Re: double with precision

On Wed, 27 Jun 2007 23:25:16 +0100, Roy Gourgi <royng@xxxxxxxxxxxx> wrote:

Thanks Eric,

Just out of curiosity why can't the number 1.74 be represented exactly with
a double?

http://www2.hursley.ibm.com/decimal/decifaq1.html#inexact

The solution, in Java, is to use BigDecimal (http://java.sun.com/j2se/1.5.0/docs/api/java/math/BigDecimal.html) instead of double, but that can make your code quite clunky. An alternative is to multiply all of your values by 100 so that you are never dealing with fractions (except when you convert them for display).

Dan.

--
Daniel Dyer
http//www.uncommons.org
.

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