December 19, 2005

Welcome to my new blog!

Posted in Category: Tech — Amr Awadallah @ 4:27 pm | link | | comment (0)
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I am moving my blog from yahoo 360 to yahoo web hosting since it now offers nice integration with Word Press. The 360 blog is really ok for beginner users. I decided to move for the following reasons:

  1. I wanted to add content-match ads from YPN (which I have in the new blog)
  2. I wanted to get stats on visitors, referrals, etc.
  3. I wanted pagerank/webrank scores to be shared with my main domain (awadallah.com)
  4. I wanted to post more than one photo per blog entry, and add video too.
  5. I wanted to easily spell check my posts.

Going forward you can reach my blog postings here, and the RSS2 feed is at:

http://www.awadallah.com/blog/?feed=rss2

My old 360 blog is at:

http://blog.360.yahoo.com/amr

— amr

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December 17, 2005

Funny Google rounding error …

Posted in Category: Work — Amr Awadallah @ 4:24 am | link | | comment (0)
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Try this search on Google: 1 – 0.9 – 0.1

the answer they give is: 1 – 0.9 – 0.1 = -2.77555756 × 10-17

of course the right answer is zero, which is what Yahoo Search gives:

1 – 0.9 – 0.1 = 0

to illustrate the problem with Google rounding:

1 / ((1 – 0.9 – 0.1) * (10^17)) = -0.36028797

when the right answer should be infinity, however yahoo gives this same wrong answer too:

1/((1 – 0.9 – 0.1) * (10^17)) = -0.3602879702

— amr

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