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| 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 | |
| 28 | #ifdef LIBC_TARGET_CPU_HAS_FMA_FLOAT |
| 29 | template <> LIBC_INLINE float fma(float x, float y, float z) { |
| 30 | #if __has_builtin(__builtin_elementwise_fma) |
| 31 | return __builtin_elementwise_fma(x, y, z); |
| 32 | #else |
| 33 | return __builtin_fmaf(x, y, z); |
| 34 | #endif |
| 35 | } |
| 36 | #endif // LIBC_TARGET_CPU_HAS_FMA_FLOAT |
| 37 | |
| 38 | #ifdef LIBC_TARGET_CPU_HAS_FMA_DOUBLE |
| 39 | template <> LIBC_INLINE double fma(double x, double y, double z) { |
| 40 | #if __has_builtin(__builtin_elementwise_fma) |
| 41 | return __builtin_elementwise_fma(x, y, z); |
| 42 | #else |
| 43 | return __builtin_fma(x, y, z); |
| 44 | #endif |
| 45 | } |
| 46 | #endif // LIBC_TARGET_CPU_HAS_FMA_DOUBLE |
| 47 | #endif // LIBC_TARGET_CPU_HAS_FMA |
| 48 | |
| 49 | } // namespace fputil |
| 50 | } // namespace LIBC_NAMESPACE_DECL |
| 51 | |
| 52 | #endif // LLVM_LIBC_SRC___SUPPORT_FPUTIL_FMA_H |
| 53 |
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