1//===-- Implementation header for truncf16 ----------------------*- 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_TRUNCF16_H
10#define LLVM_LIBC_SRC___SUPPORT_MATH_TRUNCF16_H
11
12#include "include/llvm-libc-macros/float16-macros.h"
13
14#ifdef LIBC_TYPES_HAS_FLOAT16
15
16#include "src/__support/FPUtil/NearestIntegerOperations.h"
17#include "src/__support/FPUtil/cast.h"
18#include "src/__support/macros/config.h"
19#include "src/__support/macros/properties/cpu_features.h"
20
21namespace LIBC_NAMESPACE_DECL {
22namespace math {
23
24LIBC_INLINE LIBC_CONSTEXPR float16 truncf16(float16 x) {
25#if defined(__LIBC_USE_BUILTIN_CEIL_FLOOR_RINT_TRUNC) && \
26 defined(LIBC_TARGET_CPU_HAS_FAST_FLOAT16_OPS) && \
27 !defined(LIBC_USE_CONSTEXPR)
28 return fputil::cast<float16>(__builtin_truncf(x));
29#else
30 return fputil::trunc(x);
31#endif
32}
33
34} // namespace math
35} // namespace LIBC_NAMESPACE_DECL
36
37#endif // LIBC_TYPES_HAS_FLOAT16
38
39#endif // LLVM_LIBC_SRC___SUPPORT_MATH_TRUNCF16_H
40