Convert float to Float lost precision?
Hi all,
float r = 3.456789012f;
Float R = new Float(r);
System.out.println (R.toString());
float y = R.floatValue();
System.out.println(y);
gives 3.4567890 in both cases.
Is the precision being truncated when changing from float to Float?
any help please to ensure all precision can be maintained?
thanks
andrew
Is the precision being truncated when changing from
float to Float?
Nope. Try System.out.println(r).
any help please to ensure all precision can be
maintained?
Nope. The float data type can't handle that much precision. You can use double to get a bit better precision, and the java.math.BigDecimal class to get arbitrary precision.
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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.
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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.
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Function module to convert float value to data type 'dec'
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We can do like this...
Data : V_float type F value '12345.67'.
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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.
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Converting float array to Float array
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Hi,
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and convert it back from integer to float?You can cast a float to an integer using the following syntax:
float f = 1.245;
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Knowledge is the only thing that I can give you, and still retain, and we are both better off for it.If they are float values, they have the full precision you can get with a float value.
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Hi,
I was wondering if anyone knew of a way to convert a float value (as ascii) to a binary value?
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java.io.DataOutputStream
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java.io.DataInputStream
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* Check.java
* Created on January 23, 2008, 9:55 AM
package payrollapplication;
public class Check extends javax.swing.JFrame {
public Employee emp;
String expanded;
/** Creates new form Check */
boolean debug = true;
public Check() {
initComponents();
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">
private void initComponents() {
date = new javax.swing.JLabel();
jPanel1 = new javax.swing.JPanel();
name = new javax.swing.JLabel();
amtexpanded = new javax.swing.JLabel();
amtnum = new javax.swing.JLabel();
empid = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setTitle("EMP Name Here");
setAlwaysOnTop(true);
setCursor(new java.awt.Cursor(java.awt.Cursor.CROSSHAIR_CURSOR));
setResizable(false);
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowActivated(java.awt.event.WindowEvent evt) {
formWindowActivated(evt);
date.setText("DATE");
jPanel1.setBackground(new java.awt.Color(102, 102, 0));
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 429, Short.MAX_VALUE)
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 62, Short.MAX_VALUE)
name.setText("NAME");
amtexpanded.setText("AMT EXPANDED");
amtnum.setText("AMT #");
empid.setText("EMPID");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(10, 10, 10)
.addComponent(amtexpanded, javax.swing.GroupLayout.DEFAULT_SIZE, 342, Short.MAX_VALUE))
.addComponent(name, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 352, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(amtnum, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(date, javax.swing.GroupLayout.DEFAULT_SIZE, 71, Short.MAX_VALUE)
.addComponent(empid, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addContainerGap())
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(14, 14, 14)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(date)
.addComponent(name))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(amtnum)
.addComponent(amtexpanded, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(empid)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
pack();
}// </editor-fold>
private void formWindowActivated(java.awt.event.WindowEvent evt) {
initDisplay(); //Computes the expanded form of the number and fills the windows with information
amtexpanded.setText(expanded);
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Check().setVisible(true);
public void initDisplay() {
try {
amtnum.setText("$"+emp.netpay); //Fill in the net pay
name.setText(""+emp.fname+" "+emp.mname+" "+emp.lname+" "+emp.suffix); //Fill in the name
System.out.println("NOT YET IMPLEMENTED");
expanded = "";
//begin to compute the expanded form
//determine the length of the left side of the decimal
expanded = emp.netpay+"";
String[] split = expanded.split(".");
int length = split[0].length();
//Now we compute the first half of the number
int wholeLength = split[0].length();
char[] arr = split[0].toCharArray(); //create the character array
expanded = ""; //Clear it
if(length == 3) {
System.out.println("Length of 3, working...");
//Assume we are starting at the one thousands
//Since 0 is 1, we need to test for 3 for 1,000s not 4
switch(arr[3]) {
case '1': expanded = "One Thousand ";
case '2': expanded = "Two Thousand ";
case '3': expanded = "Three Thousand ";
case '4': expanded = "Four Thousand ";
case '5': expanded = "Five Thousand ";
case '6': expanded = "Six Thousand ";
case '7': expanded = "Seven Thousand ";
case '8': expanded = "Eight Thousand ";
case '9': expanded = "Nine Thousand ";
switch(arr[2]) {
case '1': expanded = expanded + "One-Hundred ";
case '2': expanded = expanded + "Two-Hundred ";
case '3': expanded = expanded + "Three-Hundred ";
case '4': expanded = expanded + "Four-Hundred ";
case '5': expanded = expanded + "Five-Hundred ";
case '6': expanded = expanded + "Six-Hundred ";
case '7': expanded = expanded + "Seven-Hundred ";
case '8': expanded = expanded + "Eight-Hundred ";
case '9': expanded = expanded + "Nine-Hundred ";
switch(arr[1]) {
case '0': {
switch(arr[0]) {
case '0': expanded = expanded + "";
case '1': expanded = expanded + "and One";
case '2': expanded = expanded + "and Two";
case '3': expanded = expanded + "and Three";
case '4': expanded = expanded + "and Four";
case '5': expanded = expanded + "and Five";
case '6': expanded = expanded + "and Six";
case '7': expanded = expanded + "and Seven";
case '8': expanded = expanded + "and Eight";
case '9': expanded = expanded + "and Nine";
case '1': {
switch(arr[0]) {
case '0': expanded = expanded + "and Ten";
case '1': expanded = expanded + "and Eleven";
case '2': expanded = expanded + "and Twelve";
case '3': expanded = expanded + "and Thirteen";
case '4': expanded = expanded + "and Fourteen";
case '5': expanded = expanded + "and Fifteen";
case '6': expanded = expanded + "and Sixteen";
case '7': expanded = expanded + "and Seventeen";
case '8': expanded = expanded + "and Eighteen";
case '9': expanded = expanded + "and Nineteen";
case '2': {
switch(arr[0]) {
case '0': expanded = expanded + "and Twenty";
case '1': expanded = expanded + "and Twenty-One";
case '2': expanded = expanded + "and Twenty-Two";
case '3': expanded = expanded + "and Twenty-Three";
case '4': expanded = expanded + "and Twenty-Four";
case '5': expanded = expanded + "and Twenty-Five";
case '6': expanded = expanded + "and Twenty-Six";
case '7': expanded = expanded + "and Twenty-Seven";
case '8': expanded = expanded + "and Twenty-Eight";
case '9': expanded = expanded + "and Twenty-Nine";
case'3': {
switch(arr[0]) {
case '0': expanded = expanded + "and Thirty";
case '1': expanded = expanded + "and Thirty-One";
case '2': expanded = expanded + "and Thirty-Two";
case '3': expanded = expanded + "and Thirty-Three";
case '4': expanded = expanded + "and Thirty-Four";
case '5': expanded = expanded + "and Thirty-Five";
case '6': expanded = expanded + "and Thirty-Six";
case '7': expanded = expanded + "and Thirty-Seven";
case '8': expanded = expanded + "and Thirty-Eight";
case '9': expanded = expanded + "and Thirty-Nine";
case '4': {
switch(arr[0]) {
case '0': expanded = expanded + "and Fourty";
case '1': expanded = expanded + "and Fourty-One";
case '2': expanded = expanded + "and Fourty-Two";
case '3': expanded = expanded + "and Fourty-Three";
case '4': expanded = expanded + "and Fourty-Four";
case '5': expanded = expanded + "and Fourty-Five";
case '6': expanded = expanded + "and Fourty-Six";
case '7': expanded = expanded + "and Fourty-Seven";
case '8': expanded = expanded + "and Fourty-Eight";
case '9': expanded = expanded + "and Fourty-Nine";
case '5': {
switch(arr[0]) {
case '0': expanded = expanded + "and Fifty";
case '1': expanded = expanded + "and Fifty-One";
case '2': expanded = expanded + "and Fifty-Two";
case '3': expanded = expanded + "and Fifty-Three";
case '4': expanded = expanded + "and Fifty-Four";
case '5': expanded = expanded + "and Fifty-Five";
case '6': expanded = expanded + "and Fifty-Six";
case '7': expanded = expanded + "and Fifty-Seven";
case '8': expanded = expanded + "and Fifty-Eight";
case '9': expanded = expanded + "and Fifty-Nine";
case '6': {
switch(arr[0]) {
case '0': expanded = expanded + "and Sixty";
case '1': expanded = expanded + "and Sixty-One";
case '2': expanded = expanded + "and Sixty-Two";
case '3': expanded = expanded + "and Sixty-Three";
case '4': expanded = expanded + "and Sixty-Four";
case '5': expanded = expanded + "and Sixty-Five";
case '6': expanded = expanded + "and Sixty-Six";
case '7': expanded = expanded + "and Sixty-Seven";
case '8': expanded = expanded + "and Sixty-Eight";
case '9': expanded = expanded + "and Sixty-Nine";
case '7': {
switch(arr[0]) {
case '0': expanded = expanded + "and Seventy";
case '1': expanded = expanded + "and Seventy-One";
case '2': expanded = expanded + "and Seventy-Two";
case '3': expanded = expanded + "and Seventy-Three";
case '4': expanded = expanded + "and Seventy-Four";
case '5': expanded = expanded + "and Seventy-Five";
case '6': expanded = expanded + "and Seventy-Six";
case '7': expanded = expanded + "and Seventy-Seven";
case '8': expanded = expanded + "and Seventy-Eight";
case '9': expanded = expanded + "and Seventy-Nine";
case '8': {
switch(arr[0]) {
case '0': expanded = expanded + "and Eighty";
case '1': expanded = expanded + "and Eighty-One";
case '2': expanded = expanded + "and Eighty-Two";
case '3': expanded = expanded + "and Eighty-Three";
case '4': expanded = expanded + "and Eighty-Four";
case '5': expanded = expanded + "and Eighty-Five";
case '6': expanded = expanded + "and Eighty-Six";
case '7': expanded = expanded + "and Eigthy-Seven";
case '8': expanded = expanded + "and Eighty-Eight";
case '9': expanded = expanded + "and Eighty-Nine";
case '9': {
switch(arr[0]) {
case '0': expanded = expanded + "and Ninety";
case '1': expanded = expanded + "and Ninety-One";
case '2': expanded = expanded + "and Ninety-Two";
case '3': expanded = expanded + "and Ninety-Three";
case '4': expanded = expanded + "and Ninety-Four";
case '5': expanded = expanded + "and Ninety-Five";
case '6': expanded = expanded + "and Ninety-Six";
case '7': expanded = expanded + "and Ninety-Seven";
case '8': expanded = expanded + "and Ninety-Eight";
case '9': expanded = expanded + "and Ninety-Nine";
//Now we move down the length, 2, 1 ,
if(length == 2) {
System.out.println("length of 2, working...");
switch(arr[2]) {
case '1': expanded = expanded + "One-Hundred ";
case '2': expanded = expanded + "Two-Hundred ";
case '3': expanded = expanded + "Three-Hundred ";
case '4': expanded = expanded + "Four-Hundred ";
case '5': expanded = expanded + "Five-Hundred ";
case '6': expanded = expanded + "Six-Hundred ";
case '7': expanded = expanded + "Seven-Hundred ";
case '8': expanded = expanded + "Eight-Hundred ";
case '9': expanded = expanded + "Nine-Hundred ";
switch(arr[1]) {
case '0': {
switch(arr[0]) {
case '0': expanded = expanded + "";
case '1': expanded = expanded + "and One";
case '2': expanded = expanded + "and Two";
case '3': expanded = expanded + "and Three";
case '4': expanded = expanded + "and Four";
case '5': expanded = expanded + "and Five";
case '6': expanded = expanded + "and Six";
case '7': expanded = expanded + "and Seven";
case '8': expanded = expanded + "and Eight";
case '9': expanded = expanded + "and Nine";
case '1': {
switch(arr[0]) {
case '0': expanded = expanded + "and Ten";
case '1': expanded = expanded + "and Eleven";
case '2': expanded = expanded + "and Twelve";
case '3': expanded = expanded + "and Thirteen";
case '4': expanded = expanded + "and Fourteen";
case '5': expanded = expanded + "and Fifteen";
case '6': expanded = expanded + "and Sixteen";
case '7': expanded = expanded + "and Seventeen";
case '8': expanded = expanded + "and Eighteen";
case '9': expanded = expanded + "and Nineteen";
case '2': {
switch(arr[0]) {
case '0': expanded = expanded + "and Twenty";
case '1': expanded = expanded + "and Twenty-One";
case '2': expanded = expanded + "and Twenty-Two";
case '3': expanded = expanded + "and Twenty-Three";
case '4': expanded = expanded + "and Twenty-Four";
case '5': expanded = expanded + "and Twenty-Five";
case '6': expanded = expanded + "and Twenty-Six";
case '7': expanded = expanded + "and Twenty-Seven";
case '8': expanded = expanded + "and Twenty-Eight";
case '9': expanded = expanded + "and Twenty-Nine";
case'3': {
switch(arr[0]) {
case '0': expanded = expanded + "and Thirty";
case '1': expanded = expanded + "and Thirty-One";
case '2': expanded = expanded + "and Thirty-Two";
case '3': expanded = expanded + "and Thirty-Three";
case '4': expanded = expanded + "and Thirty-Four";
case '5': expanded = expanded + "and Thirty-Five";
case '6': expanded = expanded + "and Thirty-Six";
case '7': expanded = expanded + "and Thirty-Seven";
case '8': expanded = expanded + "and Thirty-Eight";
case '9': expanded = expanded + "and Thirty-Nine";
case '4': {
switch(arr[0]) {
case '0': expanded = expanded + "and Fourty";
case '1': expanded = expanded + "and Fourty-One";
case '2': expanded = expanded + "and Fourty-Two";
case '3': expanded = expanded + "and Fourty-Three";
case '4': expanded = expanded + "and Fourty-Four";
case '5': expanded = expanded + "and Fourty-Five";
case '6': expanded = expanded + "and Fourty-Six";
case '7': expanded = expanded + "and Fourty-Seven";
case '8': expanded = expanded + "and Fourty-Eight";
case '9': expanded = expanded + "and Fourty-Nine";
case '5': {
switch(arr[0]) {
case '0': expanded = expanded + "and Fifty";
case '1': expanded = expanded + "and Fifty-One";
case '2': expanded = expanded + "and Fifty-Two";
case '3': expanded = expanded + "and Fifty-Three";
case '4': expanded = expanded + "and Fifty-Four";
case '5': expanded = expanded + "and Fifty-Five";
case '6': expanded = expanded + "and Fifty-Six";
case '7': expanded = expanded + "and Fifty-Seven";
case '8': expanded = expanded + "and Fifty-Eight";
case '9': expanded = expanded + "and Fifty-Nine";
case '6': {
switch(arr[0]) {
case '0': expanded = expanded + "and Sixty";
case '1': expanded = expanded + "and Sixty-One";
case '2': expanded = expanded + "and Sixty-Two";
case '3': expanded = expanded + "and Sixty-Three";
case '4': expanded = expanded + "and Sixty-Four";
case '5': expanded = expanded + "and Sixty-Five";
case '6': expanded = expanded + "and Sixty-Six";
case '7': expanded = expanded + "and Sixty-Seven";
case '8': expanded = expanded + "and Sixty-Eight";
case '9': expanded = expanded + "and Sixty-Nine";
case '7': {
switch(arr[0]) {
case '0': expanded = expanded + "and Seventy";
case '1': expanded = expanded + "and Seventy-One";
case '2': expanded = expanded + "and Seventy-Two";
case '3': expanded = expanded + "and Seventy-Three";
case '4': expanded = expanded + "and Seventy-Four";
case '5': expanded = expanded + "and Seventy-Five";
case '6': expanded = expanded + "and Seventy-Six";
case '7': expanded = expanded + "and Seventy-Seven";
case '8': expanded = expanded + "and Seventy-Eight";
case '9': expanded = expanded + "and Seventy-Nine";
case '8': {
switch(arr[0]) {
case '0': expanded = expanded + "and Eighty";
case '1': expanded = expanded + "and Eighty-One";
case '2': expanded = expanded + "and Eighty-Two";
case '3': expanded = expanded + "and Eighty-Three";
case '4': expanded = expanded + "and Eighty-Four";
case '5': expanded = expanded + "and Eighty-Five";
case '6': expanded = expanded + "and Eighty-Six";
case '7': expanded = expanded + "and Eigthy-Seven";
case '8': expanded = expanded + "and Eighty-Eight";
case '9': expanded = expanded + "and Eighty-Nine";
case '9': {
switch(arr[0]) {
case '0': expanded = expanded + "and Ninety";
case '1': expanded = expanded + "and Ninety-One";
case '2': expanded = expanded + "and Ninety-Two";
case '3': expanded = expanded + "and Ninety-Three";
case '4': expanded = expanded + "and Ninety-Four";
case '5': expanded = expanded + "and Ninety-Five";
case '6': expanded = expanded + "and Ninety-Six";
case '7': expanded = expanded + "and Ninety-Seven";
case '8': expanded = expanded + "and Ninety-Eight";
case '9': expanded = expanded + "and Ninety-Nine";
if(length == 1) {
System.out.println("Length of 1 working....");
switch(arr[1]) {
case '0': {
switch(arr[0]) {
case '0': expanded = expanded + "";
case '1': expanded = expanded + "and One";
case '2': expanded = expanded + "and Two";
case '3': expanded = expanded + "and Three";
case '4': expanded = expanded + "and Four";
case '5': expanded = expanded + "and Five";
case '6': expanded = expanded + "and Six";
case '7': expanded = expanded + "and Seven";
case '8': expanded = expanded + "and Eight";
case '9': expanded = expanded + "and Nine";
case '1': {
switch(arr[0]) {
case '0': expanded = expanded + "and Ten";
case '1': expanded = expanded + "and Eleven";
case '2': expanded = expanded + "and Twelve";
case '3': expanded = expanded + "and Thirteen";
case '4': expanded = expanded + "and Fourteen";
case '5': expanded = expanded + "and Fifteen";
case '6': expanded = expanded + "and Sixteen";
case '7': expanded = expanded + "and Seventeen";
case '8': expanded = expanded + "and Eighteen";
case '9': expanded = expanded + "and Nineteen";
case '2': {
switch(arr[0]) {
case '0': expanded = expanded + "and Twenty";
case '1': expanded = expanded + "and Twenty-One";
case '2': expanded = expanded + "and Twenty-Two";
case '3': expanded = expanded + "and Twenty-Three";
case '4': expanded = expanded + "and Twenty-Four";
case '5': expanded = expanded + "and Twenty-Five";
case '6': expanded = expanded + "and Twenty-Six";
case '7': expanded = expanded + "and Twenty-Seven";
case '8': expanded = expanded + "and Twenty-Eight";
case '9': expanded = expanded + "and Twenty-Nine";
case'3': {
switch(arr[0]) {
case '0': expanded = expanded + "and Thirty";
case '1': expif(length == 3) {
System.out.println("Length of 3, working...");
//Assume we are starting at the one thousands
//Since 0 is 1, we need to test for 3 for 1,000s not 4
switch(arr[3]) {Arrays in Java start at index zero, so if the length of an array is 3, then the valid indices are 0,1 and 2.
You also can make the whole thing much cleaner with using the way things are phrased in English - you say "one million, one hundred and fifty thousand, two hundred and seventy six pounds, thirty seven pence", so if you write a routine which converts an integer between 0 (inclusive) and 1000 (exclusive), and call that for the millions, thousands, units and cents in turn. You also might want to use localized strings in an array instead of coding everything as a sequence of switch statements. -
Floating point precision of "Flatten to XML"
It appears that the "Flatten to XML" function (LV 7.1.1) truncates floating point numbers to 5 decimal places. This is a rather annoying limitation, since I'm trying to store a relative time in hours, accurate to the second (chosen by a previous coder that I have to be compatible with - otherwise I'd just use seconds). Is there a workaround to this? (other than multiplying by some power of 10 before flattening, and dividing after unflattening)
JaegenHi Paul and Jaegen,
I checked our databases and found entries of product suggestions and
corrective action requests for the behavior of the limited precision
when flattening to XML. I found an interesting reply from a LabVIEW
developer on the request for further precision:
The Flatten To XML primitive puposefully cuts off all numbers at 5
digits after the decimal. There are 3 main reasons for this:
Information regarding precision is not propagated on the wire.
Therefore, there is no real way to know how many significant digits or
even places past the decimal point is appropriate when data is
flattened to XML.
Bloat. If all floating point values printed all of the possible
decimal digits all of the time, this would provide for some very large
blocks of XML code.
Given the arbitrarily complex nature of LabVIEW data, it is
difficult to provide a method for specifying precision. For example, if
a user has a cluster of clusters, each of which contain a single,
double and extended representing various measurements of differing
accuracy, how can one precision setting be applied to each of these
values? The user would have to unbundle (and index if an array was
involved), flatten, concatenate, and then the reverse on the unflatten
side.
I suggest that you go ahead and file a new product suggestion by using the "feedback" link on www.ni.com/contact.
It would be best if you could give some detailed information on how you
would like LabVIEW to handle different scenarios while getting around
the above issues.
Thanks for the feedback!
- Philip Courtois, Thinkbot Solutions -
We have an application that stores dates as FLOATs in its Oracle tables. For example, since I'm writing this at 3:40 CDT on 05/25/2005, the FLOAT representation of this is 38497.6531944444. Via SQL, how can I convert this to a date that my eyeballs can understand? Thanks!
Interestingly, though, when you copy and paste 38497.6531944444 into an Excel spreadsheet and change the cell format to Date, it returns the correct date of 05/25/2005, even though the Help section has this explanation with regard to how it converts the numbers to dates:
"Microsoft Excel stores dates as sequential numbers which are called serial values. By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900."
That two-day difference between Excel and Oracle is curious. Perhaps because 1900 was not a Leap Year and MS considers 1 -- not zero -- as 01/01/1900? If so, if I hard-code 12/30/1899 into my report it'll be fine until 2100, which is not a Leap Year! -
We have swipe system , its transactions date are storing in float format. How to convert these float number to oracle dates.
Below I have pasted the float numers, I am able to convert these float number using excel.
Float Number
=========
40814.221528
40814.221609
40814.221505
40814.223727
After converting in excel
===============
9/28/11 5:19 AM
9/28/11 5:19 AM
9/28/11 5:18 AM
9/28/11 5:22 AM
I will appreciate if some body can helpExcel (and various other Microsoft products) store dates as a float value measured in "days since january first 1900". Your swipe system uses the same format to store dates.
When you enter 40814.221528 in Excel and tell Excel to show the column as date, Excel is simply adding 40814.221528 days to january first 1900 and showing you the output of that calculation.
In theory therefore we can in Oracle do the same calculation as Excel does by doing this:
select DATE '1900-01-01' + 40814.221528 from dual;But like the previous answers show you, that gives a result that is two days "wrong".
The reason for this is most likely two things:
<li>Microsoft probably defines january first 1900 to be "day 1" and not "day 0".
<li>Microsoft looks like they have an error in leap year calculation.
Therefore we can simulate the Microsoft behaviour by offsetting by two days:
select DATE '1900-01-01' - 2 + 40814.221528 from dual;Which is the same as doing this:
select DATE '1899-12-30' + 40814.221528 from dual;Excel is doing the same thing - adding the float value to a fixed date ;-)
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