Program Listing for File tensor_util.hpp

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/* * SPDX-FileCopyrightText: Copyright (c) 2021-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved. * SPDX-License-Identifier: Apache-2.0 * * 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 "morpheus/export.h" #include "morpheus/types.hpp" // for ShapeType, TensorIndex #include <algorithm> // IWYU pragma: keep #include <functional> // for multiplies #include <iosfwd> // for ostream #include <numeric> // for accumulate #include <string> // for string #include <vector> // for vector // <algorithm> is needed for copy, min_element & transform namespace morpheus { struct MORPHEUS_EXPORT TensorUtils { static void write_shape_to_stream(const ShapeType& shape, std::ostream& os); static std::string shape_to_string(const ShapeType& shape); static void set_contiguous_stride(const ShapeType& shape, ShapeType& stride); static bool has_contiguous_stride(const ShapeType& shape, const ShapeType& stride); static bool validate_shape_and_stride(const ShapeType& shape, const ShapeType& stride); template <typename IndexT = TensorIndex, typename SrcIndexT = IndexT> static std::vector<IndexT> get_element_stride(const std::vector<SrcIndexT>& stride) { std::vector<IndexT> tensor_stride(stride.size()); auto min_stride = std::min_element(stride.cbegin(), stride.cend()); auto min_stride_val = *min_stride; std::transform(stride.cbegin(), stride.cend(), tensor_stride.begin(), [min_stride_val](const SrcIndexT s) { return s / min_stride_val; }); return tensor_stride; } template <typename IndexT> static inline TensorSize get_elem_count(const std::vector<IndexT>& shape) { return std::accumulate(shape.begin(), shape.end(), TensorSize{1}, std::multiplies<>()); } }; // end of group } // namespace morpheus

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