LLVM libc's decimal float conversion is based on Ulf Adams' Ryu Printf algorithm (one of the algorithms mentioned in the article). If you're interested in this area, you can look at the code, https://github.com/llvm/llvm-project/blob/main/libc/src/__su... and patches are always welcome :-)
cf. Microsoft's attempt to contribute MSVCS's Ryu float to_chars implementation to LLVM, with review comments from Ulf Adams: https://reviews.llvm.org/D70631