Author: Gerd Isenberg
Date: 12:31:52 02/28/06
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On February 28, 2006 at 08:04:06, Reinhard Scharnagl wrote: >On February 28, 2006 at 07:07:23, h.g.muller wrote: > >>On February 28, 2006 at 02:57:37, Reinhard Scharnagl wrote: >> >>> >>>When I had been working with a 0x88 structure I used to iterate by: >>> >>>coor = ((coor | ~0x77) + 1) & 0x77; > >Those days I missed to do the following (valid only in that context): > >((coor | ~0x77) + 1) & 0x77 == >( coor + ~0x77 + 1) & 0x77 == >(coor + (~0x77 + 1)) & 0x77 == >(coor + (-0x77) ) & 0x77 == >(coor - 0x77) & 0x77 > >what would have had the suggested form then. > >Reinhard. Oups - and i missed that you found the solution already! Sorry, Gerd
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