[libc-commits] [libc] [llvm] [libc][math] Refactor llogb to Header Only (PR #175524)

[Muhammad Bassiouni via libc-commits]

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@@ -0,0 +1,73 @@
+//===-- Implementation header for llogb --------------------------*- 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_SRC___SUPPORT_MATH_LLOGB_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_LLOGB_H
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/FPUtil/FEnvImpl.h"
+#include "src/__support/FPUtil/FPBits.h"
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/optimization.h"  // LIBC_UNLIKELY
+#include <limits.h>
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE constexpr long llogb(double x) {
----------------
bassiounix wrote:

```suggestion
LIBC_INLINE static constexpr long llogb(double x) {
```

https://github.com/llvm/llvm-project/pull/175524