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/macros/properties/architectures.h"
  13 #include "src/__support/macros/properties/cpu_features.h" // LIBC_TARGET_CPU_HAS_FMA
  14
  15 #if defined(LIBC_TARGET_CPU_HAS_FMA)
  16
  17 #if defined(LIBC_TARGET_ARCH_IS_X86_64)
  18 #include "x86_64/FMA.h"
  19 #elif defined(LIBC_TARGET_ARCH_IS_AARCH64)
  20 #include "aarch64/FMA.h"
  21 #elif defined(LIBC_TARGET_ARCH_IS_RISCV64)
  22 #include "riscv64/FMA.h"
  23 #endif
  24
  25 #else
  26 // FMA instructions are not available
  27 #include "generic/FMA.h"
  28 #include "src/__support/CPP/type_traits.h"
  29
  30 namespace __llvm_libc {
  31 namespace fputil {
  32
  33 template <typename T> LIBC_INLINE T fma(T x, T y, T z) {
  34   return generic::fma(x, y, z);
  35 }
  36
  37 } // namespace fputil
  38 } // namespace __llvm_libc
  39
  40 #endif
  41
  42 #endif // LLVM_LIBC_SRC_SUPPORT_FPUTIL_FMA_H