cavis/libnd4j/include/ops/declarable/generic/linalg/trace.cpp

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/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// @author Yurii Shyrma (iuriish@yahoo.com), created on 24.01.2018
//
#include <system/op_boilerplate.h>
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#if NOT_EXCLUDED(OP_trace)
#include <ops/declarable/CustomOperations.h>
#include<ops/declarable/helpers/transforms.h>
namespace sd {
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namespace ops {
CUSTOM_OP_IMPL(trace, 1, 1, false, 0, 0) {
auto input = INPUT_VARIABLE(0);
auto output = OUTPUT_VARIABLE(0);
REQUIRE_TRUE(input->rankOf() >= 2, 0, "TRACE op: the rank of input array must be >=2, but got %i instead!", input->rankOf());
helpers::trace(block.launchContext(), *input, *output);
return Status::OK();
}
DECLARE_TYPES(trace) {
getOpDescriptor()->setAllowedInputTypes(0, {ALL_FLOATS})
->setAllowedOutputTypes(0, {ALL_FLOATS});
}
DECLARE_SHAPE_FN(trace) {
auto inShapeInfo = inputShape->at(0);
REQUIRE_TRUE(inShapeInfo[0] >= 2, 0, "TRACE op: the rank of input array must be >=2, but got %i instead!", inShapeInfo[0]);
const int rank = inShapeInfo[0] - 2;
Nd4jLong* outShapeInfo(nullptr);
ALLOCATE(outShapeInfo, block.getWorkspace(), shape::shapeInfoLength(rank), Nd4jLong);
outShapeInfo[0] = rank;
for(int i=1; i <= rank; ++i)
outShapeInfo[i] = inShapeInfo[i];
shape::updateStrides(outShapeInfo, shape::order(inShapeInfo));
auto result = ConstantShapeHelper::getInstance().createShapeInfo(ShapeDescriptor(outShapeInfo, ArrayOptions::dataType(inShapeInfo)));
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RELEASE(outShapeInfo, block.getWorkspace());
return SHAPELIST(result);
}
}
}
#endif