// Copyright (c) 2026 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 <ATen/core/Tensor.h>
#include <ATen/ops/tensor_split.h>

namespace at {

inline std::vector<at::Tensor> hsplit(const at::Tensor& self,
                                      int64_t sections) {
  // For 1D tensors, split along dim 0; otherwise split along dim 1
  int64_t dim = self._PD_GetInner().dims().size() == 1 ? 0 : 1;
  return at::tensor_split(self, sections, dim);
}

inline std::vector<at::Tensor> hsplit(const at::Tensor& self,
                                      at::IntArrayRef indices) {
  int64_t dim = self._PD_GetInner().dims().size() == 1 ? 0 : 1;
  return at::tensor_split(self, indices, dim);
}

}  // namespace at

namespace at {

inline std::vector<at::Tensor> Tensor::hsplit(int64_t sections) const {
  return at::hsplit(*this, sections);
}

inline std::vector<at::Tensor> Tensor::hsplit(at::IntArrayRef indices) const {
  return at::hsplit(*this, indices);
}

}  // namespace at