PSPP-BUG: [bug #18982] Three check failures on x86-64

[John Darrington]

Follow-up Comment #5, bug #18982 (project pspp):

Forget most of what  I said previously.  Further investigation shows that the
problem is simply the my_rand subroutine which generates the cases is not as
platform invariant as it might be:

sub my_rand {
    my ($modulo) = @_;
    $next = ($next * 1103515245 + 12345) % (2**32);
    return int ($next / 65536) % $modulo;
}

If $next starts at a large value, then the multiplication leads to precision
errors on the 32 bit machines, and thus a different sequence of numbers.



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