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/*
* Copyright (c) 2016-2021 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ARM_COMPUTE_CPU_SUB_KERNEL_H
#define ARM_COMPUTE_CPU_SUB_KERNEL_H
#include "src/core/common/Macros.h"
#include "src/core/cpu/ICpuKernel.h"
namespace arm_compute
{
namespace cpu
{
namespace kernels
{
/** Interface for the kernel to perform subtraction between two tensors */
class CpuSubKernel : public ICpuKernel
{
public:
CpuSubKernel() = default;
ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(CpuSubKernel);
/** Initialise the kernel's src and dst.
*
* Valid configurations (src0,src1) -> dst :
*
* - (U8,U8) -> U8
* - (U8,U8) -> S16
* - (QASYMM8, QASYMM8) -> QASYMM8
* - (QASYMM8_SIGNED, QASYMM8_SIGNED) -> QASYMM8_SIGNED
* - (S16,U8) -> S16
* - (U8,S16) -> S16
* - (S16,S16) -> S16
* - (S32,S32) -> S32
* - (F16,F16) -> F16
* - (F32,F32) -> F32
*
* @param[in] src0 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/S32/F16/F32
* @param[in] src1 An input tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/S32/F16/F32
* @param[out] dst The dst tensor. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/S32/F16/F32.
* @param[in] policy Overflow policy. Convert policy cannot be WRAP if datatype is quantized.
*/
void configure(const ITensorInfo *src0, const ITensorInfo *src1, ITensorInfo *dst, ConvertPolicy policy);
/** Static function to check if given info will lead to a valid configuration of @ref CpuSubKernel
*
* Valid configurations (src0,src1) -> dst :
*
* - (U8,U8) -> U8
* - (U8,U8) -> S16
* - (QASYMM8, QASYMM8) -> QASYMM8
* - (QASYMM8_SIGNED, QASYMM8_SIGNED) -> QASYMM8_SIGNED
* - (S16,U8) -> S16
* - (U8,S16) -> S16
* - (S16,S16) -> S16
* - (S32,S32) -> S32
* - (F16,F16) -> F16
* - (F32,F32) -> F32
*
* @param[in] src0 An input tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/S32/F16/F32
* @param[in] src1 An input tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/S32/F16/F32
* @param[in] dst The dst tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/QSYMM16/S16/S32/F16/F32.
* @param[in] policy Policy to use to handle overflow. Convert policy cannot be WRAP if datatype is quantized.
*
* @return a status
*/
static Status validate(const ITensorInfo *src0, const ITensorInfo *src1, const ITensorInfo *dst, ConvertPolicy policy);
// Inherited methods overridden:
void run_op(ITensorPack &tensors, const Window &window, const ThreadInfo &info) override;
const char *name() const override;
private:
ConvertPolicy _policy{};
};
} // namespace kernels
} // namespace cpu
} // namespace arm_compute
#endif /* ARM_COMPUTE_CPU_SUB_KERNEL_H */
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