// Copyright (c) 2024 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.
#pragma once

#include "paddle/phi/kernels/funcs/common_shape.h"
namespace phi::funcs {

inline DDim BroadcastTwoDims(const DDim &x_dims,
                             const DDim &y_dims,
                             int axis = -1) {
  int max_dim = std::max(x_dims.size(), y_dims.size());
  axis = (axis == -1 ? std::abs(x_dims.size() - y_dims.size()) : axis);
  std::vector<int64_t> x_dims_array(max_dim);
  std::vector<int64_t> y_dims_array(max_dim);
  std::vector<int64_t> out_dims_array(max_dim);
  GetBroadcastDimsArrays(x_dims,
                         y_dims,
                         x_dims_array.data(),
                         y_dims_array.data(),
                         out_dims_array.data(),
                         max_dim,
                         axis);
  return make_ddim(out_dims_array);
}

}  // namespace phi::funcs