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  • Subject: Re: Decimal rounding of a float data type in Java.
  • From: Gary L Peskin <garyp@xxxxxxxxxxxx>
  • Date: Thu, 01 Mar 2001 06:57:53 -0800
  • Organization: The Firstech Corporation

Richard Dettinger wrote:
> I *think* the only way that you can completely eliminate floating point
> math rounding errors is to not use floating point numbers.  Isn't this the
> original rational for database NUMERIC and DECIMAL data types?  Using
> something like java.math.BigDecimal is a pain (and a performance drain)
> but it should eliminate these kinds of problems.
> 

I'd use com.ibm.math.BigDecimal.  It's -much- faster and less buggy.  I
think it may already be included with the JDK on the 400.  I'm not sure
and can't look right now.  But, if not, it is a available at
<http://www2.hursley.ibm.com/decimalj/>.

Gary
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