93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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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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* 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 Yurii Shyrma (iuriish@yahoo.com), created on 05.02.2018
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//
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#include <op_boilerplate.h>
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#if NOT_EXCLUDED(OP_meshgrid)
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#include <ops/declarable/CustomOperations.h>
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#include<ops/declarable/helpers/meshgrid.h>
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#include <numeric>
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namespace nd4j {
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namespace ops {
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CUSTOM_OP_IMPL(meshgrid, -1, -1, false, 0, 0) {
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int rank = block.width();
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if(rank == 1) {
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OUTPUT_VARIABLE(0)->assign(INPUT_VARIABLE(0));
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return Status::OK();
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}
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bool swapFirst2Dims = block.getIArguments()->size() > 0 ? (bool)INT_ARG(0) : true;
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std::vector<NDArray*> inArrs(rank);
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std::vector<NDArray*> outArrs(rank);
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for(int i = 0; i < rank; ++i) {
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inArrs[i] = INPUT_VARIABLE(i);
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outArrs[i] = OUTPUT_VARIABLE(i);
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}
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helpers::meshgrid(block.launchContext(), inArrs, outArrs, swapFirst2Dims);
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return Status::OK();
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}
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DECLARE_TYPES(meshgrid) {
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getOpDescriptor()
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->setAllowedInputTypes(DataType::ANY)
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->setAllowedOutputTypes(DataType::INHERIT)
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->setSameMode(true);
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}
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DECLARE_SHAPE_FN(meshgrid) {
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bool swapFirst2Dims = block.getIArguments()->size() > 0 ? (bool)INT_ARG(0) : true;
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int rank = block.width();
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Nd4jLong* outShapeInfo = nullptr;
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ALLOCATE(outShapeInfo, block.getWorkspace(), shape::shapeInfoLength(rank), Nd4jLong);
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outShapeInfo[0] = rank;
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for(int i = 1; i <= rank; ++i)
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outShapeInfo[i] = (Nd4jLong)shape::length(inputShape->at(i - 1));
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if(swapFirst2Dims && rank > 1)
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math::nd4j_swap<Nd4jLong>(outShapeInfo[1], outShapeInfo[2]);
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auto in = inputShape->at(0);
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ShapeUtils::updateStridesAndType(outShapeInfo, in, shape::order(in));
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auto shapes = SHAPELIST();
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auto resultShape = CONSTANT(outShapeInfo);
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shapes->push_back(resultShape);
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for(int i = 2; i <= rank; ++i) {
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shapes->push_back(resultShape);
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}
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return shapes;
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}
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}
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}
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#endif |