It is between 25 and 30 when the issue manifested, as I remember it correctly
reporting a value of 28 days prior to this. :)

Thanks!
Ian

Le_Forgeron <lef### [at] freefr> wrote:
> Le 10/03/2014 02:32, [GDS|Entropy] a écrit :
> > Pov thinks that a scene I have been rendering for around 30 days has actually
> > been rendering for about 12 million years.
> >
> > Ian
> >
>
> Could it be tied to the 49+ days rollover on windows ?
>
> Is that 30 days, or something like 25+ days ?
>
>
> For the technical minded: windows keeps the notion of time in a 32 bits
> integer, as number of milliseconds. (actually they call it a DWORD, but
> the API remains the same).
>
> After 49.7 days, that counter rollover. (and that used to crash W95 &
> W98... there was a patch for that, but the counter is still the same
> size: GetTickCount() cannot change)
>
> And after half that time, it might be interpreted as a negative value.
>
> Of course, promoting the DWORD into a 64 bits value is to be interesting
> if the receiver is signed.
>
> 2^62 is about 146 megayears, 11 megayears would be between 2^58 and
> 2^59... maybe some x1000 is applied to get a number of microseconds
> before converting back to years.
>
> --
> Just because nobody complains does not mean all parachutes are perfect.

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