[libc-commits] [libc] [libc] utf8 to 32 CharacterConverter (PR #143973)

[Michael Jones via libc-commits]

https://github.com/michaelrj-google commented:

for constants that are just simple numbers that can be known an compile time, it's better to use `constexpr` instead of `const`.

https://github.com/llvm/llvm-project/pull/143973