Author mark.dickinson
Recipients christian.heimes, gregsmith, loewis, mark.dickinson, pitrou, rhettinger, sopoforic, tim.peters
Date 2009-10-24.19:25:40
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Message-id <1256412342.43.0.0207027571859.issue1087418@psf.upfronthosting.co.za>
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> Most operations are add and subtract, and in each such operation you
> need to look at both signs, and decide if you want to really add or
> subtract, and if you are subtracting, you then have to do a magnitude
> test to see which way - all of that before you do any actual
> computation. That's a lot of overhead for e.g. 'i -= 1'.

Hmm.  I agree this isn't ideal, and I now see the attraction of
two's complement.  Thanks.

It would be interesting to see timings from such an approach.
Maybe one could just implement the basic operations (+, -, *, /)
to get an idea of whether it's worth considering more seriously.
History
Date User Action Args
2009-10-24 19:25:43mark.dickinsonsetrecipients: + mark.dickinson, tim.peters, loewis, gregsmith, rhettinger, pitrou, christian.heimes, sopoforic
2009-10-24 19:25:42mark.dickinsonsetmessageid: <1256412342.43.0.0207027571859.issue1087418@psf.upfronthosting.co.za>
2009-10-24 19:25:41mark.dickinsonlinkissue1087418 messages
2009-10-24 19:25:40mark.dickinsoncreate