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Re:Building Your Own Efficient uint128 in C++ by PhilipTrettner on Friday February 06, 2026 @08:37AM (#46912678)
See https://godbolt.org/z/bYb7a38dG

It's basically: long* and long long* (the pointer types) are not compatible, and uint64_t is the "wrong" typedef on linux, or at least inconsistent with the way the intrinsics are defined.

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