Re: 3.0.1 release?

[Marco Atzeri]

--- Michael Goffioul ha scritto:

> On Tue, Apr 8, 2008 at 4:41 PM, David Bateman
> < wrote:
> >  Then I'm not sure I understand, it is clear that
> the example
> >
> >
> >   Bmax = bitmax;
> >   A = bitshift(Bmax,-2);
> >   bitxor(cast(A,'uint64'),cast(Bmax,'uint64'))
> >
> >
> >  Is incorrect in the windows version (I used your
> 3.0 MSVC binary) of
> >  Octave, and that corresponds to the piece of code
> I sent.. Can you
> >  confirm that this is incorrect under MSVC (that
> is it doesn't return
> >  6755399441055744). I checked the casts above
> independently and they are
> >  returning the correct answers, so the issue is in
> int main (void)
> {
>         uint64_t a =
> 0x001FFFFFFFFFFFFFUL^0x0007FFFFFFFFFFFFUL;
>       std::cerr << 0x001FFFFFFFFFFFFFUL << std::endl;
>       std::cerr << 0x0007FFFFFFFFFFFFUL << std::endl;
>         std::cerr << a  << std::endl;
>         return 0;
> }
> 
> When executed, it gives:
> 
> 9007199254740991
> 2251799813685247
> 6755399441055744
> 
> Then I executed the following in octave:
> 
> Bmax = bitmax;
> A = bitshift(Bmax,-2);
> cast(Bmax,'uint64'), cast(A,'uint64'),
> bitxor(cast(A,'uint64'),cast(Bmax,'uint64'))
> 
> which returned
> 
> ans = 9007199254740992
> ans = 2251799813685247
> ans = 11258999068426239
> 
> Notice the 1-bit difference in the first entry. If
> I'm right, they
> should be equivalent,
> right?
> 
> Michael.
> 

FYI 
on cygwin the result is:

 9007199254740991
 2251799813685247
 6755399441055744

Regards
Marco


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