| Subject | Re: [PATCH 01/16] math128: Introduce various 128bit primitives | From | Peter Zijlstra <> | Date | Fri, 26 Oct 2012 14:56:44 +0200 |
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On Fri, 2012-10-26 at 12:44 +0200, Peter Zijlstra wrote: > > We can still have the user space interface handing in the information > > in nsec resolution, but it's reasonable to scale it down to something > > useful. Just shift the incoming information right by 10, so you're in > > the 1us resolution for all the internal math and all your limitation > > problems are gone. A shift by ten for converting back and forth to > > nsecs is not a real performance issue. > > I'm fine with that.. all I wanted was to not have the undefined overflow > we initially had.
Note that we still need the constraint checking with this, although with both values shifted right 10 bits the range is now much bigger and shouldn't be a practical limit anymore.
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