bit-shift

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x86 left shift arithmetically overflow control

Do you know any way to ef开发者_StackOverflow中文版ficient check if overflow/underflow occurs on x86 left shift arithmetically?A good option is to perform an arithmetic shift right after the shift lef[详细]

2023-04-04 23:52 分类：问答
Bit shifting number gives wrong output `std::cout`

unsigned int command = 4; cout << command; command = (command << 1); cout << command; command 开发者_开发百科= (command << 1);[详细]

2023-04-04 01:50 分类：问答
How to shift bits in a color (hex value)

I have the following hex value store 开发者_如何学Goin a variable: 0x04a8f5 I want to convert the value to:[详细]

2023-04-03 18:56 分类：问答
Scala BitSet and shift operations

I\'m looking for a way to represent a set of integers with a bit vector (which would be the characteristic function of that set of integers) and be able to perform bitwise operations on this set.[详细]

2023-04-03 03:03 分类：问答
Problem with Bitwise Barrel Shift Rotate left and right in C#

In C++ I have code like this. static UInt32 rol(UInt32 value, UInt32 bits) { bits &= 31; return ((value << bits) | (value >> (32 - bits)));[详细]

2023-04-02 17:52 分类：问答
Python Bitshift 32 Bit Constraint [duplicate]

This question already has an answer here: Closed 开发者_Python百科11 years ago. Possible Duplicate:[详细]

2023-03-31 10:43 分类：问答
unexpected behavior of bitwise shifting using gcc

I have a test program like this: int main() { unsigned n = 32; printf(\"ans << 32 = 0x%X\\n\", (~0x0U) << 32);[详细]

2023-03-31 08:32 分类：问答
Bitwise permutation of multiple 64bit values in parallel / combined

This question is NOT about \"How do i bitwise permutation\" We now how to do that, what we are looking for is a faster way with less cpu instructions, inspired by the bitslice implementation of sboxes[详细]

2023-03-29 04:28 分类：问答
implementing subtraction with bitwise shifts and increments

Is there an algorithm that can be use to subtra开发者_StackOverflow社区ct 1 from a number using only increments (++ in C) and left bitwise shifts (<< in C) ?[详细]

2023-03-29 00:55 分类：问答
Bit shifting coding efficiency (i.e. neat tricks)

I\'m working on a Objective-C program where I\'m getting bitfields over the network, and need to set boolean variables based on those bits.[详细]

2023-03-28 06:57 分类：问答