[vtkusers] Moving an actor, after about 1.5 hours.

[Sean McBride]

On Wed, 9 Mar 2016 14:58:53 -0700, David Gobbi said:

>To say "all bets are off" is ludicrous.

Alas, not really.

>Compilers everywhere use two's
>complement arithmetic where there is no difference (at the bit level)
>between signed and unsigned addition.

*CPUs* use 2's complement, true, but irrelevent.

Compilers these days do evil/surprising optimizations, ex:

<http://kristerw.blogspot.ca/2016/02/how-undefined-signed-overflow-enables.html>
<http://www.airs.com/blog/archives/120>

But this is getting off-topic...

VTK obviously needs to up that thing to 64 bit for all platforms.

Cheers,

-- 
____________________________________________________________
Sean McBride, B. Eng                 sean at rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada