Converting float to binary

Hi,
I was wondering if anyone knew of a way to convert a float value (as ascii) to a binary value?
I need a program that will take in a number of floating values from a file, convert the values to binary and then write out these values in another file, 4 bytes at a time.
I know that you can convert decimals to binary with an easy function but i've searched for float to binary and came up with nothing.
any help would be really appreciated,
cheers!

One of the Java's problems is that you can easily get lost in the sea of Javadocs...
java.io.DataOutputStream
writeFloat(float v)
Converts the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the underlying output stream as a 4-byte quantity, high byte first.
java.io.DataInputStream
readFloat
public float readFloat()
throws IOException
Reads four input bytes and returns a float value. It does this by first constructing an int value in exactly the manner of the readInt method, then converting this int value to a float in exactly the manner of the method Float.intBitsToFloat. This method is suitable for reading bytes written by the writeFloat method of interface DataOutput.

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Convert float to 4 bytes array

How can I convert float type to 4 byte array -
not with strings but to exact binary representation.

See the javadoc of Float.floatToIntBits. Converting an int to an array of 4 bytes is easy, so I will left it as an exercise.
floatToIntBits
public static int floatToIntBits(float value)Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "single format" bit layout.
Bit 31 (the bit that is selected by the mask 0x80000000) represents the sign of the floating-point number. Bits 30-23 (the bits that are selected by the mask 0x7f800000) represent the exponent. Bits 22-0 (the bits that are selected by the mask 0x007fffff) represent the significand (sometimes called the mantissa) of the floating-point number.
If the argument is positive infinity, the result is 0x7f800000.
If the argument is negative infinity, the result is 0xff800000.
If the argument is NaN, the result is 0x7fc00000.
In all cases, the result is an integer that, when given to the intBitsToFloat(int) method, will produce a floating-point value the same as the argument to floatToIntBits (except all NaN values are collapsed to a single "canonical" NaN value).
Parameters:
value - a floating-point number.
Returns:
the bits that represent the floating-point number.

Converting characters to binary

Could anyone give me an idea how to convert characters to binary, and vice verse?
It's like those hex and binary editors out there.

See if this helps you out
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String binaryString = Integer.toBinaryString(c);
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Thanks. It worked.

How to convert image to binary format

Hi all,
We have developed an Employee search mobile web application in .net which is hosted on an exposed IP server, we need to show the employee data along with the image of the employee on mobile.
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How to convert pdf to binary

hi all,
how to convert pdf to binary .
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refer this -
http://www.geocities.com/rmtiwari/main.html?http://www.geocities.com/rmtiwari/Resources/MySolutions/Dev/Codes/Report/Z_RMTIWARI_XSTRING_TEXT_CONVER.html

Function module to convert float value to data type 'dec'

Hi experts,
In a report i need to convert float value to the data type 'DEC'. How to convert it. Is there any function module for this conversion.
Thanks and Regards,
Vaibhav Tiwari.

Hi ..
We can do like this...
Data : V_float type F value '12345.67'.
Data: V_dec type P Decimals 2.
Write:/ V_float exponent 0. "This will display it like Type P
or
Write V_float to V_dec EXPONENT 0.
Write:/ V_dec.
reward if Helpful.

Converting ASCII as Binary... Transposed?

Hello friends!
I am building a VI to break apart a string of characters and convert each to binary code. Please see the attached example. When verifying the input string against the output boolean array, I notice that each 8bit code is transposed from left to right when compared against any standard ASCII to Binary table. Am I understand that binary is usually read from right to left? My concern is how other systems will translate this code after it is transferred. The main question is this: Do I leave it be, or transpose it before data transfer?
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Thanks,
Zach
Solved!
Go to Solution.
Attachments:
example_strobe_1.vi ‏7 KB

Remember you are looking at an array. Index 0 of an array (which corresponds to bit 0 of the number) will be to the left. As long as you are just doing standard computer functions and bit manipulations, don't worry about it.
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Converting ASCII to Binary

Hello I need some help.
I need to convert the ASCII data to Binary form. Like if i have the character 'A' and its ASCII is 65 then its binary would be 01000001.
If there is any function/method available in java to convert ascii to binary, i would be really thanful.

Hello I need some help.
I need to convert the ASCII data to Binary form. Like
if i have the character 'A' and its ASCII is 65 then
its binary would be 01000001.
If there is any function/method available in java to
convert ascii to binary, i would be really thanful.
byte ascii = 65;
String binresult = "";
for(int i=0;i<8;i++) {
if(ascii%(2^i)=0) binresult += "0";
else binresult += "1";
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How to convert XML to Binary in OSB Message flow

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Can you please help me in converting XML to Binary in OSB Message flow.
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ah ok, then you have to apply a transformation from XML to some fixed length format, EDI style
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I will let you digest this info and then we can continue.
There are a number of threads in this forum on whether one technology is better than the other (as usual, google can assist you)

Convert float to rational

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The TIFF tag header protocol requires a data type I am not really conversant with, the Rational Data type: http://en.wikipedia.org/wiki/Rational_data_type
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SHAZAM!
Solved!
Go to Solution.

I was curious if there were other ways to do this and found that Scilab combined with the LabVIEW Gateway works quite well. The 'rat' function is available in Scilab; Scilab and the LabVIEW gateway were both easy to install...
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Now is the right time to use %^<%Y-%m-%dT%H:%M:%S%3uZ>T
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Converting float array to Float array

Hi, is there any efficent way to convert float[][] to Float[][] without iterating the array and creating Float object for each float data? I have a method performing calculations based on a 2D array( float[][]) and then need to store the result in a TreeMap data structure. The "put" method for TreeMap ask Object type.
Thanks in advance!

1) No
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Object obj = new float[]{1.0, 2.0, 3.0};3) What you want to store? If your structure is somewhat like this:
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Arithmetic Overflow error converting float to data type numeric

Hi,
Am facing strange issue,I have function which returns money datatype and assigning the return money value to float datatype in table.
Error msg:
Msg 8115, Level 16, State 6, Procedure GBCalcCatalogPriceNewV2, Line 204
Arithmetic overflow error converting float to data type numeric.
The statement has been terminated.
Strange thing is the same stored procedure is working fine in production environment,but in the deveopment i see this error.Am scared if the same happens in the production environment.Please advice and advance
thanks
Regards
RAj

Strange thing is the same stored procedure is working fine in production environment,
How could that be strange? This is an error that occurs depending on the data. Accidents that are waiting to happen will happen sooner or later.
Then again, a development database may be more prone to such errors, because data that entered are completely out of whack with real life data. Still it is a warning sign. If you have some place where you convert data from float to numeric, you must consider
the risk that the float value is outside the range for the numeric data type. How do you prevent that from happening? Maybe a CHECK constraint on the column? Of if the data origins from a money column, use a numeric data type with sufficient precision.
Erland Sommarskog, SQL Server MVP, [email protected]

Hi I would like to know if you can convert decimal to binary using actionscript 3.0?

Hi I would like to know if you can convert decimal to binary using actionscript 3.0?

Hi thanks for the response Ive tried to implement the code as you stated but it is not outputting please if you could check the following code and let me know where Ive gone wrong that would be much appreciated Thanks!.
miles_txt.addEventListener(KeyboardEvent.KEY_DOWN,convertKilometres);
miles_txt.restrict ="0-9";
function convertKilometres (k:KeyboardEvent):void {
var miles:Number;
var kilometres:Number;
if (k.keyCode == Keyboard.ENTER){
miles=Number(miles_txt.text);
kilometres=miles* 1.609344;
kilometres_txt.text = kilometres.toPrecision(2);
kilometreConvert_txt.addEventListener(KeyboardEvent.KEY_DOWN,convertKiloToMile);
kilometreConvert_txt.restrict = "0-9";
function convertKiloToMile(k:KeyboardEvent):void{
var kilometreConvert:Number;
var milesAnswer:Number;
if (k.keyCode==Keyboard.ENTER) {
kilometreConvert=Number(kilometreConvert_txt.text);
milesAnswer=kilometreConvert* 0.621371192;
milesAnswer_txt.text = milesAnswer.toPrecision(2);
binary_txt.addEventListener(KeyboardEvent.KEY_DOWN, checkEnterKey2);
function checkEnterKey2(e:KeyboardEvent):void{
if(binary_txt.text != '' && e.keyCode == Keyboard.ENTER){
decimal_txt.text=binaryToDecimal(binary_txt.text).toString();
function binaryToDecimal(s:String):Number{
var n:Number = 0
for(var i:int=0;i<s.length;i++){
n+=Number(s.substr(i,1))<<(s.length-1-i)
return n;
function decimalToBinary(n:Number):String{
return n.toString(2);
return_btn.addEventListener(MouseEvent.CLICK, goBackToCalculator);
function goBackToCalculator(e:Event):void
mybuttonSound.play();
gotoAndStop("Calculator");
clear_btn.addEventListener(MouseEvent.CLICK,clearField);
function clearField(e:MouseEvent):void{
mybuttonSound.play();
miles_txt.text ="";
kilometres_txt.text ="";
milesAnswer_txt.text ="";
kilometreConvert_txt.text ="";
binary_txt.text ="";
decimal_txt.text ="";

Convert float to Float

Hi,
How can I convert float to Float?
thanks
andrew

I got the answer myself, Float Q = new Float(q);

Convert float to integer

how to convert float to integer?
and convert it back from integer to float?

You can cast a float to an integer using the following syntax:
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int i = 3;
float f = (float)i;
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Converting float to binary

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