Recommended 3 articles about floating point number types

Floating point number type of numerical type: In our daily life, there are not only integers, but also decimals. In C#, there are two data types for decimals: (single precision) float and (double precision) double. The difference lies in the value range and precision. The computing speed of the computer for floating point numbers is much lower than the computing speed for integers. The computing speed for double types is lower than the computing speed for floats. If a large number of double precisions are used in the program, Floating-point numbers will occupy more memory units, and the computer's processing tasks will be more arduous. However, the results of double type will be more accurate than float, so we can use it when the accuracy requirements are not very high. float type. Single precision (float) type: The value range is between plus and minus 1.5*10^-45 to 3.4*10^38, and the precision is 7 to 8 digits; Double precision (double) type: The value range is plus or minus 5.0 *10^-324&n

1. C# Learning Diary 06---Floating point type of data type

Introduction: In our daily lives, there are not only integers, but also decimals. In C#, there are two data types for decimals: (single precision) float, (double precision) double .

2. felayman-mysql quick start (1)

Introduction: felayman----mysql quick start (1) Mysql Quick Start Chapter 1: Myslq Data Types Key points in this chapter: 1. Integer type, floating point type, and fixed point type 2. Date and time type 3. String type 4. Binary type integer type Number of type type bytes Unsigned value range Signed value range Tinyint10-255-127-127Smallint20-65535

3. Implementation method of infinite classification and tree forum _PHP

Introduction: Implementation method of infinite classification and tree forum-floating point field sorting method Joe Teng 2005.6.12 I don’t want to discuss other implementation methods here Pros and cons. Since we are using field sorting, we will set up a field named order. The question is, should we use integers or floating point types here? Taking into account the possibility of inserting a new value between two consecutive order values

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