66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
/*
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* Copyright (c) 2017 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "Histogram.h"
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#include "Utils.h"
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#include "arm_compute/core/Helpers.h"
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namespace arm_compute
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{
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namespace test
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{
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namespace validation
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{
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namespace reference
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{
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template <typename T>
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SimpleTensor<uint32_t> histogram(const SimpleTensor<T> &src, size_t num_bins, int32_t offset, uint32_t range)
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{
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SimpleTensor<uint32_t> dst(TensorShape(num_bins), DataType::U32);
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// Clear the distribution
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for(size_t element_idx = 0; element_idx < num_bins; ++element_idx)
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{
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dst[element_idx] = 0;
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}
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// Create the histogram
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for(int element_idx = 0; element_idx < src.num_elements(); ++element_idx)
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{
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if((offset <= src[element_idx]) && (src[element_idx] < (offset + range)))
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{
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const int index = (src[element_idx] - offset) * num_bins / range;
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dst[index]++;
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}
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}
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return dst;
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}
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template SimpleTensor<uint32_t> histogram(const SimpleTensor<uint8_t> &src, size_t num_bins, int32_t offset, uint32_t range);
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} // namespace reference
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} // namespace validation
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} // namespace test
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} // namespace arm_compute
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