1//===-- Implementation header for fabsf16 -----------------------*- 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_FABSF16_H
10#define LLVM_LIBC_SRC___SUPPORT_MATH_FABSF16_H
11
12#include "include/llvm-libc-macros/float16-macros.h"
13
14#ifdef LIBC_TYPES_HAS_FLOAT16
15
16#include "src/__support/FPUtil/BasicOperations.h"
17#include "src/__support/macros/config.h"
18#include "src/__support/macros/properties/architectures.h"
19#include "src/__support/macros/properties/compiler.h"
20
21namespace LIBC_NAMESPACE_DECL {
22namespace math {
23
24LIBC_INLINE constexpr float16 fabsf16(float16 x) {
25 if (cpp::is_constant_evaluated())
26 return fputil::abs(x);
27 // For x86, GCC generates better code from the generic implementation.
28 // https://godbolt.org/z/K9orM4hTa
29#if defined(__LIBC_MISC_MATH_BASIC_OPS_OPT) && \
30 !(defined(LIBC_TARGET_ARCH_IS_X86) && defined(LIBC_COMPILER_IS_GCC))
31 return __builtin_fabsf16(x);
32#else
33 return fputil::abs(x);
34#endif
35}
36
37} // namespace math
38} // namespace LIBC_NAMESPACE_DECL
39
40#endif // LIBC_TYPES_HAS_FLOAT16
41
42#endif // LLVM_LIBC_SRC___SUPPORT_MATH_FABSF16_H
43