bit-manipulation

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Querying a bitmap distinguishing 0-values

I\'m writing a piece of software that will process huge amounts of data. For memory efficiency, some of the fields in the records being processed are stored in a single bitmap.[详细]

2023-03-27 04:17 分类：问答
Bit Shifting with a Count greater than 30

I am confused on the Bit Shift Operator开发者_运维知识库s (in c#). Can you shed light on why the value of \"a\" below returns \"1\" instead of \"4294967296\":[详细]

2023-03-26 20:07 分类：问答
Converting code from C to Java: shifts

I have some C code, where an unsigned integer is shifted by a (signed) variable. For example, 1u << i;开发者_StackOverflow中文版[详细]

2023-03-26 18:11 分类：问答
Clarification in adding a two numbers without using any arithmetic operators

I understood how this solution works. int add_no_arithm(int a, int b) { if (b == 0) return a; int sum = a ^ b; // add without carrying[详细]

2023-03-26 16:37 分类：问答
C++: How do I cast an int to an unsigned long and not change any bits?

C++: How do I cast an int to an unsigned long and not change any bits? I want to pack and unpack values into memory. The word size is 64 bits.[详细]

2023-03-26 11:57 分类：问答
Breaking up a LPARAM variable & looking at groups of bits

I know that a LPARAM variable has certain bits set(inside it) that identify information such as long key presses & etc. when I receive a WM_KEYDOWN event.[详细]

2023-03-26 07:05 分类：问答
Enum bit fields that support inheritance

I apologize for the Title of this Question, but I couldn\'t think of a better way to describe what I\'m trying to accomplish..[详细]

2023-03-26 03:50 分类：问答
Bit manipulation of chars in Java or C?

I am a student trying to implement the DES algorithm. I have a choice of 2 languages: C & Java. I did understand the algorithm, but am stuck at the very beginning as to manipulation of the key.[详细]

2023-03-25 23:45 分类：问答
Change a bit of an integer [duplicate]

This question already has answers here: How do I set, clear, and toggle a single bit? (27 answe开发者_JAVA百科rs)[详细]

2023-03-25 15:00 分类：问答
First position of true value(1) from a bit pattern

For example, if the pattern is as follows: bit[10010][1011][1000] position5432143214321 result214 I want to get the result from right to left po开发者_运维知识库sition as [2] [1] [4]If I understand[详细]

2023-03-25 08:22 分类：问答