In the blog post, the author explores different implementations of the clamp function in C++. They compare the efficiency of using ternary operators, the std::min and std::max functions, and the std::clamp function. The author discovers that the std::min and std::max implementation produces the best code, while the std::clamp implementation is not very efficient. They also provide a line-by-line breakdown of the fastest implementation and explain how it works. The author conducted the experiments using different versions of GCC and Clang, noting that the assembly generated by std::clamp still lacks efficiency.
https://1f6042.blogspot.com/2024/01/stdclamp-still-generates-less-efficient.html