[erlang-questions] In Erlang , {1.1*1.1.} show me the answer is 1.2100000000000002, why?

[Thomas Lindgren]

Eric, it might be useful to read this: 
CiteSeerX — What Every Computer Scientist Should Know About Floating Point Arithmetic

I know I liked it.
Best,Thomas 

     On Sunday, October 26, 2014 9:35 AM, 张栋 <zd2559@REDACTED> wrote:
   
 

 Hello the maillist member:
I am  new in Erlang,Please Help me.

When I try some multiplication, I got the some unexpected answer about the following expression.

Please help!

List:

23> [1.1*1.1,1.1*1.2,1.1*1.3,1.1*1.4,1.1*1.5].
[1.2100000000000002,1.32,1.4300000000000002,1.54,
 1.6500000000000001]

24> [1.2*1.2,1.2*1.3,1.2*1.4,1.2*1.5,1.2*1.6].
[1.44,1.56,1.68,1.7999999999999998,1.92]

Thank you for your time.

Eric D. Zhang In China.




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