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Tag Archive for clangllvmclang++c++23

256bit arithmetic in C++23, Clang-18

I need to use 256bit arithmetic in my C++ code on Mac with arm processor.
According to the accepted answer in this stackoverflow discussion, C++23 has 256bit arithmetic via _BitInt(256) and it has been implemented in Clang-16. I just installed it through brew install llvm and compiling with clang++ outputs