libc/src/__support/FPUtil/FMA.h

   1 //===-- Common header for FMA implementations -------------------*- 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_FPUTIL_FMA_H
  10 #define LLVM_LIBC_SRC___SUPPORT_FPUTIL_FMA_H
  11
  12 #include "src/__support/CPP/type_traits.h"
  13 #include "src/__support/FPUtil/generic/FMA.h"
  14 #include "src/__support/macros/config.h"
  15 #include "src/__support/macros/properties/architectures.h"
  16 #include "src/__support/macros/properties/cpu_features.h" // LIBC_TARGET_CPU_HAS_FMA
  17
  18 namespace LIBC_NAMESPACE_DECL {
  19 namespace fputil {
  20
  21 template <typename OutType, typename InType>
  22 LIBC_INLINE OutType fma(InType x, InType y, InType z) {
  23   return generic::fma<OutType>(x, y, z);
  24 }
  25
  26 #ifdef LIBC_TARGET_CPU_HAS_FMA
  27 template <> LIBC_INLINE float fma(float x, float y, float z) {
  28   return __builtin_fmaf(x, y, z);
  29 }
  30
  31 template <> LIBC_INLINE double fma(double x, double y, double z) {
  32   return __builtin_fma(x, y, z);
  33 }
  34 #endif // LIBC_TARGET_CPU_HAS_FMA
  35
  36 } // namespace fputil
  37 } // namespace LIBC_NAMESPACE_DECL
  38
  39 #endif // LLVM_LIBC_SRC___SUPPORT_FPUTIL_FMA_H