BitwiseAnd.h

// Copyright 2018 The AITS DNNC Authors.All Rights Reserved.
//
// Licensed to the Apache Software Foundation(ASF) under one
// or more contributor license agreements.See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.The ASF licenses this file
// to you 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 permissionsand limitations
// under the License.
//
// This file is part of AITS DNN compiler maintained at
// https://github.com/ai-techsystems/dnnCompiler
//

#pragma once
#include "core/broadcast.h"
#include "operators/baseOperator.h"
#include <string>

using namespace Eigen;

namespace dnnc {

/*! This does bit wise binary and operation of two given N D tensors of
   same size. This operator supports multidirectional (i.e., Numpy-style)
   broadcasting.*/

template <typename To, typename Ti>
class BitwiseAnd : public baseOperator<To, Ti, Ti> {
protected:
  /*! Bit wise And Function*/
  static To bitwise_and_func(Ti x, Ti y) { return (To)((int)x & (int)y); }

public:
  BitwiseAnd(std::string name = "opBitwiseAnd")
      : baseOperator<To, Ti, Ti>(opBitwiseAnd, name) {}

  tensor<To> compute(tensor<Ti> a /*!< [bool, int]: N D tensor input*/,
                     tensor<Ti> b /*!< [bool, int]: N D tensor input*/) {

    std::vector<DIMENSION> resultShape = binaryBroadcastReShape(a, b);
    tensor<To> result(resultShape);

    // This check is for NUMPY standard
    // if (!(this->template type_check<Ti, bool,int>() ))
    //   SPDLOG_ERROR(
    //       "Constrain input tensors to int or bool tensors.");

    if (a.shape() != b.shape()) {
      SPDLOG_ERROR("tensor dimenions not appropriate for BitwiseAnd operator.");
      return NULL_TENSOR<To>;
    }

    DNNC_EIGEN_ARRAY_MAP(eigenVectorA, Ti, a);
    DNNC_EIGEN_ARRAY_MAP(eigenVectorB, Ti, b);

    DNNC_EIGEN_VECTOR_CTOR(To) eResult;

    eResult.array() = eigenVectorA.array().binaryExpr(eigenVectorB.array(),
                                                      &bitwise_and_func);
    result.load(eResult.data());

    return result;
  }
  /*!<
  \return The output tensor of the same shape and dtype as input.
  */
};
} // namespace dnnc