counting the number of 1-bits
Chapter 5. Counting Bits - Hacker’s Delight, Second Edition [Book] (oreilly.com)
The IBM Stretch computer (about 1960) had a means of counting the number of 1-bits in a word... sometimes called population count
去掉查表法和用VPOPCNTDQ指令，还有n种方法：
Population Count - Chessprogramming wiki
单周期指令... _mm_popcnt_u32(num)... __builtin_popcountll()... 在 ARM 中，也有类似的指令... 经典的面试题目，在实际中也有应用，详情请看：
Population Count算法 · 大专栏 (dazhuanlan.com)
-msse3和__builtin_popcount编译通过了。ll是long long的缩写，SSE 4比SSE 3支持更长的寄存器。
bss segmentUsually refers to a memory area used to store uninitialized (or initialized to 0) global variables in the program.
The size of the BSS segment required for operation is recorded in the target file, but the BSS segment does not occupy any space in the target file.
The term BSS (Block Started by Symbol) was originally a pseudo-instruction in the UA-SAP assembler (United Aircraft Symbolic Assembly Program) to reserve a memory space for symbols. The assembler was developed by United Airlines for the IBM 704 mainframe in the mid-1950s.
和7
【推荐】国内首个AI IDE，深度理解中文开发场景，立即下载体验Trae
【推荐】编程新体验，更懂你的AI，立即体验豆包MarsCode编程助手
【推荐】抖音旗下AI助手豆包，你的智能百科全书，全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell：AI 加持，快人一步
· TypeScript + Deepseek 打造卜卦网站：技术与玄学的结合
· Manus的开源复刻OpenManus初探
· 三行代码完成国际化适配，妙~啊~
· .NET Core 中如何实现缓存的预热？
· 阿里巴巴 QwQ-32B真的超越了 DeepSeek R-1吗？
2021-12-13 一个超简单的Microsoft Edge Extension, 已发布到Microsoft Store
2021-12-13 电脑下象棋资源微全
2021-12-13 欧拉计划
2021-12-13 advocate及律师的7种叫法
2021-12-13 A Child's History of England.56