[libc-commits] [libc] [libc] Provide isnan, isnanf and isnanl functions (PR #96008)

[via libc-commits]

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@@ -17,4 +17,6 @@
 
 %%public_api()
 
+#define isnan(x) __builtin_isnan(x)
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lntue wrote:

Does it mean that we still define `isnan` macro after defining all the `isnan` function?

If so then I think it makes sense to do the `TODO` in `math-macros.h`, that is to move `isinf`, `isfinite`, `isnan` macro definitions to `math-function-macros.h`, including it after `%%public_api` in here, and commenting about the reason we have to include it after all the function definitions.

https://github.com/llvm/llvm-project/pull/96008