[libc-commits] [libc] [libc][stdfix] Generate stdfix.h header with fixed point precision macros according to N1169 standard, and add fixed point type support detection. (PR #81255)

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lntue wrote:

> Perhaps we should add some kind of documentation that we support this, though it is just an extension as it hasn't been ratified. We should also document what our policy is wrt support for such extensions. For instance, we should reserve the right to remove this header and break the ABI for this (for instance, in case this does ultimately get accepted, though with changes).

I added a documentation page for `stdfix`.

https://github.com/llvm/llvm-project/pull/81255