A problem using doubles/floats

i have an applet with 4 radio buttons and 5 check boxes! when i click on some (mix and match) the value on the text field sometimes goes like this 8.8888889 etc, and other times it is like 2.34! how can i change that 8.88889 to be displayed as 2.34! i have tried changing the value in the code, but that solves the problem but then a diff combination does the same thing! :(

But anyway, since we're in this thread now...
The short version is that there are a finite number of values that can be stored in a float or double, but there are infinitely many float/double values in the real numbers in the range between he min value and max value. So a lot of numbers are going to be aproximations.
Why is a "simple" number like, say, 0.9, not exact, you ask? Java's VM (and pretty much all modern computer hardware) stores floating point number in base-2, not base ten. So if you look at the bits, and you see "1" in the first position after where the binary-point (base-2 equivalent of a decimal point) would be, that doesn't mean 1/10, it means1/2. So "0.5" in decimal (base-10) is the same as "0.1" in binary (base-2). What's "0.1" base-10 in base-2? Don't know off the top of my head, but it's a repeating fraction, just like 0.3333333... for 1/3 (which, in base-3, is 0.1, exactly).
For more details, see:
http://docs.sun.com/source/806-3568/ncg_goldberg.html

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Here is one for our local ISP.
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I am fetching values from database, which is of type double / float.
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Do you Twango?
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How to use Double selection If statements?

Ok, this is what I have to do:
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I can see that working, but
if(user entered 'A') {
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16 ')' expected
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                                ^
21: illegal start of expression
                ^
2 errors
Tool completed with exit code 1Edited by: JackJ11 on Mar 16, 2010 4:29 PM

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I got a problem with datatypes float and int.
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You basically got it. Another approach is to always work on the rightmost digit; that way you'll always be dividing, mod'ing, or multiplying by 10.
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Despite the NI site saying that they are compatible, Hamamatsu tell me that the camera is only compatible with the 1426 using the NI drivers , and not the Hamamatsu vi's. (http://sales.hamamatsu.com/index.php?id=13200492&language=1&)
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Solved!
Go to Solution.

Hi Zeyad,
The HiSense MkII is just a DANTEC relabelled C8484-05C, apparently it has some differences, but I have found none (except the price tag!). For me, the icd file in the previous post (and this one) work for both cameras.
The file I uploaded was a quick fix, but some of the options were not available when in PIV mode. The attached file is one i I improved at a later date, so you may have more luck with it (see note below) When you say you open it with IMAQ, what do you mean specifically? Vision Assistant, or IMAQ within labview? I personally check functionality using MAX, via the acquisition card (PCI 1426).
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I should mention that the one problem I have had is that IMAQ within labview seems incapable of changing the camera mode from double to single, so I have to change it in MAX (I had a guy from LabVIEW look at this, but he couldn't solve it).
Perhaps I could help more if you gave me a little more idea about your setup/application/ details of the errors etc.
Regards
Joe
I could not upload an icd file (interesting choice from NI), so I have saved it as a txt, you will just have to odify the extension to use it
Attachments:
Hamamatsu C8484-05-C2.txt ‏74 KB

SQL*loader support database columns Of Binary Double/Float

Does SQL*loader support database columns Of Binary Double/Float when applying Direct Path?

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Like many, I find the Mosaic screensaver included with Leopard very cool. However, I have a problem using it and wonder if anyone has a workaround. First of all, my iPhoto library is on an external FW HD and has 25-30,000 photos. When I first tried to setup Mosaic, the test under System Prefs worked fine, but in the real world all I got from Mosaic was a black screen and a locked-up system. Sometimes I had to reboot to interrupt it. So I exported 1500 selected photos, disconnected the FW HD, and created a new, smaller iPhoto library. This worked great - Mosaic ran perfectly with no lock-up. Unfortunately, when I reconnected the FW HD, Mosaic started re-indexing and adding in the 1000s of photos from my original library. Back to square one.
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I apologize for not making myself clear. The problem is not with managing iPhoto libraries, rather it is with Mosaic automatically updating its database when it detects an additional source of photos. Let me explain again:
I have one large iPhoto library on an external HD, and a small library on my main HD. I setup Mosaic using the small library and with the external HD detached from my laptop. Under these conditions Mosaic works fine. No problems. However, if I run Mosaic with my external HD attached, the screen goes black and the message "Creating Mosaic Database..." appears together with a progress bar. All of this occurs without iPhoto running at all. After a long wait the database update finishes and Mosaic will no longer run because there are too many photos in its database (I presume). THIS is the problem.

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