metric decimal places

Write a format that uses JS regular checksum to retain up to two decimal places today.A =/^\d+|\d+\.\d{1,2}$/;Test A.test (1.222);Result: TrueOnce blindfolded, how can, finally looked for a long time, originally need to put ^ and $ in the middle of the format wrapped upA =/^ (\d+|\d+\.\d{1,2}) $/;Test A.test (1.222);Result: falseParse: Match ^\d+ or \d+\.\d{1,2} if not wrapped in parentheses1.222 matches th

Javascript performs the product operation of floating point numbers, and multiple decimal places may occur.This is because the floating point number is converted into a binary number before the operation, but some decimals have an infinite loop after the binary encoding, resulting in an error in the calculation, similar problems occur in other languages.For the reason, refer to Baidu:For example: 1038.1-100

Android EditText retains two decimal places, androidedittext Double d = 3.1465926; String result = String. format ("%. 2f", d); System. out. println (result ); Android uses EditText as the amount input box to keep the minimum to the minute, that is, keep the two decimal places in it. First, set android: numeric =

Packagecom.clzhang.sample;ImportJava.math.BigDecimal;ImportJava.math.RoundingMode;ImportJava.text.DecimalFormat;ImportJava.text.NumberFormat; Public classDoubletest {/*** Keep Two decimal places, rounding up an old-fashioned way *@paramd *@return */ Public Static DoubleFormatDouble1 (Doubled) {return(Double) Math.Round (d*100)/100; } /*** The BigDecimal class provides operations for arithmetic, s

Directly on the code:DOCTYPE HTML>HTMLLang= "en">Head> MetaCharSet= "UTF-8"> title>Titletitle>Head>Body>inputtype= "text"name= "Je"onblur= "Clearnonum (this)"/>YuanScripttype= "Text/javascript"> functionClearnonum (obj) {obj.value=Obj.value.replace (/[^\d.]/G,""); //clear the numbers and. Characters outside ofObj.value=Obj.value.replace (/\. {2,}/G,"."); //keep only the first one. Clear redundantObj.value=Obj.value.replace (".", "$#$"). Replace (/\./G,""). Replace ("$#$", "."); Obj.valu

Oracle functions for processing decimal digits ()1. Take the rounded decimal placesSelect round (1.2345, 3) from dual;Result: 1.2352. retain the two decimal places.Select trunc (1.2345, 2) from dual;Result: 1.23 Select trunc (1.2399, 2) from dual;Result: 1.233. Take an integerReturns the largest integer greater than or equal to x:SQL> select ceil (23.33) from dua

[self. btnEcosettitle: [nsstring stringwithformat:@ "%0.1f", model. targettemperature ]forstate:uicontrolstatenormal];float floatvalue=123.0000nsstring *strvalue=[nsstring stringWithFormat:@ "%0.2f",floatvalue];no way to intercept characters, take two decimal places to get 123.00Requires n digits after the decimal point to%0.nf Copyright NOTICE: This article fo

This article mainly introduced Python through the floor function discard the decimal place method, the example analyzes the Python floor function function and the use skill, needs the friend to be possible to refer to under This example describes how Python discards decimal places through the floor function. Share to everyone for your reference. The specific an

Someone asked JavaScript how to intercept decimal places and rounding them out. This is a very common JS technology. Many new users may encounter this problem, so I sorted out the post, for new users. 1. Round MethodPurpose: return the nearest integer to the given numeric expression.Syntax: Math. Round (number). The required number parameter is the value to be rounded to the nearest integer.Note: If the

1. Only require the retention of n bits not four 5 into float f = 0.55555f;int i = (int) (f * 100);f = (float) (i*1.0)/100;2. Keep n bits, rounded. Decimal d= Decimal. Round (decimal. Parse ("0.55555"), 2);3. Keep n-bit rounding Math.Round (0.55555,2)4, keep n bits rounded double dbdata = 0.55555; String str1 = Dbdata. ToString ("F2");//fn reserved n bits, rounde

0 = Tristatefalse-false Useparfornegnum Optional. Indicates whether negative values are placed in parentheses. -2 = tristateusedefault-Use the settings in the computer's regional settings. -1 = Tristatetrue-true 0 = Tristatefalse-false Groupdig Optional. Indicates whether numbers are grouped using the number grouping symbols specified in the computer's regional settings. -2 = tristateusedefault-

Title DescriptionDescriptionLeave two decimal places to output a floating-point number.Enter a descriptionInput DescriptionA floating-point number. Double in rangeOutput descriptionOutput DescriptionTwo-bit fractional output reservedSample inputSample Input11Sample outputSample Output11.00Data range and TipsData Size HintC + + with printf ("%.2lf", a);Pascal with Writeln (A:0:2);For both C + + and Pascal u

public static void Main (string[] args) { //1. First multiply and then round, then divide; Double d = 62.31060027198647; Double D2 = Math.Round (d*100)/100.0; System.out.println ("Divide by math": "+ D2); 2. Rounding with the number of decimal places is accomplished by BigDecimal's Setscale (), which is converted to a BigDecimal object. Below this feasible

Php keeps two decimal places and rounding themCopy codeThe Code is as follows:$ Num = 123213.666666;Echo sprintf ("%. 2f", $ num ); Php keeps two decimal places and does not roundCopy codeThe Code is as follows:$ Num = 123213.666666;Echo sprintf ("%. 2f", substr (sprintf ("%. 3f", $ num), 0,-2 )); Php returns an intege

This article mainly introduces the implementation of JavaScript to preserve two decimal places of several methods, if the number of the original decimal places less than two, then the lack of automatic 0, interested in the small partners can refer toThe first method: The JavaScript implementation retains a two-bit

SELECT count (expscore) as count, sum (expscore) as sum, max (expscore) as max, min (expscore) as min, round (Avg (EXPSCORE) * 1000)/1000 as avg, a. EXPACTID, B. teachercode, B. expname, c. classid, a. scoresubmit, a. scoreverify, c. schoolid FROM expscore a, EXPACTIVATED B, schoolmajorclass c Where a. expactid = B. expactid and B. schclassid = c. schclassid Group by a. EXPACTID, B. teachercode, B. expname, c. classid, a. scoresubmit, a. scoreverify, c. schoolid This is an SQL statement created

JS in the tofixed (n) method to round the number to the number of the specified number of decimal digits, Note: This method can only be used for data type numbers, including Float,int. For example:123.12345.toFixed (2); "123.12" divide the data by using a single statement like this:. Replace (/\d{1,3} (? = (\d{3}) + (\.\d*)? $)/g, ' $, '). Note: thereplace () method can only work on string types , and our team data is usually divided by the number of

Today when you make a Birt report, you want to display a list of percentages of data, but for some special reasons, you cannot use the percent style, which means that if the data is 0.9538, it cannot be displayed as a "95.38%" style and must be displayed as "95.38".To start with JavaScript's built-in function, Math.Round (), Math.Round () can only be displayed as integers, not decimals.Again online search, or use Math.Round (), written math.round (x*100)/100, of course I want to Math.Round (x*10

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));

Package com.swift;Import Java.util.Scanner;public class Purchasetaxdecimalstwo {public static void Main (string[] args) {Scanner scan=new Scanner (system.in);//Scan Workbench InputDouble purchaseamount=scan.nextdouble ();//Enter a value to assign the purchase amount variableSystem.out.println (Purchaseamount);Double taxrate=0.06;//tax RateDouble tax;tax=purchaseamount*taxrate;//Tax Multiple decimal placesSYSTEM.OUT.PRINTLN (tax);SYSTEM.OUT.PRINTLN ((i