Math.round doesn't work

Hi everyone!
I have a problem with the Math.round function. When I code:
Math.round(undefined);
in my flash-movie, it returns the number 0!! But when I test
the same code in a new flash document it returns NaN.
So my question will sound: Why does it return 0??
/Tobias

Thanx for the answers!!
Actually, it is a variable instead of "undefined". I wrote
"undefined" because it should be easier to see the problem then.
The variable can namely be undefined sometimes. But I will do as
Jeckyl said, check before rounding!!
Thank you very much!!
/Tobias

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I have allready tested my code to the max en I have redone the calculations about 4 times, because I couldn't believe the fault was in the method atan or atan2 from sun. But since my calculations should work in theorie (worked it out with a math teacher) it's the only options I could think of.
[qoute]
I haven't looked up in the API docs how atan2 is supposed to work, but I noticed these two lines in your code:
forceAngle = atan2(dy2,dx2);//the angle of the force with the y-axis
travelAngle = atan2( (x-oldx), (y-oldy) );
In one place you use Y and X as the parameters and in the other case you use X and Y. They can't both be right.
[qoute]
In this case it is. because the forceangle is opposite the x-axis and thus the two must be reversed. (travelangle is opposite the y-axis).
I have also tried to reverse them (for both) but the effect got worse :)
Thanks anyway.

Merge 2 code and script doesn't work anymore

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change the highlighted text
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package main;
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                         mach.setStart();
                    else
                         if(mach.getStan()==1)     //running
                              mach.setPause();
          sb.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e){
                    mach.setStop();
          speed.addChangeListener(new ChangeListener(){
               public void stateChanged(ChangeEvent e){
                    int pulsy = (int)Math.pow(2,((JSlider)e.getSource()).getValue());
                    mach.setDelay((int)Math.round(1000/pulsy));
                    //loger.info("Sleep time: "+(1000/((JSlider)e.getSource()).getValue()));
          Container cp = getContentPane();
          cp.setLayout(null);
          tp.add(napisy.getParamogolne(),new MainParams(mach,napisy));
          tp.add(napisy.getCzapa(),new CapParams(mach,napisy));
          tp.add(napisy.getObliczenia(),new Obliczenia(mach,napisy));
               tp.reshape(5,0,300,250);
               prog.reshape(190,255,120,40);
               speed.reshape(190,315,120,50);
               speed.setSnapToTicks(true);
               speed.setMinorTickSpacing(1);
               speed.setPaintTicks(true);
               spb.reshape(190,375,120,25);
               sb.reshape(190,410,120,25);
               averageP.reshape(315,1,310,150);
               singleP.reshape(315,150,310,295);
               polarCap.reshape(5,255,181,191);
               TitledBorder polarCapB = BorderFactory.createTitledBorder(eb,napisy.getCzapapolarna());
               polarCap.setBorder(polarCapB);
               speed.setBorder(new TitledBorder(napisy.getPredkoscsymulacji()));
               prog.setBorder(new TitledBorder(napisy.getPostep()));
          cp.add(prog);
          cp.add(speed);
          cp.add(tp);
          cp.add(spb);
          cp.add(sb);
          cp.add(averageP);
          cp.add(singleP);
          cp.add(polarCap);
          class MojListener implements ComponentListener{
               public void componentMoved(ComponentEvent e){
                    e.getComponent().repaint();
                    singleP.repaint();
                    e.getComponent().hide();
               public void componentShown(ComponentEvent e){
               public void componentHidden(ComponentEvent e){
               public void componentResized(ComponentEvent e){
          addComponentListener(new MojListener());
     public static void main(String[] args) throws Exception{
          JApplet applet = new PSRSim();
          JFrame frame = new JFrame("PSR Simulator");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.getContentPane().add(applet);
          frame.setSize(640,480);
          applet.init();
          applet.start();
          frame.setVisible(true);
}

Math.round with checkbox for tax

I have a form that needs to calculate sales tax. If it ships to California, then tax is applied.
I have been attempting to cobble together a Boolean JavaScript in Acrobat v8 (on a Mac) using Math.round(). No luck, it always defaults to else. I have searched this forum, planetpdf, bought Padlova's Acrobat Forms book, and just have been stonewalled on this issue.
I have a series of items that SubTotal - ItemTotal.1, ItemTotal.2, ItemTotal.3 using the simplified Value is menu.
California tax is calculated with (Tax * SubTotal) * 0.0725, where Tax is a checkbox with a Mouseup value of 1. When the checkbox is active, the tax is added, otherwise the tax value is zero.
As near as I can tell looking at the State Board of Equalizations tax tables, Acrobats default rounding is displaying the correct amount of tax.
Is there any reason I shouldnt leave this as it stands, as opposed to more research into the correct syntax for Math.round() with a checkbox variable?

Interesting - but exactly the sort of thing a programmer hates. It
gives a huge table, but it doesn't give the exact rules needed to
actually write legal code.
There isn't a generic standard to use. In fact, in some states, the
rule changed. For example, in 2005, Ohio changed to "The computation
shall be carried out to three decimal places. If the result is a
fractional amount of a cent, the calculated tax shall be rounded to a
whole cent using a method that rounds up to the next cent whenever the
third decimal place is greater than four. A vendor may elect to
compute the tax due on a transaction on an item or an invoice basis."
Instead of "always rounding up in any case where the tax calculation
yielded any fractional amount over a whole cent".
But you say "rounds up". Let's test that with the table. $100 is a
good starting point. 7.75% of $100 is exactly $7.75, so no rounding is
needed. This matches the table, which says that amounts over $99.93
pay $7.75 tax. So, what about $99.93? Calculated exactly, 7.75% is
$7.744575. If this were simply rounded up, the tax would be $7.75.
This suggests it is actually rounded to the closest, and might be the
same as the new Ohio rule. Or some variation on it.
Interestingly, there is a California sales tax calculator on
http://www.csgnetwork.com/salestaxcalc.html, and it seems to match the
table. They do offer a JavaScript calculator for license, and given
that it runs to something like 60 lines of code, this may be worth
considering, as reimplementing it (without copying) sounds hard work.
Aandi Inston

Can't lower voice memo volume. My decrease button doesn't work anymore. Any other way i can lower it without disabling speaker

Own an iphone 5. Can't control voice memo volume from anywhere that deals with volume on my phone. My decrease button doesn't work. I have to listen to my voice memos on full blown volume. Can't lower it from settings or from music. Help please!

Hi,
thanks for your answer.
The Size of all disks is: 6 x 4 TB.
In the Pool are 5 x 4 TB plus 1 x Hot Spare.
It comes up to about 14,6 TB of Data formatable.
But tried it also with just 3 x 4 TB to see if it works.
I just made a Raid5EE on the controller and then used Storage Spaces with simple, all worked fine.
Here the results of my tests:
1) your command had to be modified (typoe in usemaximumsize, and had to add -ResiliencySettingName Parity.
new-virtualdisk -friendlyname testpsh -storagepoolfriendlyname test -ResiliencySettingName Parity -usemaximumsize
But anyway, my problem is not creating the virtual disk, but formatting the partition if it's parity only.
I added a screenshot:
Here you see my storage pool, and I added 3 virtual disk.
1 simple, 1 mirror, 1 parity. Only the parity cannot be formatted. The others can. No mather which size I do.
About a testserver, I added 4 x 4 TB to a VM (VHDX-files) and could do parity without problems. So it seems it is this server specific.
As it worked with another controller, I really wonder if the controller could break parity of Storage Pools?
The other weird part is, it sais "Raid" as BUS, but it's set to pass through, in details I see the serial of the attached HDD.
This is what properties shows on this volume. Always RAW.
I also tried Software Raid5 within the server.
This also worked fine. So really only parity.
Thanks
Patrick

What to do when your program doesn't work.

A huge number of posts here seem to relate to code that has been written (one presumes by the poster), but which doesn't work.
I get the impression that people don't know what to do next.
It's really not that difficult. When you're writing your program you constantly have in mind what you expect will happen as a result of each bit of code that you put.
If at the end of the day, the program as a whole doesn't behave as you expected, then somewhere in there there must be a point at which the program starts doing something that doesn't correspond to what you anticipated. So, you add some System.err.println statements to test your beliefs.
Consider this program that tests whether a number is prime.
public class Test
    public static void main(String args[])
        // Get the number to test.
        int number = Integer.parseInt(args[0]);
        // Try each possible factor.
        int factor;
        for(factor = 2; factor < number; factor++)
            // See whether it is really a factor.
            if(number / factor == 0)
                break;
        if(factor == number)
            System.out.println("Number is not prime.");
        else
            System.out.println("Number is prime.");
}Straight forward enough, but it doesn't actually work :( It seems to say that every number is not prime. (Actually, not quite true, but I didn't test it that carefully, since it didn't work).
Now, I could scrutinise it for errors, and then, having failed to find the problem, I could post it here. But let's suppose I'm too proud for that.
What might be going wrong. Well, how sure am I that I'm even managing to capture the number of interest, number. Let's put in a System.err.println() to test that.
Is the program in fact trying the factors I expect? Put in System.err.println() for that.
Is the program correctly determining whether a number is a factor? Need another System.err.prinln (or two) for that.
public class Test
    public static void main(String args[])
        // Get the number to test.
        int number = Integer.parseInt(args[0]);
        System.err.println("Number to check is " + number);
        // Try each possible factor.
        int factor;
        for(factor = 2; factor < number; factor++)
            System.err.println("Trying factor " + factor);
            // See whether it is really a factor.
            if(number / factor == 0)
                System.err.println(factor + " is a factor.");
                break;
            System.err.println(factor + " is not a factor.");
        if(factor == number)
            System.out.println("Number is not prime.");
        else
            System.out.println("Number is prime.");
}Let's try with on the number 6.
The output is:
Number to check is 6
Trying factor 2
2 is not a factor.
Trying factor 3
3 is not a factor.
Trying factor 4
4 is not a factor.
Trying factor 5
5 is not a factor.
Number is not prime.
Whoah! That's not right. Clearly, the problem is that it's not correctly deciding whether a number is a factor. Well, we know exactly where that test is done. It's this statement:
            if(number / factor == 0)Hmm.... let's try 6 / 3, 'cos 3 is a factor.
6 / 3 = 2.
But that's not zero. What the.... Oh - I see, it should have been number % factor.
Ok - let's fix that, and run it again.
Now the output is:
Number to check is 6
Trying factor 2
2 is a factor.
Number is prime.
Not the right answer, but at least it's now figured out that 2 is a factor of 6. Let's try a different number.
Number to check is 9
Trying factor 2
2 is not a factor.
Trying factor 3
3 is a factor.
Number is prime.
Again, got the right factor, but still the wrong answer. Let's try a prime:
Number to check is 7
Trying factor 2
2 is not a factor.
Trying factor 3
3 is not a factor.
Trying factor 4
4 is not a factor.
Trying factor 5
5 is not a factor.
Trying factor 6
6 is not a factor.
Number is not prime.
Aagh! Obvious - the final test is the wrong way round. Just fix that, remove that System.err.println()s and we're done.
Sylvia.

Consider this program that tests whether a number is
prime.
[attempt to divide by each integer from 2 to n-1]At risk of lowering the signal to noise ratio, I
should point out that the algorithm given is just
about the worst possible.
I know that the point was to illustrate debugging
and not good prime test algorithms, and I disagree
with the correspondent who thought the post was
condescending.
Anyway, the java libraries have good prime testing
methods based on advanced number theory research that the
non-specialist is unlikely to know. Looking at the java
libraries first is always a good idea.
Even with the naive approach, dramatic improvements
are possible.
First, only try putative divisors up to the square root
of the number. For 999997 this is about 1000 times faster.
Next only try dividing by prime numbers. This is about
7 times faster again. The snag, of course, is to find the
prime numbers up to 1000, so there might not be much
advantage unless you already have such a list. The sieve
of Erastosthenes could be used. This involves 31 passes
through an array of 1000 booleans and might allow an
improvement in speed at the expense of space.
Sorry if I've added too much noise :-)

KA780G second network card doesn't work

Hi everybody,
Today, I put an second network card on the KA780G board (it's for a round robin network), on a free PCI slot, and this card isn't recognised by Linux and Windows (in Windows XP, when the network card is connected, my graphical card works bad as well).
I tested this network card in another computer and it's working well, I try with another type of network card and it's not working.
I upgraded the BIOS with the latest release and reset the bios parameters but it doesn't work.
Do I need to put some specifics parameters in the BIOS ?
Someone as an idea ?
Thanks
Matt

As you want... but I know the truth
Transfert a file takes me twice the time when the second network card was unpluged (the test was made with two differents files with the same size, this is for keeping disk caching speeding the transfert).
I think, your're not understanding, so let me explain the achitecture of my network : two computers pluged to my "super magic switch" (each with one network card) and my NAS with two round robin's network card.
I transfert one file from the NAS to the first computer and at the same time another file from the NAS to the second computer. The network speed was (on the NAS) about 24MB/s (see with the system monitor).
If you're right explain me why many people using port trunking with their switches ?
Matt.

Compensation handler and compensate activity doesn't work

Hi!
i'm trying to build process with compensation handlers and it doesn't work .. to test it i made the following example:
in scope_1 there is simple assign_1 and in compensation handler there is assign_2. after scope_1 i throw error and in catchAll branch i have compensate activity - calling compensation of scope_1. But that compensation activity is never invoked! can please someone tell me why? what am i doing wrong?
I have bpel 10.1.2 ...
Thanks, Tomas
This is the source of my process:
<process name="pokusy" targetNamespace="http://xmlns.oracle.com/pokusy"
xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:xp20="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.Xpath20"
xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:ns4="http://xmlns.oracle.com/pcbpel/adapter/db/all_keycodes/"
xmlns:ldap="http://schemas.oracle.com/xpath/extension/ldap"
xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ns5="aa"
xmlns:bpelx="http://schemas.oracle.com/bpel/extension"
xmlns:client="http://xmlns.oracle.com/pokusy"
xmlns:ora="http://schemas.oracle.com/xpath/extension"
xmlns:orcl="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc">
<partnerLinks>
<partnerLink name="client" partnerLinkType="client:pokusy"
myRole="pokusyProvider" partnerRole="pokusyRequester"/>
</partnerLinks>
<variables>
<variable name="inputVariable" messageType="client:pokusyRequestMessage"/>
<variable name="outputVariable" messageType="client:pokusyResponseMessage"/>
</variables>
<faultHandlers>
<catchAll>
<sequence name="Sequence_2">
<compensate name="Compensate_2" scope="Scope_1"/>
<assign name="Assign_3">
<copy>
<from expression="concat(bpws:getVariableData('outputVariable','payload','/client:pokusyProcessResponse/client:result'),'after compensate..')"/>
<to variable="outputVariable" part="payload"
query="/client:pokusyProcessResponse/client:result"/>
</copy>
</assign>
<invoke name="Invoke_1" partnerLink="client"
portType="client:pokusyCallback" operation="onResult"
inputVariable="outputVariable"/>
</sequence>
</catchAll>
</faultHandlers>
<sequence name="main">
<receive name="receiveInput" partnerLink="client" portType="client:pokusy"
operation="initiate" variable="inputVariable" createInstance="yes"/>
<scope name="Scope_1">
<compensationHandler>
<assign name="Assign_2">
<copy>
<from expression="concat( bpws:getVariableData('outputVariable','payload','/client:pokusyProcessResponse/client:result'),'...COMPENSATE!!!')"/>
<to variable="outputVariable" part="payload"
query="/client:pokusyProcessResponse/client:result"/>
</copy>
</assign>
</compensationHandler>
<sequence name="Sequence_1">
<assign name="Assign_1">
<copy>
<from expression="concat(bpws:getVariableData('inputVariable','payload','/client:pokusyProcessRequest/client:keyCode'),'...first assign...')"/>
<to variable="outputVariable" part="payload"
query="/client:pokusyProcessResponse/client:result"/>
</copy>
</assign>
</sequence>
</scope>
<throw name="Throw_1" faultName="ns5:aa"/>
<invoke name="callbackClient" partnerLink="client"
portType="client:pokusyCallback" operation="onResult"
inputVariable="outputVariable"/>
</sequence>
</process>

this might be caused by a bug I found too causing eventhandlers not to work, the work round in your case would be:
blar blar blar
</variables>
<scope>
<faultHandlers>
blar blar blar
blar blar blar
</sequence>
</scope>
</process>
i.e. what I'm saying is that top level handler don't work since they are ignored by the engine because they are not in a scope. Try it and see....

Button doesn't work

The round button at the bottom of the pad screen is not working properly. It has stopped closing my screen or putting it in sleep mode. Is the a factory problem and how do I get it working?

It's called the 'home button', and it may be fixed by some basic troubleshooting.
First, try rebooting the iPad by pressing and holding both the home and sleep/wake buttons at the same time until the apple logo appears on the screen, and then let go.
If that doesn't work then...
Settings/general/reset/reset all settings
If that doesn't work then...
Restore as new
If none of the above steps work the you may need to set up a repair.

My sleep buttom doesn't work how can i fix it?

i have a ipod touch and the sleep buttom doesn't work how can i fix it? thank you

Hi,
some people round here had success using a 'Standard DVD-cleaner disc' like the ones for Home Theater Systems.
Regards
Stefan

Unix Command doesn't work in Tiger

Hi,
I've got labs of eMacs that I'm finally upgrading to Tiger. My image seems to work fine, but I'm running into a weird quirk with my "Send Unix" commands via ARD. We're doing NWEA testing and LOVE the unix commands because we can login to machines, turn on TestTaker, login to TestTaker, and select the correct test (math or reading) and the right version of the test.
The script below works fine on a panther eMac.
osascript
tell application "System Events"
keystroke "1" using command down
delay 3.0
keystroke ASCII character 31
delay 2.0
keystroke return
keystroke "n" using command down
end tell
On my Tiger machines, the command stops on the:
"Keystroke ASCII character 31" line (this should arrow down to next test version).
A report window comes up in ARD with this error message:
86:104: execution error: System Events got an error: 31 doesn't understand the ASCII character message. (-1708)
This used to work perfectly, but now I can't get ASCII 31 (or arrow down to work). The real killer is that other techs in my school district have eMacs running tiger with same commands that work (some have to arrow down 16 times to get to correct test version). The other commands (like command 1 and returns, command n) all work fine! Hate to have to touch 80 machines each day to select proper test version when we log in.
Any Suggestions????

Try this form of the line:
keystroke (ASCII character of 31)
That's worked for some people. Hope it works for you. If it doesn't work as given, try without the parentheses.
Regards.

Math.round doesn't work

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