[libc-commits] [libc] [llvm] [libc][math][c23] Add cosbf16 math function (PR #185801)

[Muhammad Bassiouni via libc-commits]

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@@ -0,0 +1,75 @@
+//===-- Implementation header for cosbf16 -----------------------*- 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_COSBF16_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_COSBF16_H
+
+#include "hdr/errno_macros.h"
+#include "hdr/fenv_macros.h"
+#include "sincosf_utils.h"
+#include "src/__support/FPUtil/FEnvImpl.h"
+#include "src/__support/FPUtil/FPBits.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/FPUtil/cast.h"
+#include "src/__support/FPUtil/multiply_add.h"
+#include "src/__support/macros/optimization.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+namespace math {
+
+LIBC_INLINE bfloat16 cosbf16(bfloat16 x) {
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bassiounix wrote:

We added some primitives recently to make math functions `constexpr`, could you use those and add the respective tests?

https://github.com/llvm/llvm-project/pull/185801