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Http://www.cnblogs.com/kingwolfofsky/archive/2011/07/21/2112299.html
floating point numbers
1. What are floating point numbers
In the process of computer system development, several methods have been proposed to express real numbers. Typically, for
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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
I. Loss of precision in floating-point calculationsProbably a lot of friends with programming experience are not familiar with this problem: no matter what programming language you use, when you use floating-point data for accurate calculations, you
This paper is derived from quantization, data type, overflow and underflow, and the floating-point number is considered as a quantization method of real field, and the difference between floating-point number, especially irregular floating-point
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Code Restoration Technology
I. Introduction code Restoration
Ii. Data Type representation in code Restoration
1. Integer type
2. unsigned integer
3. signed integer
4. Floating Point Data Type
5.
Calculation of floating-point numbers in PHP and the solution of inaccurate rounding, rounding inaccurate
Comparison of floating-point calculation resultsA floating-point calculation example is as follows:
Copy the Code code as follows:$a = 0.2+0.7;
Let's talk about php floating point exact calculation, php floating point number
Bc is short for Binary Calculator. Bc * function parameters are all operands plus an optional [int scale], such as string bcadd (string $ left_operand, string $
Although almost every processor andProgramming LanguageAll support floating point operations, but mostProgramStaff seldom pay attention to it. This is easy to understand-most of us seldom need non-integer types. In addition to scientific computing
Although almost every processor and programming language supports floating point operations, most programmers seldom pay attention to it. This is easy to understand-most of us seldom need non-integer types. In addition to scientific computing and
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