[libc-commits] [libc] [libc] added rest of yaml files for new headergen (PR #96977)

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RoseZhang03 wrote:

> The contents of the files look good, but I'm not sure why some of the yaml files' names start with a standard and some don't. Also why are the yaml files in two different folders?

Good point. I will move the other combined files into the general yaml folder in my next patch. They were originally placed in different folders for organizational purposes as we were combining functions from different standards. Most of these are header files with functions in only one standard.

https://github.com/llvm/llvm-project/pull/96977