megenginelite-sys 1.8.2

A safe megenginelite wrapper in Rust
Documentation 
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/**
 * \file dnn/src/x86/elemwise/fma_util/fma_util.h
 * MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
 *
 * Copyright (c) 2014-2021 Megvii Inc. All rights reserved.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 */
#pragma once
#include "megdnn/arch.h"
#include "megdnn/basic_types.h"

#include <cstddef>

namespace megdnn {
namespace x86 {
namespace detail {
/*
 *  Case 1. Unary Optrs
 */

#define FMA_ELEMENT_OPTR_UNARY(optr_type)                                            \
    void fma_element_##optr_type(                                                    \
            const TensorND& src_tensor, const TensorND& dst_tensor);                 \
    void fma_element_##optr_type(size_t tsize, const float* src_ptr, float* dst_ptr) \
            MEGDNN_ATTRIBUTE_TARGET("fma");

FMA_ELEMENT_OPTR_UNARY(sigmoid)
FMA_ELEMENT_OPTR_UNARY(exp)
FMA_ELEMENT_OPTR_UNARY(tanh)
FMA_ELEMENT_OPTR_UNARY(fast_tanh)
FMA_ELEMENT_OPTR_UNARY(relu)
FMA_ELEMENT_OPTR_UNARY(set)

/*
 * Case 2. Binary Optrs
 * 2.1 src0 has the same size with src1.
 * 2.2 src1 is a scalar.
 * 2.3 shape of src1 is {1, C, 1, 1}.
 * 2.4 some other optrs only for dtype float32
 */

/*
 * Case 3. Ternary Optrs
 * 3.1 src0, src1 and src2 has the same size.
 * 3.2 src0, src1 has the same size, src2 is a scalar
 * 3.3 shape of src0 and src2 is (1,C,1,1).
 */

#define FMA_ELEMENT_OPTR_TERNARY(optr_type)                                  \
    void fma_element_##optr_type(                                            \
            const TensorND& src0_tensor, const TensorND& src1_tensor,        \
            const TensorND& src2_tensor, const TensorND& dst_tensor);        \
    void fma_element_##optr_type(                                            \
            size_t tsize, float* src0_ptr, float* src1_ptr, float* src2_ptr, \
            float* dst_ptr) MEGDNN_ATTRIBUTE_TARGET("fma");

// Case 3.1 src0, src1 and src2 has the same size.
FMA_ELEMENT_OPTR_TERNARY(fma3)

// Case 3.2 src1 is a scalar.
FMA_ELEMENT_OPTR_TERNARY(fma3_scalar)

// Case 3.3 shape of src0 and src2 is (1,C,1,1).
#define FMA_ELEMENT_OPTR_TERNARY_1C11(optr_type)                               \
    void fma_element_##optr_type(                                              \
            size_t batch_size, size_t channel_size, size_t channel_stride,     \
            const TensorND& src0_tensor, const TensorND& src1_tensor,          \
            const TensorND& src2_tensor, const TensorND& dst_tensor);          \
    void fma_element_##optr_type(                                              \
            size_t batch_size, size_t channel_size, size_t channel_stride,     \
            float* src0_ptr, float* src1_ptr, float* src2_ptr, float* dst_ptr) \
            MEGDNN_ATTRIBUTE_TARGET("fma");

FMA_ELEMENT_OPTR_TERNARY_1C11(fma3_1c11)

}  // namespace detail
}  // namespace x86
}  // namespace megdnn