Round a double value to a specific number of decimal places?

Hello,
Is there standard java function which will round a double value to a specified number of decimal places? Something like:
double d = 4.34523;
d = round(d, 2);
where d is finally assigned the value of 4.34?
Thanks!
-exits

No, because doubles hold values in binary (as do all values in a computer, of course, but there's no additional stuff to indicate decimal values).
If you want values with specific rounding rules in decimal, use java.math.BigDecimal.
If you just want to format the number with a specified number of decimal digits, use java.text.DecimalNumber.

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Need some help in Rounding a double value to a whole number

Hey Peeps,
Need some help here, I got a method that returns a value in double after a series of calculation.
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1. if the value is 62222.22222222, it rounds to 62222 and
2. if the value is 15555.555555, it rounds to 15556
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Hi Keerthi- Try this...
1. if the value is 62222.22222222, it rounds to 62222 and
double d = 62222.22222222;long l = (int)Math.round(d * 100); // truncatesd = l / 100.0;
double d = 62222.22222222;
System.out.println(d);
long l = (int)Math.round(d * 100);
// truncatesSystem.out.println(l);
d = l / 100.0;System.out.println(d);
for (int i = 0; i < 1000; i++)
{ d -= 0.1;}
for (int i = 0; i < 1000; i++)
{ d += 0.1;}System.out.println(d);
regards- Julie Bunavicz
Output:
62222.22222222
62222
62222.22
62222.22000000000001

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does round( $someDouble ) not work?
Can you please try a few things yourself before posting?
If you already have, can you please post what you have tried?

Altering number of decimal places of formatted number

Using http://java.sun.com/docs/books/tutorial/i18n/format/numberFormat.html I have worked out how to format a number, almost. When I follow the example in this tutorial that shows how format a double, it always rounds it to 3 decimal places. How do I alter the number of decimal places that this formatting procedure outputs? I used the US as the locale and English as the language. I am assuming that if these parameters are chosen, 3 decimal places is the output. Is this assumption correct?

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Any solution?

Please [don't cross-post!|http://stackoverflow.com/questions/2296110/determine-number-of-decimal-place-using-bigdecimal], it's considered rude. If you must do it, then at least link each post so that people can find out which answers you've already got in order to avoid duplicate work on our part.
Please read [_How To Ask Questions The Smart Way_|http://www.catb.org/~esr/faqs/smart-questions.html].

Can not change the number of decimal places in the normalization of result

dear all
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Calculate single values as normalization of result, and then it display 33.333%, i like to display only two number of decimal places, so i set the number of decimal places as 0.00, but i doesn't work, it still display three decimal numbers.
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hi,thanks for your advice, but that doesn't suit for my problem.
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Get the field as SPFieldNumber and then check DisplayFormat which returns
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Yielding the desired number of decimal places using the AVG function in t-sql

Hello again. Confused retired hobby coder having trouble setting up a scalar-valued function to return the desired number of decimal places from a AVG query.
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You've not specified precision and scale in UDF return type. So you're leaving it to server to interpret it based on default settings
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AS
Please Mark This As Answer if it solved your issue
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Visakh
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Bex: overall Result: number of decimal places

Good day
How to I change the number of decimal places for the "Overall result" in a query?
Your assistance is appreciated.
Cj Faurie

Thanks for your response.
The number format in properties for the KF (formula created in query) has been set to '0' decimal places. I also use the "Average of all values <>0" in the calculate results for the KF. If you use "Summation" then the decimal will apply, but not with the "Average .....".
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BEx Analyzer displays wrong number of decimal places after implementing BW patch

Hey folks,
we patched our BW 7.31 from PL10 to PL15 last weekend and now we got some issue with the number of decimal places shown in BEx Analyzer 7.x.
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Hi Andreas,
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Hi
I think its a program error, you need to Implement the source code corrections.
Please refer SAP Note : 855670
Regards,
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Reward if it helps.

How to set the number of decimal places.

Just wondering what and where the code would be to set the number of decimal places when calculating an answer.

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This is not so good for financial applications where they want the total of 10 transactions to match the total of each number displayed but can be kind of important for scientific ones.
eg
someNumber.ToString("N3"));
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Rounding a double value

What is the easiest way to round a Double variable to 2 significant figures?
Cheers Mike

Oh, classical and very typical question on this forum.
The short answer is nope. You don't do that and you don't need to do that. If you really really have to must doing that, you used the wrong type - double.
By definition, double is an approximation. No gurantee on precision lose.
--lichu

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round_f_to_15_decs round variable of type f to 15 decimals
Sometimes type F (float) is used to represent exact data (Amounts, Quantities):
if values are to big to be represented as Packed (> 31 decimals)
to significally improve performance of calculations, e.g. in statistical reports
G_DECIMAL_PLACES_GET
REPORT Z_ROUNDING .
DATA: float TYPE f,
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CLASS cl_abap_math DEFINITION LOAD.
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 / 'Amount:', amount.
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WRITE: / '==== Correct Processing:',
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12.12.24.1.13
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Got it!
I tried opening it in TextEdit but the funky dates were omitted from the page. Then I opened it in LibreOffice and it looked OK. The problematic dates seemed created by a special Word function. The behaving dates were manually written.
I selected all content of the document in LibreOffice and pasted into a Pages document and all dates came out as they should.

Round a double value to a specific number of decimal places?

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