Float, AUTO ROUNDS OFF

float a = 9999999.9f
System.out.println(String.valueOf(a));
(i.e., when the number of digits on left of decimal > 6)
gives a rounded off result as:
1.0E7
HOW CAN WE AVOID ROUNDING OFF,
& retaining the standard notation(not scientific)

the problem:
Any idea on auto ROUNDING OFF
is the number of SIGNIFICANT DIGITS in float
restricted to 8?Float numbers ARE automatically rounded off. But the rounding takes place in the binary representation, not the decimal representation. If you want to control rounding of decimal numbers, then use a BigDecimal object. It lets you control rounding in several different ways. And the accuracy of a float number is about 7 or 8 digits in decimal, yes. If you use double numbers, you will get significantly better accuracy.
would it help if I tried a JVM diff from SUN
as Jikes???No. Java is standardized. You should get the same results from all JVMs.

Similar Messages

Rounding off a float to two decimal places

I want to make a function where I shall pass a float and and integer.
The float shall have to be rounded off to a value in the integer.
Can anyone please suggest how to round off a float.
E.g.: if the float is 12.56890 and I want to round it off to 2 decimal places, then it should be 12.57.
Regards
Hawker

I didn't mention any datatypes like float, double.True, but that is what the question is about, so you weren't answering the question. For a change.
As I mentioned, that was just a mathematical steps to round of the floating point value. (Not in any programming languages point of view).False. You didn't mention that at all.
This is the code for that in java.So here you are mentioning datatypes and floats for the same piece of mathematics that you have already been told, with reasons, doesn't work in floating point.
which seems to be working fine
Seems to. What evidence do you have that the float actually got rounded? As opposed to got displayed as rounded? Which is not what the OP asked for.
And of course all that code seems to do is round 0.01 to two decimal places, which again is not what the OP asked for.
For any remaining fans of this 'technique', please explain the behaviour of the following code:
     public static void     main(String[] args)
          int     count = 0, errors = 0;
          for (double x = 0.0; x < 1; x += 0.0001)
               count++;
               double     d = x;
               int     scale = 2;
               double     factor = Math.pow(10, scale);
               d = Math.round(d*factor)/factor;
               if ((d % 0.01) != 0.0) // if 'd' really has been rounded this should be zero
                    System.out.println(d % 0.01);
                    errors++;
          System.out.println(count+" trials "+errors+" errors");
     }

Rounding off float to 2 decimal places and returning the float

I tried doing bigdecimal but it doesnt work. :
BigDecimal bd = new BigDecimal(5 * 0.0394);
          retval = bd.floatValue();
          System.out.printf(" th %f\n",retval);
I see 0.197000. I know that there are 6 places since I didnt do %.2f. However its not the printf thats important . The float I want to return must be rounded off to two decimal places.
Thanks in advance for the help,
sb

Use BigDecimal.round( MathContext mc ), where the MathContext object is set to a precision value of 3;
BigDecimal roundedBigD = myOriginalBigD.round( new MathContext( 3 ) );� {�

Limit a float value to single decimal place after round off

41.231445 is float value . How can I limit this to a single decimal place after round off?
ie; 41.2
Any help in this regard will be well appreciated with dukes.
Regards,
Anees

Also read this: [http://java.sun.com/docs/books/tutorial/i18n/format/decimalFormat.html]

How to achieve round off value in SAP?

here I have given my Query ..I need to calculate rounding off value for this query..
SELECT (CAST($[OBTN.U_Length] AS FLOAT)/CAST($[OBTN.U_Width] as FLOAT) *($[BTNT.Quantity]))

Hi Karthick,
I am not sure wheter I understood you, but are you searching for
SELECT FLOOR((CAST($[OBTN.U_Length] AS FLOAT)/CAST($[OBTN.U_Width] as FLOAT) *($[BTNT.Quantity])))
regards,
Maik

Rounding off to nearest value with formatNumber

Can I use the formatNumber tag to round my numeric value to the nearest value?
Like if it's 15.7 I would like to display 16
And if it's 15.2, I would like to display 15
I could successfully truncate by giving a patteren but Im not sure if I can round it off.
Regards,
Leena

Yes you can - the following works on JSTL 1.1 / Tomcat 5.5 :
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head><title></title></head>
<body>
Test Auto Rounding of 16.8 :
<fmt:formatNumber value="16.88" pattern="##"/>
<br/><br/>
Test Auto Rounding of 16.2 :
<fmt:formatNumber value="16.22" pattern="##"/>
</body>
</html>Message was edited by:
appy77

Problem in formula:value getting round off

Hi All,
I need to divide 2 keyfigures and fill it in one keyfigure..
What i am doing , In transformation i have 2 fields in datasource one is value and other is quantity and i am mapping these 2 fields with one keyfigure in ODS..
I am creating formula in rule in which I am dividing value by quantity (value/quantity) but when i am running DTP and loading data the value in my keyfigure is coming after rounding off... like
I have value 4,311,781.58 and quantity 16,200.000 , if i divide i should get 266.159
but in my ODS this value is coming as 266.16..
Please advise how to remove this roundoff functionality...
Regards
Shweta

Hi shweta,
You have two options in this case.
1. Go to your created key figure. After clicking on change go the tab 'Additional properties".
There you can see Decimal Places under business explorer. you can change the number of places if you know to what places you need the calculated value.
2. Go to your created key figure. After clicking on change go to the first tab Type/unit and change your data type to FLTP- Floating point number.
Hope it helps.
Thanks,
Rahul

Reading data from force gauge rounding off decimals

Hello everyone. I am new to Labview and this is my first posting on the forum. I am currently writing a program to record pull tests on crimps using a force gauge. Everything is going fairly well for it being my first project except when the data I am reading from the force gauge is rounding off the decimals. I am sure it is where I am using the absolute value and conversion functions but I am unsure the correct way I should be doing this. Thanks in advance for any advice. Also, I tried searching on this but did not come up with anything so I apologize if this is a redundant topic.

The reason you are losing your decimals is because of the data type you are using.
If you notice, your indicator is blue, indicating it is "I8" (an 8-bit integer).
Since it is an integer, by definitiion it has no decimal precision.
After you read in the data string, try converting it to SGL (single precision float, 32-bit) or DBL (double precision float, 64-bit)
Cory K

Help! Rounding off w/o formatting....

w/o using Maths class, Formatter class, DecimalFormat class, or any other class tt provides formatting...
Anyone noes how to go abt doing tt?
Thanks...

By rounding off, do you mean to something like 2 decimal places? For 2 decimal places you would do:
.01 * (long)(.5+100*value)
But beware, decimal and floating point have incompatibilities that could cause results like 12.139999999999999 instead of 12.14

Rounding off

Hello All,
I am having problems with rounding-off float values i.e. i want to convert a float point value to integer, but dont just want to drop off the decimal part, infact I want to round it off. For example, the value 28.6 should be converted to 29. How can i do this?
PLease reply as soon as possible

Hi,
http://java.sun.com/j2se/1.3/docs/api/java/lang/Math.html#round(float)
BTW-I don't think this is an Advanced Language Topics...
Good luck,
ANeto

CK-7W AUTO SWITCH OFF

Hi all, be gentle it's my first time!
Am having an issue with the CK-7W in that it will auto switch off itself and the phone in the cradle after a minute or two of the ignition being turned off.
Can this be fixed by not connecting the ignition sense cable on installation?
Have 8 of these car kits and it would be helpful if we know what to tell the installer next time round!
Cheers, L

Yes you can disconnect the blue wire & that will dissable auto turn off, it actually says in the instuction that you dont have to connect the blue wire because the kit will shut down if not connected to a phone for over 2 mins. I would only reconmend this if you have cradles in the car because if you have keep pairing and disconnecting the Bluetooth connection it will become a pain in the butt. It will only drain you battery if you connect the blue wire to a constant power source like the red wire.
Danny b
Nokia Accredited Installer
If my answers help you, give me a Kudos. Its like a pat on the back.

MacPro - External FW800 drives & auto power off

Hi, I have a new Mac Pro and am using two LaCie FW800 external drives with auto power off facility however when I power my Mac Pro down there is still power going to the FW800 ports as the drives down shut down. I am new to macs so is there any config setting to get round this issue?
Cheers
Paul

Don't believe there is but the power to the firewire port is a built in specification.
You could go to the Apple Developer site and look at their firewire SDK (there's many firewire applications, what they do I don't really know. Little too scarry for me.

Multiply floating point rounds

Why is it that when I use the Multiply function with two floating point numbers, that it rounds off the result?
I have the Format/Precision set to 3 decimals on the indicator.
The inputs are both doubles.
Using a probe before the indicator shows that the result is rounded by the mulitply function itself.
Attachments:
Multiply Rounding.vi ‏7 KB

Wes_OH wrote:
I have the Format/Precision set to 3 decimals on the indicator.
NO!
Your indicator is set to six digits of precision, thus shows only six significant digits and that's exactly what you get (324975). If you would set ot to 3 signiificant digits, it would display as (325000).
If you want to show a certain number of digits after the decimal point, you need to set the "precision type" to "Digits of Precision", not "significant digits", as you have it set now. Try it!
Also don't trust any probes or indicators, they never "round", i.e. never change the data. The displayed precision is just cosmetic and does NOT change the underlying data that is carried in the wire, which is always full precision. If you want a probe with 10 decimal digits, create a custom probe.
If you want to round, you need to do it in code.
Message Edited by altenbach on 02-05-2007 08:37 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
digits.png ‏25 KB

Issue in MODVAT Clearing Account and Rounding off of Excise.

I have one issue in MODVAT Clearing Account and Rounding off of Excise.
Example:
Material cost    100Rs.
Excise value
1. BED             10.5 Rs
2. ECes             2.1 Rs
3. HEces          1.3.Rs
At the time of GR
Material Ac Dr          100
     To GR/IR                        100
At the time of Excise Capture
We done the rounding of Excise value
RG23 A BED         11
RG23 A Eces          2
RG23 A HEces        1
   To MODVAT            14
At the time of IR . System create IR with reference of PO
GR/IR DR      100
MODVAT         13.9
    To Vendor         113.9
So here you can see that there is a difference of 0.1 in MODVAT account and hence we are crediting Vendor with the lesser amount here with 0.1 RS.
So we cannot reconcile the MODVAT Account
Less Payment to vendor by 0.1 Rs
So is there any solutions on that.
regards
Shayam
Edited by: Shayam_210 on Jan 3, 2011 7:08 AM
Edited by: Shayam_210 on Jan 3, 2011 7:09 AM

Hi,
Check the rounding setting in below:-
SPRO > Logistics - General > Tax on Goods Movements > India > Basic Settings > Maintain Company Code Settings
SPRO > General Settings > Currencies > Define rounding rules for currencies
Regards,
Gaurav

How to set Lion built-in FTP Server auto run off

Hello all.
I set FTP Server by using Rumpus Server application.
But Lion's built-in FTP Server is running on the front.
So if I try to connect my FTP Server out of my LAN, I can only connect to the built-in FTP Server despite I wanted to connect Rumpus FTP Server.
It can be solved by unload the built-in FTP Server(using sudo -s launchctl unload...) but every after rebooting I should set it because it is set to run automatically in every booting.
How can I set the auto run off?

well, the ftp server (=ftpd) takes account info from the user list for your mac. so, go to the system settings on your mac, then to users, and then just add another user with a password of your choice (tap on the little plus-sign to add a user!). this will then be a valid user for your ftp server after you restart your ftp server.
the other thing you want to do, about the home directory, is called chroot. you can set the home directory of a specific ftp-user to be another directory then the standard. for this, there are configuration directives in the configuration file in /private/etc/ftpd.conf which you have to edit by hand. so make sure what you do there.
you should read this before editing the file, this will give you a better understanding of what to put there: https://developer.apple.com/library/mac/documentation/darwin/reference/manpages/ man8/tnftpd.8.html

Float, AUTO ROUNDS OFF

Similar Messages

Maybe you are looking for