| /* |
| * Copyright (c) 2018-2019, 2022-2023 Arm Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include "Gather.h" |
| |
| #include "arm_compute/core/Types.h" |
| #include "arm_compute/core/utils/misc/ShapeCalculator.h" |
| #include "tests/validation/Helpers.h" |
| |
| namespace arm_compute |
| { |
| namespace test |
| { |
| namespace validation |
| { |
| namespace reference |
| { |
| template <typename T> |
| SimpleTensor<T> gather(const SimpleTensor<T> &src, const SimpleTensor<uint32_t> &indices, uint32_t actual_axis) |
| { |
| const TensorShape dst_shape = arm_compute::misc::shape_calculator::compute_gather_shape(src.shape(), indices.shape(), actual_axis); |
| SimpleTensor<T> dst(dst_shape, src.data_type()); |
| |
| const auto src_ptr = static_cast<const T *>(src.data()); |
| const auto indices_ptr = static_cast<const uint32_t *>(indices.data()); |
| const auto dst_ptr = static_cast<T *>(dst.data()); |
| |
| const uint32_t index_limit = src.shape()[actual_axis]; |
| |
| Window win; |
| win.use_tensor_dimensions(dst_shape); |
| |
| execute_window_loop(win, [&](const Coordinates &dst_coords) { |
| const auto dst_addr = coords2index(dst.shape(), dst_coords); |
| |
| // Calculate the coordinates of the index value. |
| Coordinates idx_coords; |
| |
| for(size_t i = 0; i < indices.shape().num_dimensions(); ++i) |
| { |
| idx_coords.set(i, dst_coords[i + actual_axis]); |
| } |
| |
| const auto index = indices_ptr[coords2index(indices.shape(), idx_coords)]; |
| |
| if(index < index_limit) |
| { |
| // Calculate the coordinates of the source data. |
| Coordinates src_coords; |
| |
| for(size_t i = 0; i < actual_axis; ++i) |
| { |
| src_coords.set(i, dst_coords[i]); |
| } |
| |
| src_coords.set(actual_axis, index); |
| |
| for(size_t i = actual_axis + 1; i < src.shape().num_dimensions(); ++i) |
| { |
| src_coords.set(i, dst_coords[i + indices.shape().num_dimensions() - 1]); |
| } |
| |
| // Copy the data. |
| const auto src_addr = coords2index(src.shape(), src_coords); |
| dst_ptr[dst_addr] = src_ptr[src_addr]; |
| } |
| else |
| { |
| dst_ptr[dst_addr] = 0; |
| } |
| }); |
| |
| return dst; |
| } |
| |
| template SimpleTensor<float> gather(const SimpleTensor<float> &src, const SimpleTensor<uint32_t> &indices, uint32_t actual_axis); |
| template SimpleTensor<half> gather(const SimpleTensor<half> &src, const SimpleTensor<uint32_t> &indices, uint32_t actual_axis); |
| template SimpleTensor<uint16_t> gather(const SimpleTensor<uint16_t> &src, const SimpleTensor<uint32_t> &indices, uint32_t actual_axis); |
| template SimpleTensor<uint8_t> gather(const SimpleTensor<uint8_t> &src, const SimpleTensor<uint32_t> &indices, uint32_t actual_axis); |
| } // namespace reference |
| } // namespace validation |
| } // namespace test |
| } // namespace arm_compute |