[libc] [llvm] [libc][math][c23] Add atan2f16 function (PR #183531)

[Muhammad Bassiouni via llvm-commits]

================
@@ -1,28 +1,28 @@
-//===-- Implementation header for tanpif16 ----------------------*- C++ -*-===//
+//===-- Shared atan2f16 function --------------------------------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_LIBC_SHARED_MATH_TANPIF16_H
-#define LLVM_LIBC_SHARED_MATH_TANPIF16_H
+#ifndef LLVM_LIBC_SHARED_MATH_ATAN2F16_H
+#define LLVM_LIBC_SHARED_MATH_ATAN2F16_H
 
 #include "shared/libc_common.h"
 
 #ifdef LIBC_TYPES_HAS_FLOAT16
 
-#include "src/__support/math/tanpif16.h"
+#include "src/__support/math/atan2f16.h"
----------------
bassiounix wrote:

```suggestion
#include "include/llvm-libc-macros/float16-macros.h"

#ifdef LIBC_TYPES_HAS_FLOAT16

#include "shared/libc_common.h"
#include "src/__support/math/atan2f16.h"
```

https://github.com/llvm/llvm-project/pull/183531