text: /**
   * Copyright 2020 Huawei Technologies Co., Ltd
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  #ifndef MINDSPORE_CORE_OPS_RFFT_H_
  #define MINDSPORE_CORE_OPS_RFFT_H_
  #include <memory>
  #include <vector>
  
  #include "ops/base_operator.h"
  #include "mindapi/base/types.h"
  
  namespace mindspore {
  namespace ops {
  constexpr auto kNameRfft = "Rfft";
  /// \brief Rfft defined the operator prototype of computing discrete fourier transform of a real-valued signal.
  class MIND_API Rfft : public BaseOperator {
   public:
    MIND_API_BASE_MEMBER(Rfft);
    /// \brief Constructor.
    Rfft() : BaseOperator(kNameRfft) {}
  
    /// \brief Method to init the op's attributes.
    ///
    /// \param[in] fft_length Define the FFT length to compute discrete fourier transform.
    void Init(const int64_t fft_length);
  
    /// \brief Method to set fft_length attribute.
    ///
    /// \param[in] fft_length Define the FFT length to compute discrete fourier transform.
    void set_fft_length(const int64_t fft_length);
  
    /// \brief Method to get fft_length attribute.
    ///
    /// \return the FFT length.
    int64_t get_fft_length() const;
  };
  abstract::AbstractBasePtr RfftInfer(const abstract::AnalysisEnginePtr &, const PrimitivePtr &primitive,
                                      const std::vector<abstract::AbstractBasePtr> &input_args);
  }  // namespace ops
  }  // namespace mindspore
  
  #endif  // MINDSPORE_CORE_OPS_RFFT_H_
  