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Why is x86 ugly? Why is it considered inferior when compared to others? [closed]
...on is often to look at the flags register to check for overflow, sign bit, etc. If there's another add after that, it's very difficult to tell whether it's safe to begin execution of the 2nd add before the outcome of the 1st add is known.
On a RISC architecture, the add instruction would specify th...
PHP操作MongoDB时的整数问题及对策 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
PHP操作MongoDB时的整数问题及对策本文所说的整数问题，其实并不是MongoDB的问题，而是PHP驱动的问题：MongoDB本身有两种整数类型，分别是：32位整数和64位整数，但旧版的PHP...本文所说的整数问题，其实并不是MongoDB的问题，而是P...
Are Java static calls more or less expensive than non-static calls?
...( duration, test );
printStream.printf( "%15s | %10d\n", test.getClass().getSimpleName(), iterations );
}
}
long runTest( int duration, Test test ) throws Exception
{
test.terminate = false;
test.count = 0;
Thread thread = new Thread( test );
...
How to run functions in parallel?
...same time" and thinking you can is just plain wrong. Depending on how many cpus you have, the load of the machine, the timing of many things happening on the computer will all have an influence on the time the threads/process start. Also, since the processes are started right after creation, the ove...
OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
OS X10.9 环境下部署 QT5.3.1 常见的编译问题出于本身对UNIX系统的好奇，以及身边一群对 Swift 语言各种推崇的苹果教徒的影响，这几天折腾起 MAC OS X来，体验下这个被无数开发者...
出于本身对UNIX系统的好奇，以及身边一群对 Swift ...
SSH to Vagrant box in Windows?
...: 127.0.0.1
Port: 2222
When you connect(Terminal Screen):
User: vagrant
Passwd: vagrant
Before you try to connect, verify your VM using cmd.exe:
vagrant status
If it is down use:
vagrant up
share
|
...
In Windows cmd, how do I prompt for user input and use the result in another command?
...ping? Like if you wanted to do a: set /p id=Enter ID:\r\n set /p pw=Enter Passwd: and didn't want the password text to show in the window, let alone, show in the "DosKey" command buffer? I've tried several different ways, and haven't been able to find a way to do this, outside of writing a little ...
CPU acceleration status: UT feature disabled in BIOS/UEFI - App Invent...
安卓模拟器启动报错：
CPU acceleration status: UT feature disabled in BIOS/UEFI
86_64仿真当前需要硬件加速CPU加速状态：在BIOS/UEFI中禁用了UT功能
需要在主板中开启硬件加速功能，具体如何开启待整理，或者可以直接问问 deepseek...
Easily measure elapsed time
...ompile time you can parametrize the timing type (milliseconds, nanoseconds etc).
Thanks to the review by Loki Astari and the suggestion to use variadic templates.
This is why the forwarded function call.
#include <iostream>
#include <chrono>
template<typename TimeT = std::chrono::...
How do function pointers in C work?
...multiple versions of some functions to take advantage of SSE, popcnt, AVX, etc. At startup, set your function pointers to the best version of each function for the current CPU. In your other code, just call through the function pointer instead of having conditional branches on the CPU features eve...