rounding quiz

In the front, we introduced the use of the INT function to construct the rounding function, but sometimes we will encounter more decimal rounding, with the INT function construction will be somewhat laborious, Excel round function can help us. The role of the round function is to return a number that has been rounded off by a specified number of digits. The syntax is "ROUND (number,num_digits)", where numbe

For a powerfulCeil--into a method to take the whole Description float ceil (float value) Returns the next integer not less than value, in which value is entered if there is a fractional part. The type returned by Ceil () is still float, because the range of float values is usually larger than the integer. PHP takes an integer function Example 1. Ceil () example ? PHP echo ceil (4.3); 5 echo ceil (9.999); 10 ?> Floor--The

This article mainly introduces how to implement rounding in php. The example summarizes three common methods for implementing rounding in php, which has some reference value, for more information about php implementation, see the examples in this article. Share it with you for your reference. The specific analysis is as follows: Php provides three rounding met

1. tofixed Method　　The ToFixed () method rounds numbers to a number that specifies the number of decimal digits. For example, if the data Num is reserved for 2 decimal places, it is represented as:toFixed (Num), but its rounding rules differ from those in mathematics, using banker rounding rules, bankers rounding: the so-called banker

Here are a few ways to round decimal values to integers: Math.ceil (), Math.floor (), and Math.Round (). These three methods follow the following rounding rules: math.ceil () performs an upward rounding, that is, it always rounds the value up to the nearest integer; math.floor () performs a downward rounding, that is, it always rounds the value down to the neares

In our day-to-day work, especially in the Excel cell format, we allow the definition of decimal places, but in practice we find that the numbers themselves do not actually achieve rounding. If this rounding method is used, errors often occur in financial operations, which are not permitted by financial operations. As shown in Figure 1,a1:a5 is the original data, B1:B5 is the result of preserving two decima

In the numerical calculation process, often encounter the case of rounding the results, the WPS table provides a rich rounding function, the following we have a big parade of these functions: CEILING Rounds the first parameter value up (in the direction of the absolute value increase) to a multiple of the nearest second parameter. For example, the result of =ceiling (4.42,0.3) is a multiple of 0.3 4.5;=ce

Many people mistakenly treat the math. Round function as a rounding function, and the result is often incorrect. In fact, math. Round adopts the internationally accepted banker rounding method. Banker's rounding (banker rounding)AlgorithmThat is, four homes, six homes, and five shopping cart. In fact, this is also th

确（比如，有的编程语言中提供了专门的货币类型来处理），所以Java使用java.math.BigDecimal专门处理小数精度Constructor Description: BigDecimal(int) 创建一个具有参数所指定整数值的对象。 BigDecimal(double) 创建一个具有参数所指定双精度值的对象。 BigDecimal(long) 创建一个具有参数所指定长整数值的对象。 BigDecimal(String) 创建一个具有参数所指定以字符串表示的数值的对象。usage principle: Initializing decimals must be made with a string, BigDecimal (string), because decimals with double are approximate, not exact values. BigDecimal member Methods add(BigDecimal) 对象自身与参数相加，然后返回这个对象。

I don't know if you think of rounding and rounding, and then think of rounding. Note that this is two concepts. Rounding refers to taking an integer part of a rational number. The rounding mode described here is similar to the internal floating point processing of the cpu. I

The content of this section: PHP, JS small number Rounding Method The first part: 1, discard the fractional part, and keep the whole number of parts Copy Code code example: Php:intval (7/2) js:parseint (7/2) 2, rounding up, with decimals on the integer part plus 1 Copy Code code example: Php:ceil (7/2) Js:Math.ceil (7/2) 3, rounded. Copy Code code example: Php:round (7/2) js:Math.round (7/2) 4,

This article mainly introduces how to implement rounding in php. The example summarizes three common methods for implementing rounding in php, which has some reference value, for more information about php implementation, see the examples in this article. Share it with you for your reference. The specific analysis is as follows: Php provides three rounding met

Reprinted from: http://dlix.bokee.com/5956750.html C #, java, and vbscriptFour Homes, six in five into two (explained below).SQL server uses rounding. C # For example, Math. Round (1.25, 1) = 1.2. In SQL, select round (1.25, 1) returns 1.3. Reference code for rounding in C: For example, if 2.45 is to be rounded to the last decimal place, you can first give 2.45*10, then add 0.5, then get the integer,

0x01In the Java Math class there are three methods for floating-point numbers to take integers, namely ceil (rounding up) floor (rounded down) roundthree methods0x02 ceil upward rounding, after rounding is always larger than the original number.System. out. println (Math.ceil (2.34)); System. out. println (Math.ceil (-2.34));3.0-2.00x03 floor is rounded down and

In the numerical calculation process, often encounter the case of rounding the results, the WPS table provides a rich rounding function, the following we have a big parade of these functions: CEILING Rounds the first parameter value up (in the direction of the absolute value increase) to a multiple of the nearest second parameter. For example, the result of =ceiling (4.42,0.3) is a multiple of 0.3 4.5;=ce

integer.max_value, the result is equal to the Integer.max_value value. parameter: A-floating-point value to be rounded to an integer. returns: The parameter value rounded to the nearest int value. --------------------- 4.3Math.Round (4.3) =4Math.Round (4.4) =4Math.Round (4.5) =5-4.6Math.Round (-4.6) =-5Math.Round (-4.5) =-4Math.Round (-4.4) =-4-4.51 |-4.50-4.494.49 | 4.50 4.51Because it is negative, so the critical point is on the left side of 5, the text of the "

Problem Description:To extract a floating-point (float) integer part, such as "2.1" Into the "2" process; now we give the process a name called "rounding", then itThere are roughly two ways to do this in Python.Notation 1) type conversion:Using explicit type conversions to complete a rounding operationPI = 3.14159print(int (pi)) # 3Notation 2) Round function:PI = 3.14159print(round (PI)) # 3Into the pit

False rounding in PYTHON3: round () Creation time: 2017/12/5 17:08 Cn_simo Label: Python basics, round, rounding first, this is not a bug! when using round (), it is found thatcan be found that there are some numbers that are not really rounded! This is very confusing, check the data found that in the Python2 this is s

Reply content:Because binary floating-point numbers do not solve this problem. First look at a phenomenon that is unrelated to round: >>> def Show(x):... "" prints a number, 20-bit precision "" "... Print(' {:. 20f} '.format(x))...>>> Show(1.5)1.50000000000000000000>>> Show(1.25)1.25000000000000000000>>> Show(1.245)1.24500000000000010658>>> Show(1.45)1.44999999999999995559>>> Show(1.415)1.41500000000000003553Rounding is based on decimal, and there is an error when the binary cannot be

0 reply content: this problem cannot be solved because of the binary floating point number. Let's first look at a phenomenon that has nothing to do with round: >>> Def show (x ):... "print a number, 20-bit precision """... print ('{:. 20f }'. format (x)... >>> show (1.5) 1.50000000000000000000 >>>> show (1.25) 1.25000000000000000000 >>>> show (1.245) 1.24500000000000010658 >>> show (1.45) 1.44999999999999995559 >>> show (1.415) 1.41500000000000003553Rounding is based on decimal, and there is