text: // ----------------------------------------------------------------------------
  // -                        Open3D: www.open3d.org                            -
  // ----------------------------------------------------------------------------
  // The MIT License (MIT)
  //
  // Copyright (c) 2018 www.open3d.org
  //
  // 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.
  // ----------------------------------------------------------------------------
  
  #pragma once
  
  #include "open3d/core/Tensor.h"
  #include "open3d/utility/Console.h"
  
  namespace open3d {
  namespace core {
  namespace kernel {
  
  enum class UnaryEWOpCode {
      Sqrt,
      Sin,
      Cos,
      Neg,
      Exp,
      Abs,
      Floor,
      Ceil,
      Round,
      Trunc,
      LogicalNot
  };
  
  void UnaryEW(const Tensor& src, Tensor& dst, UnaryEWOpCode op_code);
  
  void UnaryEWCPU(const Tensor& src, Tensor& dst, UnaryEWOpCode op_code);
  
  #ifdef BUILD_CUDA_MODULE
  void UnaryEWCUDA(const Tensor& src, Tensor& dst, UnaryEWOpCode op_code);
  #endif
  
  // Copy is separated from other unary ops since it support cross-device copy and
  // dtype casting.
  void Copy(const Tensor& src, Tensor& dst);
  
  void CopyCPU(const Tensor& src, Tensor& dst);
  
  #ifdef BUILD_CUDA_MODULE
  void CopyCUDA(const Tensor& src, Tensor& dst);
  #endif
  
  }  // namespace kernel
  }  // namespace core
  }  // namespace open3d
  