wehub-resource-sync
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
/*
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* SPDX-FileCopyrightText: Copyright (c) 1993-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0
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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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*/
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#ifndef TRT_PLUGIN_DIMS_HELPERS_H
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#define TRT_PLUGIN_DIMS_HELPERS_H
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#include "common/plugin.h" // purely for assertions
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#include <algorithm> // all of
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#include <functional>
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#include <numeric>
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namespace nvinfer1
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{
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namespace pluginInternal
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{
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//! Return number of elements in the given dimensions in the range [start, stop).
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//! Does not include padding added for vectorized formats.
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//!
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//! \param dims dimensions whose partial volume needs to be computed
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//! \param start inclusive start axis
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//! \param stop exclusive stop axis
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//!
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//! Expects 0 <= start <= stop <= dims.nbDims.
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//! For i in the range [start,stop), dims.d[i] must be non-negative.
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//!
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inline int64_t volume(Dims const& dims, int32_t start, int32_t stop)
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{
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// The signature is int32_t start (and not uint32_t start) because int32_t is used
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// for indexing everywhere
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ASSERT_PARAM(start >= 0);
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ASSERT_PARAM(start <= stop);
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ASSERT_PARAM(stop <= dims.nbDims);
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ASSERT_PARAM(std::all_of(dims.d + start, dims.d + stop, [](int32_t x) { return x >= 0; }));
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return std::accumulate(dims.d + start, dims.d + stop, int64_t{1}, std::multiplies<int64_t>{});
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}
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//! Shorthand for volume(dims, 0, dims.nbDims).
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inline int64_t volume(Dims const& dims)
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{
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return volume(dims, 0, dims.nbDims);
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}
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} // namespace pluginInternal
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} // namespace nvinfer1
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#endif // TRT_PLUGIN_DIMS_HELPERS_H
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