what floating point

Http://edu.eoe.cn/online classroom Yesterday I saw a post about a few simple floating-point operations, and the computer would be wrong.Let me introduce it to you :'RunCode: System. Out. println (0.05 + 0.01); System. Out. println (1.0-0.42);

If you are using PHP's +-*/to compute floating-point numbers, you may encounter problems with computed errors, such as Echo Intval (0.58*100), which prints 57 instead of 58, which is actually a bug where the computer's underlying binary cannot

A, PHP floating point accuracy loss problem Let's look at the following code: Copy Code code as follows: $f = 0.57; Echo intval ($f * 100); 56 The result may be a little surprising to you, PHP follows IEEE 754

If you use PHP +-*/to calculate the floating-point number, you may encounter some errors in the calculation results, such as Echo Intval (0.58*100), will print 57, instead of 58, this is actually the bottom binary system of the computer can not

Floating point number in the conversion process will have errors, so the floating-point number can not directly compare its size, generally in comparison with two floating-point number is compared between their difference, if the difference between

To attract everyone's attention, let's take an example before introducing floating point numbers and fixed points: mysqlCREATETABLEtest (c1float (), c2decimal (); QueryOK, 0 rowsaffected (0.22sec) mysqlinsertinto... to attract everyone's attention,

Go provides two size floating-point numbers, float32 and float64. Their arithmetic specifications are defined by the IEEE754 International Standard, and modern CPUs have implemented this specification.The range of floating-point numbers can be

Summary of JavaScript floating-point number and operation precision AdjustmentJavaScript has only one numeric type number, and all the numbers in JavaScript are represented in the IEEE-754 standard format. The accuracy of floating-point numbers is

Java, as a strongly typed language, means that each variable will have a specific type, there are 8 basic types of Java, there are 4 types of integers (byte, short, int, long), two floating-point types (float, double), 1 character types (char) and a

In the operation of floating-point numbers in PHP, a hole was encountered, which did not get the expected result, as follows: $a = 69.1;$b = $a *100;$c = $b-6910; What do you think the value of $c is? The value $c output is -9.0949470177293E-13.

The percentage of CPU, memory usage of the process seen through the top command is a floating-point number, and I need to process it while writing the script, so I learned a few things and summarized as follows. In fact, the Shell (here is bash)

The precision value of a floating-point number in PHP is used to control the output of the floating-point number. Can be understood as the control of the output of the number of digits, the difference in precision, see the output may also be

Write a function that converts a numeric string to a number corresponding to the string (including a positive floating point, a negative float)//For example: "12.34" returns 12.34. " -12.34 " back to 12.34#include #include #include double

Detailed description of precise floating point operations in python, and detailed description of python point operations Why do floating point numbers lack accuracy? Before starting this article, let's talk about why floating point numbers lack

Next, I will introduce you to the problem of floating point number processing in Php. If you encounter these problems during usage, let's take a look at them, I hope this article will be helpful to you. Next I will introduce you to the question

PHP floating point knowledge. PHP floating point number knowledge this article mainly introduces you should know about PHP floating point numbers. This article describes PHP floating point numbers, critical values of PHP numbers, precision loss, and

Summary: Learn how to optimize floating-point code using the floating-point semantics management method of Microsoft Visual C + + 2005 (formerly known as Visual C + + "Whidbey"). Create a quick program, while ensuring that security optimizations are

In php, we usually cannot get the desired result for floating-point computing. Why, next, we will analyze the problem and organize some useful examples for you. In php, we usually cannot get the desired result for floating-point computing. Why, next,

Recently in the C + + socket and the Java Socket Communication program, involving the transmission of integer floating point number, need to restore data from a byte array, check some information, summarized as follows1. Machine representations of

This is the so-called ieee754 standard, which is also the Standard for most hardware-stored floating point numbers. A single-precision floating point occupies 4 bytes, indicating that the range is: When the negative number is-3.402823e38