52 lines
1.7 KiB
C++
52 lines
1.7 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 20.04.2018
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//
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#include <ops/declarable/helpers/transforms.h>
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#include <helpers/Loops.h>
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namespace sd {
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namespace ops {
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namespace helpers {
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////////////////////////////////////////////////////////////////////////
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void invertPermutation(sd::LaunchContext * context, const NDArray& input, NDArray& output) {
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std::set<int> uniqueElems;
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const int length = input.lengthOf();
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for(int i = 0; i < length; ++i) {
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int elem = input.e<int>(i);
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if(!uniqueElems.insert(elem).second) // this operation forbids us to use #pragma omp
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throw std::runtime_error("helpers::invertPermutation function: input array contains duplicates !");
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if(elem < 0 || elem > length - 1)
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throw std::runtime_error("helpers::invertPermutation function: element of input array is out of range (0, length-1) !");
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output.p<int>(elem, i);
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}
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}
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}
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}
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}
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