/**
 * Copyright (c) 2025 Huawei Technologies Co., Ltd.
 * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
 * CANN Open Software License Agreement Version 2.0 (the "License").
 * Please refer to the License for details. You may not use this file except in compliance with the License.
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
 * See LICENSE in the root of the software repository for the full text of the License.
 */

/*!
 * \file foreach_expm1.cpp
 * \brief
 */

#include "kernel_operator.h"

// op kernel building at build_out directory, it's not fully aligned with source code structure
// current op_kernel folder is absent in build_out directory, so the relative path to common has just one layer
#include "../foreach_utils/foreach_implict_output.h"

using namespace AscendC;
using namespace Common::OpKernel;

template <typename T>
__aicore__ void Expm1Adapter(const LocalTensor<T>& dstLocal, const LocalTensor<T>& srcLocal, const int32_t& uValue)
{
    T scalarVal = T(-1);
    PipeBarrier<PIPE_V>();
    Exp(dstLocal, srcLocal, uValue);
    PipeBarrier<PIPE_V>();
    Adds(dstLocal, srcLocal, scalarVal, uValue);
}

extern "C" __global__ __aicore__ void foreach_expm1(GM_ADDR x, GM_ADDR y, GM_ADDR workspace, GM_ADDR tiling)
{
    GET_TILING_DATA(tilingData, tiling);

    // foreach(vector) not need workspace
    GM_ADDR userWS = nullptr;

    if (TILING_KEY_IS(1)) {
        ForeachImplictOutput<half, half, Expm1Adapter<half>, 2, 1> op;
        op.Init(x, y, userWS, &tilingData);
        op.Process();
    } else if (TILING_KEY_IS(2)) {
        ForeachImplictOutput<float, float, Expm1Adapter<float>, 2, 1> op;
        op.Init(x, y, userWS, &tilingData);
        op.Process();
    }
#if __CCE_AICORE__ >= 220 && !(defined(__NPU_ARCH__) && (__NPU_ARCH__ == 3003 || __NPU_ARCH__ == 3113))
    else if (TILING_KEY_IS(4)) {
        ForeachImplictOutput<bfloat16_t, float, Expm1Adapter<float>, 2, 1> op;
        op.Init(x, y, userWS, &tilingData);
        op.Process();
    } else if (TILING_KEY_IS(5)) {
        ForeachImplictOutput<int16_t, float, Expm1Adapter<float>, 2, 1> op;
        op.Init(x, y, userWS, &tilingData);
        op.Process();
    } else if (TILING_KEY_IS(7)) {
        ForeachImplictOutput<int8_t, half, Expm1Adapter<half>, 2, 1> op;
        op.Init(x, y, userWS, &tilingData);
        op.Process();
    } else if (TILING_KEY_IS(8)) {
        ForeachImplictOutput<uint8_t, half, Expm1Adapter<half>, 2, 1> op;
        op.Init(x, y, userWS, &tilingData);
        op.Process();
    }
#endif
}