Re: Decimal rounding of a float data type in Java.

I agree completely.  Both this suggestion and the user of DecimalFormat are
much better choices than my initial suggestion.

Regards,

Richard D. Dettinger
AS/400 Java Data Access Team

"Biologists have a special word for stability -- dead"

                Larry Wall
                Open Source Developers Journal
                Issue 1, Jan  2000


Gary L Peskin <garyp@firstech.com>@midrange.com on 03/01/2001 08:57:53 AM

Please respond to JAVA400-L@midrange.com

Sent by:  owner-java400-l@midrange.com


To:   JAVA400-L@midrange.com
cc:
Subject:  Re: Decimal rounding of a float data type in Java.



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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