[Bug 121421] rand() behaves poorly on some platforms

[bugzilla]

https://issues.apache.org/ooo/show_bug.cgi?id=121421

--- Comment #25 from orcmid <orc...@apache.org> ---
(In reply to comment #24)
> Created attachment 79978 [details]
> Rough implementation (WIP)
> 
> Still more cleanups.

For the initialization, you can try something like this:

long SimpleSeeder(long prev)
     { return (((69069L * prev) & 0x3FFFFFFF) | 1;
       /* not all that random but nonzero and less than
          the moduli, all up near 0x7FFFFFFF */
     }

  ix = SimpleSeeder((long) time());
  iy = SimpleSeeder(ix);
  iz = SimpleSeeder(iy);
  it = SimpleSeeder(iz);

Not sure how you need to fit this into an initialization of static variables.

I looked around for better initial generators and gave up for now.  This hack
should work for a while.

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