bitwise-operators
Operator precedence (bitwise '&' lower than '==')
In the C programing language, why do the bitwise operators (& and |) have lower precedence than 开发者_运维问答the equality operator (==)? It does not make sense to me.You need to ask Brian Kernig[详细]
2023-02-03 22:26 分类:问答Bitwise conversion of decimal to integer
I don\'t know if this is specif开发者_运维百科ic to JavaScript. var pi = 3.14159265 alert(pi|0) This will output 3.[详细]
2023-02-03 12:08 分类:问答What is the meaning of this pData[1+2*i]<<8|pData[2+2*i] C++ syntax?
what is the meqaning of pData[1+2*i]<<8|pData[2+2*i] where pData[ ] is the array containing BYTE data?[详细]
2023-02-03 09:12 分类:问答Unary NOT/Integersize of the architecture
From \"Mastering Perl/Chapter 16/Bit Operators/Unary NOT,~\": The unary NOT operator (sometimes called the complement operator), ~, returns the bitwise negation, or 1\'s complement, of the value, ba[详细]
2023-02-02 10:18 分类:问答What does "<<" mean in PHP? [duplicate]
This question already has answers here: Closed 12 years ago. Possible Duplicate: Reference - What does this symbol mean in PHP?[详细]
2023-02-02 00:55 分类:问答Bitwise operators - when/how do you use the operators &, |, ^, >> etc?
I know what they do, I just don\'t understand when you\'d get a use for th开发者_如何学Cem..When you need to manipulate individual bits of a chunk of data (like a byte or an int). This happens frequen[详细]
2023-02-01 20:08 分类:问答C question: off_t (and other signed integer types) minimum and maximum values
I occasionally will come across an integer type (e.g. POSIX signed integer type off_t) where it would be helpful to have a macro for its minimum and maximum values, but I don\'t know how to make one t[详细]
2023-01-31 17:22 分类:问答How does the `test` instruction work?
If we have: test dword ptr [eax], 2000h je label1: Is there any value other than 0 in dword p开发者_JAVA技巧tr [eax] that would make the jump take place?Instruction test works like and instruction,[详细]
2023-01-31 08:55 分类:问答Padding bits in unsigned integers and bitwise operations in C89
I have a lot of code that performs bitwise operations on unsigned integers. I wrote my code with the assumption that those operations were on integers of fixed width without any padding bits. For exam[详细]
2023-01-31 08:47 分类:问答why -3==~2 in C#
Unable to understand. Why output is \"equal\" code: if (-3 == ~2) Console.WriteLine(\"equal\"); else Console.WriteLine开发者_StackOverflow(\"not equal\");[详细]
2023-01-31 07:00 分类:问答