69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
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/*******************************************************************************
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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 24.01.2018
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//
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#include <op_boilerplate.h>
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#if NOT_EXCLUDED(OP_trace)
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#include <ops/declarable/CustomOperations.h>
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#include<ops/declarable/helpers/transforms.h>
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namespace nd4j {
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namespace ops {
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CUSTOM_OP_IMPL(trace, 1, 1, false, 0, 0) {
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auto input = INPUT_VARIABLE(0);
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auto output = OUTPUT_VARIABLE(0);
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REQUIRE_TRUE(input->rankOf() >= 2, 0, "TRACE op: the rank of input array must be >=2, but got %i instead!", input->rankOf());
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helpers::trace(block.launchContext(), *input, *output);
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return Status::OK();
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}
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DECLARE_TYPES(trace) {
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getOpDescriptor()->setAllowedInputTypes(0, {ALL_FLOATS})
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->setAllowedOutputTypes(0, {ALL_FLOATS});
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}
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DECLARE_SHAPE_FN(trace) {
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auto inShapeInfo = inputShape->at(0);
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REQUIRE_TRUE(inShapeInfo[0] >= 2, 0, "TRACE op: the rank of input array must be >=2, but got %i instead!", inShapeInfo[0]);
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const int rank = inShapeInfo[0] - 2;
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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] = inShapeInfo[i];
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shape::updateStrides(outShapeInfo, shape::order(inShapeInfo));
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auto result = ConstantShapeHelper::getInstance()->createShapeInfo(ShapeDescriptor(outShapeInfo, ArrayOptions::dataType(inShapeInfo)));
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RELEASE(outShapeInfo, block.getWorkspace());
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return SHAPELIST(result);
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}
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}
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}
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#endif
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