Float number rounding

how can I determine whether the number of digits after decimal point is greater than one? For e.g., the float number of 16.04(or more digits) should be rounded, but the number of 16.1 should not be rounded.
Is there any other convenience method except the split method in String class?
thanks in advance.

Yes, the formula you mentioned is what I'm using to round the float number to the tenth place.
float f = ...;
f = Math.floor(f*10) / 10;
but the float number I'm choosing to be rounded should have the number of digit numbers after decimal point greater than one, for e.g.,
f = 16.045 need to be rounded to 16.0 using that formula
f = 16.01 ......
f = 16.0 need not to be rounded since it aready just have one digit number after decimal point
f = 15.9 ......
sorry about the confusion. thanks for your help.

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Round up a float number

Hi!
Which Math function do I have to use to round up a float number ? I thought the correct one was the Math.ceil() function but I don't get what I need. I mean, which is the correct function to get the following result:
Math.function(2.75)=3
Thanks

This is what I get:
Math.ceil(2.75)=2I get 3.0 for that calculation. You must be doing something besides the raw calculation. Here's my code that tests it:public static void main(String[] args) {
System.out.println(Math.ceil(2.75));
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PC²

How is it possible to precise a float number in java

Hello ,
It is my second post and i couldnt find an answer to it. The problem ii want to display a float number with only the last three decimal after the comma. For example, float x = 23.445566 and i need to display only 23.445
How can i do that ? here is the code:
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Please help.
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You're right - java.text.Decimal format uses round half even, java.util.Formatter uses round half up.
    Float f = 0.5F;
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1
0In the ASNI C implementations I've worked with, printf also uses half-even.
Bizarre.
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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.

Looking for VI where i can convert covert a float number to Q 11.5 representation

looking for VI where i can convert covert a float number to Q 11.5 representation and what exactly Q 11.5 representation means.
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Solved!
Go to Solution.

Appears to be right, but don't forget to round to the nearest integer.
http://zone.ni.com/reference/en-XX/help/371361H-01/glang/round_to_nearest/
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Error in mapping for floating Number calculation

Hi All,
   I have a small doubt in floating number calculation in Mapping.
Actually i am geting a floating point number and calculating the SUM and generating the output. The input is of 2 decimal places(Ex: 26.02 and 26.03 ), but when it is adding all the values it is generating a three digit decimal number (Ex: 52.050003)
I dont know from where it is geting one extra number "2" in the output.
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JAY

Jay,
Please use the below code and let us know, if it helps.
BigDecimal sum= new BigDecimal("0");
BigDecimal bd;
if(a != null && a.length > 0.00)
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in import section - java.math.*;
raj.
Edited by: Raj on Feb 18, 2008 11:11 AM

How to get the amplitude of a sound as a float number in Java

Hi, I would like to create a program which plays an audio file(it may be a midi, probably) and it returns
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I mean, is it possible to obtain this number, since every sound file is actually a sequence of float number like
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Frank

For sampled sound, the answer might be seen in [ this thread|http://forums.sun.com/thread.jspa?messageID=10636576#10636576]. For MIDI it is different in that you will only be able to get it as sampled sound once it has been synthesized, and as I recently found out, to get the audio coming through the regular sound lines will take nothing less than a physcical or software 'audio loopback' being installed, on most PCs.
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Converting string to float number

Here's what I'm trying to do. The user types a number, such as 12.011, in an input box. I want to check to see if the number they typed is between two numbers, such as 12 and 12.1. Therefore, I want to convert the string in the input box to a float number, not an integer, so I can check to see if it's in the correct range. How do I convert a string into a float number?
thanks
Mark

Did you try:
Number(textinput1.text);
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hi thanks for the reply, the answer you gave helped me out.
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How to transfer a float number to boolean

Ｉ　ｗａｎｔ　ｔｏ　ｔｒａｎｓｆｅｒ　ａ　ｆｌｏａｔ　ｎｕｍｂｅｒ　ｔｏ　ａ　ｂｏｏｌｅａｎ　ａｒｒａｙ？　Ｈｏｗ　ｃａｎ　Ｉ　ａｃｈｉｅｖｅ？
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YoungHang wrote:
but actually "number to boolean array" can only transfer a integer or fixed-point number to boolean array , not float number
Just typecast the DBL to U64 first.
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Float number

Hi,
I want to display the float number, when i use the numeric indicator, it only display the interger. how can i find the float number.
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Right click on the control or terminal, then select "Representation..."
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...

Round up float number

Hi,
I have to manage floats with euro format .
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<CODE>
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float second = 1.81;
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the result of thi addition is tot = 80.11999......
sigh!!
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You don't. But you can format it rounded. (i.e., the stuff in the java.text package, like DecimalFormat).
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This issue keeps coming up. Check the forum for a recent thread about fractions.

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.
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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!
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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 .
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digits.png ‏25 KB

How to Enter Floating number in Modbus Register

Hello,
I want to set one floating value in modbus register located on 400.but I am not able to do so its only accept real number.
Will you please guide me what should I do in order to solve this problem??
I tried with suggestion which is given in link but still I am not able to connect the output to the modbus which I have mark red in attachment.
http://digital.ni.com/public.nsf/allkb/AD8172B710AFB13F86257974007D6F52
Actually I want to set my actual current value same as measured value that's why I need to do this operation.
Thank you very much in advance.
Attachments:
internal current.png ‏416 KB

The best way what i found is multiply the number by 100 if after decimal 2 digit precision is OK with you other wise 1000 if 3. digit precision. Then write to register.
Later when reading read & divide by 100 or 1000 whatever
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet

Whole number rounding off in bom

is it possible not to round off whole numbers in the bom component quantity? for example, when i input the number 8.000, the system rounds it off to just 8.

Hi,
Please let know your unit of measurement.
Goto CUNI set the Decimal places and decimal pl.routing = 3 for your unit .
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If your unit is related to whole number like Nos, EA system will give warring message.
Pradeep

Float number rounding

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