localhost