metric decimal places

Text boxes that can only enter numbers and decimal placesHTML code > You can only enter a text box for numbers and decimals: onkeyup= "Value=value.replace (/[^d.] /g, ') '> decimal point judgment1 The first input must be a number, not a decimal point. For example. 1112 cannot exist multiple. Continuous, only one. For exa

This article will use PHP to round up the numbers to keep n decimal digits, as well as using PHP for the number of rounding method to do a small sum. (1) PHP retains three decimal places and rounded The code is as follows Copy Code $num = 0.0215489;Echo sprintf ("%.3f", $num); 0.022 (2) PHP keep three

1. functionThe double value in the program is accurate to two digits after the decimal point. Can be rounded or truncated directly.For example: Enter 12345.6789, the output can be 12345.68 or it can be 12345.67. As to whether rounding is required, parameters can be used to determine (Roundingmode.up/roundingmode.down, etc.).2. Implementing the CodePackage Com.clzhang.sample;import Java.math.bigdecimal;import Java.math.roundingmode;import Java.text.de

Label:Source: The item will be taken out of the database Amount (unit), the third party needs the amount of units in yuan, here is related to the question of retaining 2 decimal places First, the format of the function To_char Here I summarize these several to_char (int, text),to_char (float, text),to_char (numeric, text) The function of these functions is to put the input type, according to the forma

Private float Convertfloat4se5ru (float flotvalue) {int ivalue = (int) math.round (Flotvalue * 10000); Two digits before the decimal point are moved forward and roundedFlotvalue = (float) (ivalue/10000.00f);return flotvalue;}Disclaimer: The above text is "Wuhan Han Code Technology Co., Ltd." original, reproduced when must be marked the source.Technology sharing. To communicate with you and me. Progress together!Www.hanma-scan.com WinCE C # Programm

This article describes how to format the amount with js and set the number of decimal places to be retained. For more information, see The Code is as follows: // Formatted amount s is the parameter to be formatted (float type), and n is the number of digits reserved after the decimal pointFunction formatMoney (s, n ){N = n> 0 n S = parseFloat (s + ""). rep

1. Page Operation formatting numbersOn the page sometimes use the number of operations, after the operation will appear 1.5999999999999 such a long number, need to format numbers, such as the retention of two valid digitsFirst import this label @ taglib URI = " http://java.sun.com/jsp/jstl/fmt " prefix = " FMT " %>Then use the label languagetype= "number" value= "${cost-beannums}" pattern = "0.00" maxfractiondigits = "2" />2. Pass the value to the page before formatting the numberDecimalFormat

/** Processing a string with a number plus a decimal point, preceded by 0, leaving two bits. There is a circular interception method on the Internet, if the number is too long and the memory is wasted, this method is designed on the basis of optimized memory.*/-(nsstring*) Getthecorrectnum: (nsstring*) tempstring{First judge is not. Is. Complement 0if ([tempstring hasprefix:@ "."]) {tempstring = [NSString stringwithformat:@ "0%@", tempstring];}Calcula

This article introduces the content is about PHP into a rounding, rounding, retain two decimal places, and so on digital processing method Daquan, has a certain reference value, now share to everyone, there is a need for friends can refer to PHP takes integer functions commonly used four methods, the following collection of four functions, often used to take the whole function, a small sum today! Actually

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In the PY application there are many numbers in the results of the operation, it is inevitable that the division (such as unit conversion, etc.), but the integer after the operation will only return an integer, the general results need to be accurate to the next two bits, at this time you can use the following two ways to solve:1. Convert any integer that participates in the operation to the float type explicitly as follows:def convert_unit (num_size): Return round ((float (num_size)/1048576), 2

The Java backend retains two decimal places1. (double) (Math.Round (sd3*10000)/10000.0);this keeps the 4-bit( Double) (Math.Round (sd3*100)/100.0);this keeps the 2 bits.2. Another approachimport Java.text.DecimalFormat;DecimalFormat df2 = new DecimalFormat ("###.00");DecimalFormat df2 = new DecimalFormat ("###.000");System.out.println (Df2.format (Doube_var));The first one is 2 bits and the second is 3 bits.3 new JDKString.Format ("%10.2f%%", Doube_va

, otherwise the rounding behavior is the same as Round_down . Note that this is the rounding pattern that most of us have learned in primary school. Round_half_down Rounds the nearest number to the rounding mode that is rounded up if the distance to the two adjacent numbers is equal. If part > 0.5 is discarded, the rounding behavior is the same as round_up , otherwise the rounding behavior is the same as Round_down .

The following processing results are rounded:var num =2.446242342= num.tofixed (2); // output is 2.45Not roundedThe following processing results are not rounded:First, put the decimal-side integer First:Math.floor (15.7784514000 *)/+/ / output is 15.77The second, as a string, uses a regular match:Number (15.7784514000.toString (). Match (/^\d+ (?: \. \d{0,2})) // output result is 15.77, cannot be used for integers such as 10 must be written as

Tags: reserved sel turn Select End--Locate UML ConvertSometimes you need to reserve a specified number of digits for a specific number that contains a decimal point, such as "123.123600". This is implemented as a function in the database as follows: Use [Database name] GO /** * * * object:userdefinedfunction [dbo]. [Avglimit] Script DATE:2016/12/29 11:30:44 * * * * **/ SETAnsi_nulls on GO SETQuoted_identifier on GO Create function [dbo].[Avglimit]

Scenario 1:C # retains 2 decimal places. ToString ("F2") is OK, but if the number is three digits behind the decimal point such as 1.253, then the conversion will become 1.25. Can you just keep it to the last place, not 0?By default, 2 bits are reserved, and if there are really 3 decimal

No selectLEN (CAST (99.9999-floor (99.9999) ASVARCHAR)-2 No select LEN (CAST (99.9999-floor (99.9999) as varchar)-2 Number of digits with positive decimal places --> $velocityCount--> --> select LEN(CAST((99.9999-floor(99.9999)) AS VARCHAR))-2

1 import Java.math.BigDecimal;2 import Java.text.DecimalFormat;3 import Java.text.NumberFormat;4 Public classFormat {5 Doublef =111231.5585;6 Public voidM1 () {7BigDecimal BG =NewBigDecimal (f);8 DoubleF1 = Bg.setscale (2, bigdecimal.round_half_up). Doublevalue ();9System. out. println (F1);Ten } One /** A * DecimalFormat conversion is the easiest - */ - Public voidm2 () { theDecimalFormat DF =NewDecimalFormat ("#.00"); -System.

Question link:Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 1753 Calculate the sum of two long decimal places # Include

Double mynumber = 321.4321; String mystring = string. Format ("{0: 0. ##}", mynumber ); Console. writeline (mystring ); String operation Only two decimal places are allowed. Double d1 = 3.1415926;String strd1 = d1.tostring ("F2 ");If there are three digits, It is F3.String STR = "123abc456 "; Int I = 3; 1. Take the first I character of the string. STR = Str. substring (0, I); // or str = Str. Remove (I, str