[libc-commits] [PATCH] D139064: Onboard signbitf to llvmlibc math functions.

[Siva Chandra via Phabricator via libc-commits]

sivachandra added inline comments.


================
Comment at: libc/spec/stdc.td:467
 
+          FunctionSpec<"signbitf", RetValSpec<BoolType>, [ArgSpec<FloatType>]>,
+
----------------
Is `signbitf` really specified by the C standard? For that matter, any standard at all? I think standards only specify a generic `signbit` macro which can be implemented as:

```
#define signbit(x) __builtin_signbit(x)
```


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D139064/new/

https://reviews.llvm.org/D139064