Simple IntroductionWhen writing a data platform, it is necessary to make the statistic of passing rate, so it is unavoidable to have decimal condition. At this point, there will be an infinite number of decimals, then how to make a choice?Actual
about several Oracle functions that handle the number of decimal places ()1. Take a few decimals roundedSelect round(1.2345,3) fromdual; Results:1.2352. Keep two decimal places, onlySelectTrunc1.2345,2) fromdual; Results:1.23SelectTrunc1.2399,2)
This article is reproduced, the original address: http://blog.csdn.net/star_huang/article/details/7639267 Today you have an issue that requires you to keep a double of the decimal point for the data of type two. Centralized solution for online
Copy Code code as follows:
Import java.text.*;
Import java.math.*;
public class Test
{
Public Test () {
Double A=savenumber (15.12312312,6);
System.out.println ("a ..." +a);
}
The number of digits to keep the decimal point
Number is
Effect
Key code
void Cdecimaledit::onchar (UINT NChar, uint nrepcnt, uint nflags) {//Todo:add your message Handler co De here and/or call default///guarantee that the decimal point can only occur once if ((nchar==0x08) | | (nchar==0x10))
,
Today, I found Baidu and Mu. I checked Google and Mu. I asked my friend and told me that I had done it myself and finally got it. Haha
Everyone has noticed that, in fact, our law knows that it is wrong:
Note:
The function used to retain two
Double dvalue = 95.12345;
int ivalue = 10000;string strvalue = "95.12345";string result = "";
result = Convert.todouble (Dvalue). ToString ("0.00");//two digits after the decimal point, resulting in 95.12result = Convert.todouble (ivalue). ToString (
Share an interesting test with everyone:
0.1+0.2 = = 0.3//falseSuddenly depressed, OK! The original 0.1+0.2 into: 0.30000000000000004One more 2.4/0.8 =>2.9999999999999996 no way to change it, all of them are converted to integers (2.4 * 100)/(0.8 *
In ax, the base types of the edt type of the quantity and amount are both real. Although the EDT type is created, the selection is real, which is actually called decimal, because this type of EDT is translated into the numbric type in SQL Server,
Copy Code code as follows:
(function () {
var calc = {
/*
function, addition function, used to get the exact addition result
Description: JavaScript addition results will be error, in two floating-point number added when it is more obvious.
If you use php +-*/to calculate the floating point number, you may encounter some calculation result errors, such as echo intval (0.58*100); 57 is printed instead of 58, this is actually a bug that the underlying binary of the computer cannot
If you use PHP +-*/to calculate the floating-point number, you may encounter some errors in the calculation results, such as Echo Intval (0.58*100), will print 57, instead of 58, this is actually the bottom binary system of the computer can not
In php, we usually cannot get the desired result for floating-point computing. Why, next, we will analyze the problem and organize some useful examples for you. In php, we usually cannot get the desired result for floating-point computing. Why, next,
This article introduces you to precise calculation, numerical formatting, and direct introduction of js files.
The Code is as follows:
(Function (){Var calc = {/*The addition function is used to obtain accurate addition results.Note: The addition
If you use PHP +-*/to calculate the floating-point number, you may encounter some errors in the calculation results, such as Echo Intval (0.58*100), will print 57, instead of 58, this is actually the bottom binary system of the computer can not
SQL Server 2005 books online (September 2007)
Precision, decimal places, and length (TRANSACT-SQL)
Precision is the number of digits in a number. The number of decimal places is the number to the right of the decimal point in the number. For
Copy codeThe Code is as follows:(Function (){Var calc = {/*The addition function is used to obtain accurate addition results.Note: The addition result of javascript has an error, which is obvious when two floating point numbers are added. This
If you use php +-*/to calculate the floating point number, you may encounter some calculation result errors, such as echo intval (0.58*100); 57 is printed instead of 58, this is actually a bug that the underlying binary of the computer cannot
PhpBC high-precision function library. PhpBC high-precision function library $ right returns 1 * $ scale decimal place *************************** **************************************** * ******************* $ a4.45; $ b5.54; if (bc php BC
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