1//===-- Implementation header for round -------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_LIBC_SRC___SUPPORT_MATH_ROUND_H
10#define LLVM_LIBC_SRC___SUPPORT_MATH_ROUND_H
11
12#include "src/__support/FPUtil/NearestIntegerOperations.h"
13#include "src/__support/macros/config.h"
14
15namespace LIBC_NAMESPACE_DECL {
16namespace math {
17
18LIBC_INLINE LIBC_CONSTEXPR double round(double x) {
19#if defined(__LIBC_USE_BUILTIN_ROUND) && !defined(LIBC_USE_CONSTEXPR)
20 return __builtin_round(x);
21#else
22 return fputil::round(x);
23#endif
24}
25
26} // namespace math
27} // namespace LIBC_NAMESPACE_DECL
28
29#endif // LLVM_LIBC_SRC___SUPPORT_MATH_ROUND_H
30