Re: Losing precision when converting to double

Mikael Bergforsen wrote:
> Whenever the result of an operation is a double I loose precision; here
> are some examples:
>
> double a = 1111.111111111;  //a = 1111.1111111109999 OK
>
> converting from decimal
> double a = Convert.ToDouble(1111.111111111M); //a = 1111.111083984375 NOT
> OK
 >
> result of addition
> double a = 1111.111111111;
> double b = 1111.111111111;
> double c = a + b; //c = 2222.22216796875 NOT OK
> double c = 2222.222222222; // c = 2222.2222222219998 OK
>
> Any idea why this happens?

Please read http://www.pobox.com/~skeet/csharp/floatingpoint.html

Jon

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