[libc-commits] [libc] [llvm] [reland][libc][NFC] Use user defined literals to build 128 and 256 bit constants (PR #81998)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

> > Fix for platforms where uint64_t is not available
> 
> What platforms are those?

https://github.com/llvm/llvm-project/pull/81882 mentions arm32, but I see `uint64_t` defined in `<stdint.h>`. https://godbolt.org/z/bWqbPsEbE

https://github.com/llvm/llvm-project/pull/81998