wehub-resource-sync
71 lines
2.8 KiB
C++
71 lines
2.8 KiB
C++
/* ******************************************************************************
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*
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* See the NOTICE file distributed with this work for additional
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* information regarding copyright ownership.
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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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// @author George A. Shulinok <sgazeos@gmail.com>
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//
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#include <ops/declarable/helpers/matrix_band.h>
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#if NOT_EXCLUDED(OP_matrix_band)
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namespace sd {
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namespace ops {
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namespace helpers {
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template <typename T>
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void matrixBandPart_(NDArray* input, NDArray* output, sd::LongType lowerBand, sd::LongType upperBand) {
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// TO DO: retrieve all 2D submatrices with last dimensions and process them with given bands
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sd::LongType M = input->sizeAt(-2);
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sd::LongType N = input->sizeAt(-1);
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sd::LongType lastDim = input->rankOf() - 1;
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sd::LongType preLastDim = input->rankOf() - 2;
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ResultSet listOut = output->allTensorsAlongDimension({preLastDim, lastDim});
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ResultSet listDiag = input->allTensorsAlongDimension({preLastDim, lastDim});
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for (sd::LongType e = 0; e < static_cast<sd::LongType>(listOut.size()); ++e) {
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NDArray* inputMatrix = listDiag.at(e);
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NDArray* outputMatrix = listOut.at(e);
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if (outputMatrix != inputMatrix) // if not inplace
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outputMatrix->assign(inputMatrix);
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if (lowerBand >= 0) {
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for (sd::LongType row = 0; row < inputMatrix->rows(); ++row) {
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for (sd::LongType col = 0; col < row; ++col) {
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if ((row - col) > lowerBand) outputMatrix->p(row, col, 0.);
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}
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}
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}
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if (upperBand >= 0) {
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for (sd::LongType col = 0; col < inputMatrix->columns(); ++col) {
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for (sd::LongType row = 0; row < col; ++row) {
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if ((col - row) > upperBand) outputMatrix->p(row, col, 0.);
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}
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}
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}
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}
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}
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void matrixBandPart(sd::LaunchContext* context, NDArray* input, NDArray* output, sd::LongType lowerBand,
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sd::LongType upperBand) {
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BUILD_SINGLE_SELECTOR(input->dataType(), matrixBandPart_, (input, output, lowerBand, upperBand), SD_FLOAT_TYPES);
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}
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BUILD_SINGLE_TEMPLATE( void matrixBandPart_,
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(NDArray * input, NDArray* output, sd::LongType lowerBand, sd::LongType upperBand),
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SD_FLOAT_TYPES);
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} // namespace helpers
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} // namespace ops
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} // namespace sd
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#endif |