wehub-resource-sync
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
// Copyright (c) 2026 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <ATen/core/Tensor.h>
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namespace at {
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inline at::Tensor select(const at::Tensor& self, int64_t dim, int64_t index) {
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// Normalize dim to positive value for error messages
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int64_t orig_dim = dim;
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if (dim < 0) {
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dim += self.dim();
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}
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// Check dim is valid
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if (dim < 0 || dim >= self.dim()) {
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PD_CHECK(false,
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"select(): index ",
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orig_dim,
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" out of range for tensor of size ",
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self.sizes(),
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" at dimension ",
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orig_dim);
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}
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// Handle negative index
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int64_t orig_index = index;
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if (index < 0) {
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index = self.size(dim) + index;
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}
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// Check index is valid
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if (index < 0 || index >= self.size(dim)) {
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PD_CHECK(false,
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"select(): index ",
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orig_index,
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" out of range for tensor of size ",
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self.sizes(),
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" at dimension ",
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orig_dim < 0 ? orig_dim + self.dim() : orig_dim);
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}
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return Tensor(
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paddle::experimental::slice(self._PD_GetInner(),
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/*axes=*/{static_cast<int>(dim)},
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/*starts=*/{index},
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/*ends=*/{index + 1},
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/*infer_flags=*/{1},
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/*decrease_axis=*/{static_cast<int>(dim)}));
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}
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inline at::Tensor select_symint(const at::Tensor& self,
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int64_t dim,
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c10::SymInt index) {
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return select(self, dim, static_cast<int64_t>(index));
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}
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} // namespace at
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namespace at {
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inline at::Tensor Tensor::select(int64_t dim, int64_t index) const {
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return at::select(*this, dim, index);
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}
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inline at::Tensor Tensor::select_symint(int64_t dim, c10::SymInt index) const {
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return at::select_symint(*this, dim, index);
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}
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} // namespace at
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