# round numbers to 1 decimal place

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### PHP Rounding Accurate decimalplace and rounding _php tutorial

PHP to take the decimal place function has sprintf,ceil,floor,round and so on functions to achieve rounding, let's look at the specific example. This article will use PHP to round up numbers to preserve n decimal places, and a small summary of how

### Representation accuracy of IEEE 754 floating point numbers

Representation accuracy of IEEE 754 floating point numbers Preface I have seen many programmers on the Internet have many questions about floating-point number accuracy. I posted a post on the Forum and asked many enthusiastic people to answer the

### In-depth introduction to floating point numbers

Directory 1. What is a floating point number? 2. IEEE floating point number 3. Transformation between a real number and a floating point number 4. Special values 4.1. Nan 4.2. Infinite

### Numbers, cardinality and representations

Numbers, cardinality and representations integerIntegers are these familiar numbers ...,-1, 0, +1, +2, .... Integer values are also referred to as ' complete ' and are divided into positive numbers (1 to infinity), negative numbers (-1 to

### Calculate the E value using a decimal array (answers to the ZOJ 1,113rd question)

Http://acm.zju.edu.cn/show_problem.php? Pid = 1113 is as follows: according to the formula E = 1/0! + 1/1! + 1/2! + 1/3! +... + 1/n! Calculate e. The number of decimal places required for the output (9 digits ). The question is intuitive, and the

### Why doesn't Python solve the "bug" Rounding (round)?

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(

### Why does Python not solve the "bug" of rounding (round "?

Php Chinese network (www.php.cn) provides the most comprehensive basic tutorial on programming technology, introducing HTML, CSS, Javascript, Python, Java, Ruby, C, PHP, basic knowledge of MySQL and other programming languages. At the same time,

### Why does Python not solve the "bug" of rounding (round "?

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 }'.

### Use of asp Fix, Int, Round, and CInt Functions

Fix (number) and Int (number) are both integer parts of the returned number. When number is positive, the two return values are the same. For example, Fix (3.6) = 3, Int (3.6) = 3. When number is a negative number, the Fix directly removes the

### Why is the decimal calculation of Lua very accurate, and the python,javascript of these languages is often inaccurate?

Is the result of LUA calculation, you can see the result is very accurate. Is the result of Python3 calculation, you can see that the calculation results are inaccurate: The decimal calculation in JavaScript is not accurate, see this problem Why are

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