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Re: difference between ~0U and ~0

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On Thursday, March 8, 2012 8:55:20 AM UTC-5, pete wrote:
> somenath wrote:
> 
> > According to my understanding ~0 is -1.
> > So I will get all bit 1 as a
> > result of ~0 in 2's complement system.
> 
> Close, but backwards.
> 
>     ~0 is all bit 1.
> 
>     So you will get -1 as a
>     result of ~0 in 2's complement system.
> 
> -- 
> pete

That's true.

1 in 8-bit format is: 0000 0001
To get neg- 1: 
1. Negate bits. 1111 1110
2. Add 1: 1111 11111

Same results regardless of the bit size.

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difference between ~0U and ~0 somenath <pal_somenath@emc.com> - 2012-03-03 20:03 -0800
  Re: difference between ~0U and ~0 Stephen Sprunk <stephen@sprunk.org> - 2012-03-03 22:55 -0600
  Re: difference between ~0U and ~0 BGB <cr88192@hotmail.com> - 2012-03-03 23:01 -0700
  Re: difference between ~0U and ~0 Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-03-04 12:50 +0000
  Re: difference between ~0U and ~0 pete <pfiland@mindspring.com> - 2012-03-08 08:55 -0500
    Re: difference between ~0U and ~0 James Piper <usenet@jamespiper.com> - 2012-03-08 06:52 -0800
      Re: difference between ~0U and ~0 pete <pfiland@mindspring.com> - 2012-03-09 17:53 -0500
        Re: difference between ~0U and ~0 Tim Rentsch <txr@alumni.caltech.edu> - 2012-03-09 15:11 -0800
          Re: difference between ~0U and ~0 pete <pfiland@mindspring.com> - 2012-03-09 18:52 -0500

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