metric decimal places

Javascript controls the text box to only enter numbers and decimal places. js text box This article describes how to enter only numbers and decimal places in the Javascript control text box. Share it with you for your reference. The specific implementation method is as follows:Copy codeThe Code is as follows: function

Java retains two decimal places 4 waysMethod One: The Format method of string (recommended)Double F = 111231.5585;System.out.println (String.Format ("%.2f", f));Method Two: The Format method of DecimalFormatDouble F = 111231.5585;DecimalFormat df = new DecimalFormat ("#.00");System.out.println (Df.format (f));Here's what you can do without looking at itMethod Three: The Setscale method of BigDecimalDouble F

The topic requirement is a high-precision division, which requires the retention of n decimal places (rounding), and the display of 0 is removed when the integer part is 0 o'clock1 ImportJava.math.BigDecimal;2 ImportJava.util.Scanner;3 4 Public classBD5 {6 Public Static voidMain (string[] args)7 {8Scanner Scanner =NewScanner (system.in);9 while(Scanner.hasnext ())Ten { OneBigDecim

PHP retains two decimal places and rounded up Copy Code code as follows: $num = 123213.666666; Echo sprintf ("%.2f", $num); PHP retains two decimal places and is not rounded Copy Code code as follows: $num = 123213.666666; Echo sprintf ("%.2f", substr (sprintf ("%.3f", $num), 0,-2); PHP

This example describes how Python discards decimal places through the floor function. Share to everyone for your reference. The specific analysis is as follows: Python can discard decimal places after floating-point numbers through the floor function of the math library Import Math Print (Math.floor (x)) For e

4 methods, all rounded, for example:ImportJava.math.BigDecimal; ImportJava.text.DecimalFormat; ImportJava.text.NumberFormat; Public classFormat {Doublef = 111231.5585; Public voidM1 () {BigDecimal bg=NewBigDecimal (f); DoubleF1 = Bg.setscale (2, bigdecimal.round_half_up). Doublevalue (); System.out.println (F1); } /*** DecimalFormat conversion is the easiest*/ Public voidm2 () {DecimalFormat DF=NewDecimalFormat ("#.00"); System.out.println (Df.format (f)); }

1,Math.Round (0.333333,2);//According to the international standard of Rounding 2, double dbdata=0.335333; String Str1=string.format ("{0:f}", dbdata);//default is to reserve two bits 3, float i=0.333333; int j= (int) (i * 100); i = j/100;4,decimal. Round (decimal. Parse ("0.3333333"), 2) 5, private System.Globalization.NumberFormatInfo NFI = new System.Globalization.NumberFormatInfo (); float test=0.333333

one class file is another Id, to use the decimal point and control the digits of the decimal point, I use the following method: 1. When an attempt is created, round (avg (EXPSCORE) * 1000)/1000 as avg is used to control the number of decimal places; 2. Modify the attributes in the generated ***. hbm. xml file, for exa

1, Math.Round (0.333333,2);//According to the international standard of rounding2.Double dbdata=0.335333;String Str1=string.format ("{0:f}", dbdata);//default is two-bit reservedThere is a similar approach, but it does not advocate:Double D1 = 0.335333;String d2 = D1.ToString ("0.00"); //String d3 = D1. ToString ("F2");D2= "0.33"3.float i=0.333333;int j= (int) (i * 100);i = j/100;4.Decimal. Round (decimal.

In C #, we all encounter this situation where data of the double type needs to be formatted (retain N unvalid numbers) or N as decimal places.Double. tostring ("parameter ");. The following describes several common methods. Double temp = 3.1415926; (F)Fixed Point:String str1 = temp. tostring ("f1"); // returns the result of rounding a decimal number to 3.1. (F)Fixed Point:String str2 = temp. tostring

Description: Only a maximum of six decimal places can be rounded in. Note that you can take the initiative to go to 0 at the end of the decimal point (for example, 1.20f is considered as: 1.2f ), if the input decimal point is 2.0f, 0 is returned as an integer; Resolved issues: Rounding the mathf. Round Function in

Tags: Io ar OS for on new as res text1. Math. Round (0.333333, 2); // follow the rounding international standards2,Double dbdata = 0.335333;String str1 = string. Format ("{0: f}", dbdata); // retain two digits by default3,Float I = 0.333333;Int J = (INT) (I * 100 );I = J/100;4,Decimal. Round (decimal. parse ("0.3333333"), 2)5,Private system. Globalization. numberformatinfo NFI = new system. Globalization. n

Recently, I found a Bug in my project and killed the process. I checked it and found it was the most inconspicuous place. I will record it here. First look at the following code # Include The running result is as follows: In the code, sprintf (aa, "% 0. * f ", f); you want to output a floating point number to a string and control the number of digits after the decimal point. However, if you do not specify the number of

This question should be the simplest one except the 1000 question, that is, the average value of 12 months, but the output must retain two decimal places. # Include To describe the usage of setprecision: Cout In this way, the valid number is 2 digits, and fixed is the last two digits of the decimal point.

Problem: Multiple ways to format data in JS to preserve two-bit decimal functionsThe best way:Keep two bits like that.var a = 9.39393;Alert (a.tofixed (2));DescriptionAlert (number.tofixed (9.39393));The return is 9.39.However, only ie5.5 versions are supported.Other methods:Method One:function Roundfun (numberround,rounddigit)//round, reserved bits of rounddigit{if (numberround>=0){var tempnumber = parseint ((Numberround * MATH.POW (10,rounddigit) +0

in Java, when two integers are divided, because the number after the decimal point is truncated, the result of the operation will be an integer, and if you want to get the result of the operation as a floating point, you must cast both integers one or both to the floating-point numbers. For example: (float) A/b///convert one of the integers to a floating-point number and divide it with another integer A /(float) b (float) A/(float) b//convert two

Determines whether a floating-point type+ (BOOL) Ispurefloat: (nsstring*) string {nsscanner* scan = [Nsscanner scannerwithstring:string];float Val;return [scan scanfloat:val] [scan isatend];}Limit the number of input bits in textfiledif ([string isequaltostring:@ "]) {return YES;}NSString *text = [Textfield.text stringbyreplacingcharactersinrange:range withstring:string];if ([Mytool Ispurefloat:text]) {if ([text Doublevalue] Two digits after the decimal