C/C++开发问题

Is it legal for a C++ optimizer to reorder calls to clock()?(C++ 优化器重新排序对时钟()的调用是否合法?)
Fastest implementation of sine, cosine and square root in C++ (doesn#39;t need to be much accurate)(C++ 中正弦、余弦和平方根的最快实现(不需要太准确))
Coding Practices which enable the compiler/optimizer to make a faster program(使编译器/优化器能够制作更快程序的编码实践)
Get sum of values stored in __m256d with SSE/AVX(使用 SSE/AVX 获取存储在 __m256d 中的值的总和)
Is std::ifstream significantly slower than FILE?(std::ifstream 是否比 FILE 慢得多?)
Branchless code that maps zero, negative, and positive to 0, 1, 2(将零、负和正映射到 0、1、2 的无分支代码)
Loop with a zero execution time(执行时间为零的循环)
std::vector reserve() and push_back() is faster than resize() and array index, why?(std::vector Reserve() 和 push_back() 比 resize() 和数组索引快,为什么?)
List of common C++ Optimization Techniques(常用 C++ 优化技术列表)
Is a logical right shift by a power of 2 faster in AVR?(在 AVR 中,逻辑右移是否快了 2 的幂?)
how to optimize matrix multiplication (matmul) code to run fast on a single processor core(如何优化矩阵乘法 (matmul) 代码以在单个处理器内核上快速运行)
Move or Named Return Value Optimization (NRVO)?(移动或命名返回值优化 (NRVO)?)