Error adding large numbers

I am adding large numbers and getting the wrong result. there seems to be some rounding taking place in the sum but i am adding integers. I am using DASYLab 9.02, data is summed in the arithmetic module, example problem 331153408-31570 = 331121838 but the output is 331121824. I tried making the variable where the inputs are stored 20 digit with 10 decimals but that did not help and i also tried dividing first by 1000 and 10000 only to get different answers. is there a setting that needs to be configured differently?

Hi Tom, Thanks for the reply. I am reading a hex value in from a serial port. the number is large and when i format it as hex on one chan it is off by a small amount. there is some rounding in the LSD. i then take another reading later and calculate the delta. since i dont have the right values to begin with my difference calculation is wrong. when i read as bytes through 8 channels, i can see the ascii for each digit and that they are correctly displayed. using a formula module i can convert from ascii to decimal so that i get the decimal equivalent of the hex character then in the next formula i do the math to find the value of each hex digit in place it holds. then using a sum arithmetic module i get the final value of the large number coming in. it is correct all the way upto the aritmetic sum. i tried cutting the large hex number into two parts and then adding up the weighted parts and still have the wrong ans in the display module. i also tried dividing the halves by 1000 prior to adding them so that i was working with smaller numbers in the summation but that didnt help.
so i did the math directly in the extended portion of the variables. the numbers add up properly there but when i try to bring the correct sum back into the work sheet to display it, it is wrong again. it seems that a value around 04000000 hex is the limit. below that i get the right value displayed that was calculated in the variable field, above it there is some degree of variation. I can set the limit of cycles to a value below where the addition becomes problematic or i can export the hex to a spreadsheet, do the math there and then bring it back in but i will still have the same issue displaying the answer.
the limitation doesnt seem to be in DASYLab in general but in the Read, Formula, Constant Generator modules that read the variable back into the worksheet. it is displayed properly in the contents window

Similar Messages

Bizarre error adding Numbers in Flex 4

I'm having a bizarre error adding numbers in Flex 4. In all cases, I'm getting the correct result, but sometimes I'm getting extra precision with a 5 at the end.
For example,
If I try to add 5 and 1.56, I get 6.5600000000000005
a lot of numbers add correctly, it's just certain combinations that have the problem.
Here is a small app that demonstrates the issue:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
 xmlns:s="library://ns.adobe.com/flex/spark"
 xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
 <s:layout>
 <s:VerticalLayout/>
 </s:layout>
 <fx:Script>
 <![CDATA[
 protected function button1_clickHandler(event:MouseEvent):void
 var num1:Number = Number(number1.text);
 var num2:Number = Number(number2.text);
 var result:Number = num1 + num2;
// result = 1.56 + 5;
// result = Number(1.56) + Number(5);
 resultLabel.text = String(result);
 ]]>
 </fx:Script>
 <s:TextInput id="number1"/>
 <s:TextInput id="number2"/>
 <s:Button label="Add Values" click="button1_clickHandler(event)"/>
 <s:Label id="resultLabel"/>
</s:Application>
Any assistance would be appreciated!
Thanks!
Jon Keener
[email protected]

This question comes up all the time. It's a Fact Of life of modern microprocessors and computer languages, which implement floating-point arithmetic using binary fractions (1/2, 1/4, 1/8, etc.), not decimal fractions (1/10, 1/100, 1/1000, etc.), according to the IEEE-754 spec. Many decimal fractions, such as 1.56, cannot be exactly represented as a finite binary fraction. (Or the exact representation in binary might be finite but require more fractional digits that the spec allows.) Although your source program says "1.56", it gets compiled and executed as the IEEE-754 binary-fraction that is closest to 1.56, but it isn't exactly equal to 1.56, and then this slight error gets propogated through calculations, and the conversion back to decimal is again inexact.
Generally, people just use methods like toPrecision() to round things off a bit and hide this problem. Or they go write or find a (much slower) ActionScript library that does true decimal floating-point arithmetic by storing decimal fractions rather than binary fractions.
Gordon Smith
Adobe Flex SDK Team

Large numbers calculation problem (determinant calculation)

Hello experts,
I have really interesting problem. I am calculatig determinant in ABAP with a large numbers (in CRM 5.0 system).
My formula for determinant is :
FORM calculate_determinant USING det TYPE zsppo_determinant
 CHANGING value TYPE f .
value =
 ( 1 * det-a11 * det-a22 * det-a33 * det-a44 ) + ( -1 * det-a11 * det-a22 * det-a34 * det-a43 ) +
 ( -1 * det-a11 * det-a23 * det-a32 * det-a44 ) + ( 1 * det-a11 * det-a23 * det-a34 * det-a42 ) +
 ( -1 * det-a11 * det-a24 * det-a33 * det-a42 ) + ( 1 * det-a11 * det-a24 * det-a32 * det-a43 ) +
 ( -1 * det-a12 * det-a21 * det-a33 * det-a44 ) + ( 1 * det-a12 * det-a21 * det-a34 * det-a43 ) +
 ( 1 * det-a12 * det-a23 * det-a31 * det-a44 ) + ( -1 * det-a12 * det-a23 * det-a34 * det-a41 ) +
 ( -1 * det-a12 * det-a24 * det-a31 * det-a43 ) + ( 1 * det-a12 * det-a24 * det-a33 * det-a41 ) +
 ( 1 * det-a13 * det-a21 * det-a32 * det-a44 ) + ( -1 * det-a13 * det-a21 * det-a34 * det-a42 ) +
 ( -1 * det-a13 * det-a22 * det-a31 * det-a44 ) + ( 1 * det-a13 * det-a22 * det-a34 * det-a41 ) +
 ( 1 * det-a13 * det-a24 * det-a31 * det-a42 ) + ( -1 * det-a13 * det-a24 * det-a32 * det-a41 ) +
 ( -1 * det-a14 * det-a21 * det-a32 * det-a43 ) + ( 1 * det-a14 * det-a21 * det-a33 * det-a42 ) +
 ( 1 * det-a14 * det-a22 * det-a31 * det-a43 ) + ( -1 * det-a14 * det-a22 * det-a33 * det-a41 ) +
 ( -1 * det-a14 * det-a23 * det-a31 * det-a42 ) + ( 1 * det-a14 * det-a23 * det-a32 * det-a41 )
ENDFORM.
Det values are also f type. Problem is, that for several numbers I got the right values and for another det values I got wrong values... I also try to retype variable value on type p, but without success. Maybe I used wrong types or there is some ABAP rounding of numbers which cause wrong result.
Any good ideas of solutions. <text removed>. Thanks for your time.
Edited by: Matt on Sep 14, 2010 9:17 AM

Hi Lubos,
phew! that sounds far from SAP scope, but from Maths' numerical methods. Let's see if I can remember something about my lessons at University...
- One issue can arise when adding and subtracting terms which are very similar, because the error tends to arise quite fast. Try to add the positive terms on one hand, and the negative terms on the other hand, then subtract one from the other.
- Please take into account that the determinant value can be significantly close to zero when the condition number of the matrix is low, that is, when the range is 4 but the whole determinant is close to 0. Instead, try a [Singular Value Decomposition|http://en.wikipedia.org/wiki/SVD_(mathematics)] or an [LU decomposition|http://en.wikipedia.org/wiki/LU_decomposition]
I hope this helps. Kind regards,
Alvaro

Business Partner records with large numbers of addresses -- Move-in issue

Friends,
Our recent CCS implementation (ECC6.0ehp3 & CRM2007) included the creation of some Business Partner records with large numbers of addresses. Most of these are associated with housing authorities, large developers and large apartment complex owners. Some of the Business Partners have over 1000 address records and one particular BP has over 6000 addresses that were migrated from our Legacy System. We are experiencing very long run times to try to execute move in's and move out's due to the system reading the volume of addresses attached to the Business Partner. In many cases, the system simply times out before it can execute the transaction. SAP's suggestion is that we run a BAPI to cleanse the addresses and also to implement a BADI to prevent the creation of excess addresses.
Two questions surrounding the implementation of this code. Will the BAPI to cleanse the addresses, wipe out all address records except for the standard address? That presents an issue to ensure that the standard address on the BP record is the correct address that we will have identified as the proper mailing address. Second question is around the BADI to prevent the creation of excess addresses. It looks like this BADI is going to prevent the move in address from updating the standard address on the BP record which in the vast majority of cases is exactly what we would want.
Does anyone have any experience with this situation of excess BP addresses and how did you handle the manipulation and cleansing of the data and how do you maintain it going forward?
Our solution is ECC6.0Ehp3 with CRM2007...latest patch level
Specifically, SAP suggested we apply/review these notes:
Note 1249787 - Performance problem during move-in with huge addresses
**applied this ....did not help
Note 861528 - Performance in move-in for partner w/ large no of addresses
**older ISU4.7 note
Directly from our SAP message:
use the function module
BAPI_BUPA_ADDRESS_REMOVE or run BAPI_ISUPARTNER_CHANGE to delete
unnecessary business partner addresses.
Use BAdI ISU_MOVEIN_CUSTOMIZE to avoid the creation of unnecessary
business partner addresses (cf. note 706686) in the future for that
business partner.
Note 706686 - Move-in: Avoid unnecessary business partner addresses
Does anyone have any suggestions and have you used above notes/FMs to resolve something like this?
Thanks,
Nick

Nick:
One thing to understand is that the badi and bapi are just the tools or mechanisms that will enable you to fix this situation. You or your development team will need to define the rules under which these tools are used. Lets take them one at a time.
BAPI - the bapi for business partner address maintenance. It would seem that you need to create a program which first read the partners and the addresses assigned to them and then compares these addresses to each other to find duplicate addresses. These duplicates then can be removed provided they are not used elsewhere in the system (i.e. contract account).
BADI - the badi for business partner address maintenance. Here you would need to identify the particular scenarios where addresses should not be copied. I would expect that most move-ins would meet the criteria of adding the address and changing the standard address. But for some, i.e. landlords or housing complexes, you might not add an address because it already exists for the business partner, and you might not change the standard address because those accounts do not fall under that scenario. This will take some thinking and design to ensure that the address add/change functions are executed under the right circumstances.
regards,
bill.

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Hi there,
I am currently doing a school assignment and not looking for answers but just a little guidance.
I am working with large numbers and the modulo operator.
I might have some numbers such as :
int n = 221;
int e = 5;
int d = 77;
int message = 84;
int en = (int) (Math.pow(message, e) % n);
int dn = (int) (Math.pow(en, d) % n);Would there be a better way to do this kind of calculation. The dn value should come out the same as message. But I always get something different and I think I might be losing something in the fact that an int can only hold smaller values.

EJP wrote:
It might make sense in some contexts to have a positive and negative infinity.
Yes, perhaps that's a better name. Guess I was harking back to old COBOL days :-).(*)
But the reason these things exist in FP is because the hardware can actually deliver them. That rationale doesn't apply to BIgInteger.Actually, it does. All I'm talking about is a value that compares higher or lower than any other. That could be done either by a special internal sign value (my slight preference) or by simply adding code to compareTo(), equals() and hashCode() methods that takes the two constants into account (as they already do with ZERO and ONE).
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Edited by: YoungWinston on Mar 22, 2011 9:07 AM
(*) Actually, '±infinity' tends to suggest a valid arithmetic value, and I wasn't thinking of changing existing BigInteger/BigDecimal maths (except perhaps to throw an exception if either value is involved).

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status 56 : External segment name E2KOMG003 cannot be interpreted
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Thanks,
Chilanka

Hi,
>>>>I have created partenr profile in R/3.Need I create a partner profile in XI for R/3 system?
no you cannot create any partner profiles in XI
for more about IDOC configuration in XI check :
<a href="/people/michal.krawczyk2/blog/2006/10/11/xi-new-book-mastering-idoc-business-scenarios-with-sap-xi">Mastering IDoc Business Scenarios with SAP XI</a>
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Hi All,
I am getting error in 56 - IDoc with errors added in receiver System.
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Hi all thanks for reply .
All are the help full answer ,
I use T-code WE19 and change partner profile and execute now it is fine.
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Please add the ability to add multiple folders to the assets folder in order to better organize large numbers of files.

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Hello KDLadage
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When I try to add a child form to more than one form, I get the following error:
Error Keyword: SDK.ADDFKCON
Description: Error Adding Foreign Key/Constraint.
Remedy:
Action: F
Severity: H
Help URL:
Detail:
The following is the log trace:
ERROR,23 nov 2011 17:22:42,050,[XELLERATE.ADAPTERS],Event: SDH Drop Foreign Constraint has encountered an error.
ERROR,23 nov 2011 17:22:54,519,[XELLERATE.DATABASE],ALTER TABLE UD_TICKET3 ADD (UD_ADUSER_KEY NUMBER(19) CONSTRAINT NN_UD_TICKET3_UD_ADUSER_KEY NOT NULL, CONSTRAINT FK_UD_TICKET3_UD_ADUSER FOREIGN KEY(UD_ADUSER_KEY) REFERENCES UD_ADUSER(UD_ADUSER_KEY))
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     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
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     at oracle.jdbc.driver.OracleStatement.executeUpdateInternal(OracleStatement.java:1772)
     at oracle.jdbc.driver.OracleStatement.executeUpdate(OracleStatement.java:1741)
     at com.thortech.xl.util.JDBCUtils.executeUpdate(Unknown Source)
     at com.thortech.xl.dataaccess.tcDataBase.writeStatement(Unknown Source)
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     at com.thortech.xl.client.events.tcSDHAddForeignConstraint.implementation(Unknown Source)
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     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
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     at com.evermind.server.ejb.interceptor.system.SecurityRoleInterceptor.invoke(SecurityRoleInterceptor.java:47)
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     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
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     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
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ERROR,23 nov 2011 17:22:54,519,[XELLERATE.DATABASE],Class/Method: tcDataBase/writeStatement encounter some problems: ORA-01758: table must be empty to add mandatory (NOT NULL) column
java.sql.SQLException: ORA-01758: table must be empty to add mandatory (NOT NULL) column
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
     at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:745)
     at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:210)
     at oracle.jdbc.driver.T4CStatement.executeForRows(T4CStatement.java:961)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1285)
     at oracle.jdbc.driver.OracleStatement.executeUpdateInternal(OracleStatement.java:1772)
     at oracle.jdbc.driver.OracleStatement.executeUpdate(OracleStatement.java:1741)
     at com.thortech.xl.util.JDBCUtils.executeUpdate(Unknown Source)
     at com.thortech.xl.dataaccess.tcDataBase.writeStatement(Unknown Source)
     at com.thortech.xl.dataobj.tcDataBase.writeStatement(Unknown Source)
     at com.thortech.xl.client.events.tcSDHAddForeignConstraint.createColumns(Unknown Source)
     at com.thortech.xl.client.events.tcSDHAddForeignConstraint.implementation(Unknown Source)
     at com.thortech.xl.client.events.tcBaseEvent.run(Unknown Source)
     at com.thortech.xl.dataobj.tcDataObj.runEvent(Unknown Source)
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     at com.thortech.xl.dataobj.tcDataObj.insert(Unknown Source)
     at com.thortech.xl.dataobj.tcDataObj.save(Unknown Source)
     at com.thortech.xl.dataobj.tcTableDataObj.save(Unknown Source)
     at com.thortech.xl.ejb.databeansimpl.tcDataObjectBase.save(Unknown Source)
     at com.thortech.xl.ejb.databeansimpl.tcSDHBean.save(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
     at com.evermind.server.ejb.interceptor.system.TxRequiredInterceptor.invoke(TxRequiredInterceptor.java:50)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
     at com.evermind.server.ejb.interceptor.system.SecurityRoleInterceptor.invoke(SecurityRoleInterceptor.java:47)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
     at com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
     at com.evermind.server.ejb.StatefulSessionEJBObject.OC4J_invokeMethod(StatefulSessionEJBObject.java:844)
     at tcSDH_RemoteProxy_6ocop18.save(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:53)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
ERROR,23 nov 2011 17:22:54,519,[XELLERATE.ADAPTERS],Event: Adding Foreign Constraint has encountered an error.
How to correct this?
Thank you!

899043 wrote:
Thanks for your reply!
I have a form named UD_TICKET3. This form contains information about the ticket number and a comment about any action taken on a resource of identity. We want to add this form as a child of all the resources forms. The problem occurs when I try to add the child form to the second form.You cannot add same detail table (child form) to more than one master table (resource form).

Error bars in Numbers for iPad?

Greetings,
One of the reasons I purchased an iPad was to work on the go. For me this means being able to create/edit docs, spreadsheets, and presentations in my iPad and then sync that work with my MBP at work.
I am finding some roadblocks when sharing work between devices (a first for me with Apple).
This specific question has to do with Numbers for the iPad:
- Is there a way to add error bars within Numbers for the iPad?
When I try to import a spreadsheet from Numbers in my computer the error bars get cropped as if they were some unnecessarily fancy font that didn't make it to the iPad version of the software. If there is no way to do this, does anyone know if there are plans to add this capability to the program?
I might be biased, but I have a hard time coming up with occasions when one would not need to add a measure of variability (error bar) to any graphic dispplay of data (save for ninth grade presentations maybe).
Thank you for your assistance!
Andres

Hi Andres,
iWork for iOS applications are in version 1, and in general provide a subset of the features of the Mac OS versions. Few of the users in this (Numbers) community are familiar with the iPad version, which probably explains the lack of response to yur question in the nine hours since you posted.
I expect you'll get a quicker (and more useful) response if you repost in the iWork for iOS area: https://discussions.apple.com/community/app_store/iwork_for_ios?view=discussions
Regards,
Barry

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