Re: rounding to .5
Re: rounding to .5
- Subject: Re: rounding to .5
- From: Arturo Pérez <email@hidden>
- Date: Thu, 7 Jul 2005 20:52:44 -0400
Hi Robert,
I thought that when one used setScale it did not modify the BigDecimal.
In that case, to get a truly truncated value one needed to
myVal = new BigDecimal(myVal.setScale(2, BigDecimal.ROUND_HALF_DOWN));
Or did I misunderstand the javadoc?
-arturo
On Jul 6, 2005, at 12:42 PM, Robert Walker wrote:
Glad you found a solution that works for you. However, for precise
handling of rounding you should also get familiar with the
java.math.BigDecimal class. This class has features for setting the
scale using a specified rounding mode. Plus it includes methods for
perform math on objects rather than primitives.
Examples:
BigDecimal myVal = new BigDecimal(25.125);
myVal.setScale(2, BigDecimal.ROUND_HALF_UP);
This would result in myVal having the value 25.13
BigDecimal myVal = new BigDecimal(25.125);
myVal.setScale(2, BigDecimal.ROUND_HALF_DOWN);
This would result in myVal having the value 25.12
On Jul 5, 2005, at 8:13 AM, Dev WO wrote:
Mmmm, let's say thank you Christian, this works like a charm;)
my java knowledge is improving everyday, but I started from the very
beginning;)
Thanks again.
Xavier
On Tue, 5 Jul 2005, Christian Brunschen wrote:
double rounded = Math.round(2.0 * original) / 2.0;
... that should have been
double rounded = Math.rint(2.0 * original) / 2.0;
^^^^
My apologies,
// Christian
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