text: // Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
  //
  // 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.
  
  #include <gtest/gtest.h>
  #include "lite/api/paddle_use_kernels.h"
  #include "lite/api/paddle_use_ops.h"
  #include "lite/core/test/arena/framework.h"
  
  namespace paddle {
  namespace lite {
  
  struct _logical_and_func {
    inline bool operator()(const bool& a, const bool& b) const { return a && b; }
  };
  
  struct _logical_or_func {
    inline bool operator()(const bool& a, const bool& b) const { return a || b; }
  };
  
  struct _logical_xor_func {
    inline bool operator()(const bool& a, const bool& b) const {
      return (a || b) && !(a && b);
    }
  };
  
  struct _logical_not_func {
    inline bool operator()(const bool& a, const bool& b) const { return !a; }
  };
  
  template <class Functor>
  class LogicalTester : public arena::TestCase {
   protected:
    std::string op_type_ = "logical_xor";
    std::string x_ = "x";
    std::string y_ = "y";
    std::string out_ = "out";
    DDim dims_{{2, 3, 4, 5}};
  
   public:
    LogicalTester(const Place& place,
                  const std::string& alias,
                  const std::string& op_type)
        : TestCase(place, alias), op_type_(op_type) {}
  
    void RunBaseline(Scope* scope) override {
      auto* x = scope->FindTensor(x_);
      const bool* x_data = x->template data<bool>();
      const Tensor* y = nullptr;
      const bool* y_data = nullptr;
      if (op_type_ != "logical_not") {
        y = scope->FindTensor(y_);
        y_data = y->template data<bool>();
      }
  
      auto* out = scope->NewTensor(out_);
      out->Resize(dims_);
      bool* out_data = out->template mutable_data<bool>();
      for (int i = 0; i < dims_.production(); i++) {
        bool y_tmp = (y_data == nullptr) ? true : y_data[i];
        out_data[i] = Functor()(x_data[i], y_tmp);
      }
    }
  
    void PrepareOpDesc(cpp::OpDesc* op_desc) {
      op_desc->SetType(op_type_);
      op_desc->SetInput("X", {x_});
      if (op_type_ != "logical_not") {
        op_desc->SetInput("Y", {y_});
      }
      op_desc->SetOutput("Out", {out_});
    }
  
    void PrepareData() override {
      bool* dx = new bool[dims_.production()];
      for (int64_t i = 0; i < dims_.production(); i++) {
        dx[i] = (i % 3 == 0);
      }
      SetCommonTensor(x_, dims_, dx);
      delete dx;
  
      if (op_type_ != "logical_not") {
        bool* dy = new bool[dims_.production()];
        for (int64_t i = 0; i < dims_.production(); i++) {
          dy[i] = (i % 2 == 0);
        }
        SetCommonTensor(y_, dims_, dy);
        delete dy;
      }
    }
  };
  
  void TestLogical(Place place, float abs_error) {
    std::unique_ptr<arena::TestCase> logical_and_tester(
        new LogicalTester<_logical_and_func>(place, "def", "logical_and"));
    arena::Arena arena_and(std::move(logical_and_tester), place, abs_error);
    arena_and.TestPrecision();
  
  #if !defined(LITE_WITH_XPU)
    std::unique_ptr<arena::TestCase> logical_or_tester(
        new LogicalTester<_logical_or_func>(place, "def", "logical_or"));
    arena::Arena arena_or(std::move(logical_or_tester), place, abs_error);
    arena_or.TestPrecision();
  
    std::unique_ptr<arena::TestCase> logical_xor_tester(
        new LogicalTester<_logical_xor_func>(place, "def", "logical_xor"));
    arena::Arena arena_xor(std::move(logical_xor_tester), place, abs_error);
    arena_xor.TestPrecision();
  #endif
  
    std::unique_ptr<arena::TestCase> logical_not_tester(
        new LogicalTester<_logical_not_func>(place, "def", "logical_not"));
    arena::Arena arena_not(std::move(logical_not_tester), place, abs_error);
    arena_not.TestPrecision();
  }
  
  TEST(Logical, precision) {
    Place place;
    float abs_error = 1e-5;
  #if defined(LITE_WITH_ARM)
    place = TARGET(kHost);
  #elif defined(LITE_WITH_XPU) && !defined(LITE_WITH_XTCL)
    place = TARGET(kXPU);
  #else
    return;
  #endif
  
    TestLogical(place, abs_error);
  }
  
  }  // namespace lite
  }  // namespace paddle
  